Free Online Developer Tools

JSON Formatter

Format, validate, and beautify JSON payloads.

Text Diff / Compare

Side-by-side or unified line/character diff comparison tool.

XML Formatter

Beautify and indent XML strings.

Minifier Suite

Minify HTML, CSS, and JS by stripping comments and whitespace.

Markdown Converter

Convert Markdown to HTML with live preview.

CSS Formatter

Beautify and indent minified or messy CSS.

HTML Formatter

Beautify and indent raw HTML markup.

SQL Formatter

Format SQL queries with keyword casing and indentation.

YAML Formatter

Validate and normalize YAML indentation.

Credit Card Validator

Validate card numbers with the Luhn check and detect the brand.

Email Validator

Check whether an email address is well-formed.

IP Address Validator

Validate and classify IPv4 and IPv6 addresses.

IBAN Validator

Validate an IBAN with the ISO 7064 mod-97 checksum, and see its country and formatted form.

ISBN Validator

Validate ISBN-10 and ISBN-13 book numbers with their checksum digit.

TOML Formatter

Format and validate TOML files online. Paste your TOML to check for errors, normalise indentation, and view the parsed structure as JSON.

JSON Minifier

Minify JSON by removing all whitespace and comments. Shows original vs minified byte sizes and savings percentage. No upload needed.

JSON Schema Validator

Validate JSON data against a JSON Schema (Draft 7) — checks type, required fields, enum, min/max, and nested objects.

XML Validator

Validate XML syntax online — checks tag matching, attribute quotes, and well-formedness without a server.

YAML Validator

Validate and pretty-print YAML instantly in your browser. Detects syntax errors with line and column numbers.

HTML Validator

Validate HTML for unclosed tags, mismatched nesting, duplicate IDs, and missing attributes.

JavaScript Beautifier

Beautify and format JavaScript code with configurable indentation. Handles strings, template literals, and comments.

PHP Formatter

Format and indent PHP code in your browser. Handles braces, control structures, strings, and PHP tags — no server required.

IMEI Validator

Validate IMEI numbers using the Luhn algorithm. Shows TAC, serial number, and check digit breakdown for any 15-digit IMEI.

JSONL Formatter

Format, validate, and inspect JSON Lines (JSONL / NDJSON) files. Pretty-print each record, validate all lines, or extract a specific key.

CSS Validator

Validate CSS syntax: check balanced braces, declaration colons, and basic errors with line numbers.

URL Validator

Validate URLs and inspect their components: protocol, host, path, query parameters, and hash.

Nginx Config Validator

Validate nginx configuration files for syntax errors, unbalanced braces, and common misconfigurations.

CSV Validator

Validate CSV structure: column counts, types, headers, and empty cells.

Protocol Buffer Formatter

Format and indent .proto (Protocol Buffer) files for readability.

OpenAPI Validator

Validate OpenAPI 3.x and Swagger 2.0 YAML/JSON specifications for common errors.

Phone Number Validator

Validate and format international phone numbers. Detects country and formats in E.164, national, and international styles.

XML Sitemap Validator

Validate sitemap.xml files for correct structure, required fields, and common errors.

Docker Compose Validator

Validate Docker Compose YAML files (v2/v3). Check for syntax errors, required fields, version compatibility, and common configuration mistakes.

JSON Merge

Deep-merge two JSON objects. Choose between deep merge (nested objects merged recursively) or shallow merge (top-level keys only, right side wins).

HTML Compare

Compare two HTML documents with a source line diff plus a rendered side-by-side preview, entirely in your browser.

JavaScript Validator

Check JavaScript source for syntax errors instantly in your browser, with line and column numbers.

Array Sorter

Sort a list of values numerically, alphabetically, in reverse, or shuffled, with optional duplicate removal — instant, private, client-side.

CSV Data Masking & Anonymizer

Mask emails, phone numbers, and card numbers in CSV columns using regex. Anonymize sensitive data instantly, entirely in your browser.

HTML Table Sorter

Paste an HTML table and sort its rows by any column, numerically or alphabetically, ascending or descending — 100% client-side.

XML Minifier

Strip whitespace, indentation, and comments from XML, collapsing it to a compact single-line document while preserving CDATA content exactly.

XML Sorter

Sort XML sibling elements and attributes alphabetically and re-serialize the document, 100% client-side.

YAML Sorter

Sort YAML mapping keys alphabetically at every nesting level while preserving list order, entirely in your browser.

JSON to YAML

Convert JSON into clean, readable YAML instantly.

YAML to JSON

Convert YAML configuration into valid JSON.

JSON to CSV

Flatten a JSON array of objects into CSV rows.

CSV to JSON

Parse CSV with headers into a JSON array of objects.

JSON to XML

Convert JSON structures into nested XML markup.

HWB to HEX Converter

Convert an HWB color to HEX.

JSON to SQL

Turn a JSON array of objects into SQL INSERT statements.

CSV to XML

Convert CSV rows into structured XML records.

XML to CSV

Flatten repeated XML records into CSV rows.

INI to JSON

Parse INI config sections and keys into JSON.

JSON to INI

Serialize a JSON object into INI config format.

CSV to Markdown Table

Convert CSV data into a GitHub-style Markdown table.

CMYK to HSL Converter

Convert CMYK print ink percentages into HSL color notation.

XML to JSON

Convert XML markup into a structured JSON object.

Number to Words

Spell out numbers in English words.

CSV to SQL

Turn CSV rows into SQL INSERT statements.

Decimal to Binary Converter

Convert decimal (base 10) numbers to binary (base 2).

Binary to Decimal Converter

Convert binary (base 2) numbers to decimal (base 10).

Decimal to Hex Converter

Convert decimal (base 10) numbers to hexadecimal (base 16).

Hex to Decimal Converter

Convert hexadecimal (base 16) numbers to decimal (base 10).

CSV Cleaner

Trim whitespace, drop empty rows, and de-duplicate CSV data.

CSV to HTML Table Converter

Turn CSV data into a ready-to-paste HTML <table>.

Decimal to Octal Converter

Convert decimal (base 10) numbers to octal (base 8).

Octal to Decimal Converter

Convert octal (base 8) numbers to decimal (base 10).

Binary to Hex Converter

Convert binary (base 2) numbers to hexadecimal (base 16).

Hex to Binary Converter

Convert hexadecimal (base 16) numbers to binary (base 2).

CSV to TSV Converter

Convert comma-separated values to tab-separated values.

TSV to CSV Converter

Convert tab-separated values to comma-separated values.

Scientific Notation Converter

Convert numbers between decimal and scientific (E) notation.

JSON to Query String Converter

Turn a flat JSON object into a URL query string.

Query String to JSON Converter

Parse a URL query string into a JSON object.

Octal to Binary Converter

Convert octal (base 8) numbers to binary (base 2).

HTML to JSX Converter

Convert HTML to JSX — class to className, inline styles to objects, and self-closed tags.

JSON to Go Struct

Generate Go structs with JSON tags from a sample JSON object.

SVG to Data URI

Encode an SVG into a URL-encoded or base64 data URI for CSS or img src.

JSON to PHP Array

Convert JSON into a ready-to-paste PHP array using modern short-array syntax.

Seconds to Time Converter

Convert a number of seconds into HH:MM:SS and a human-readable duration.

Centimeters to Inches

Convert centimeters to inches instantly, with a feet-and-inches breakdown and a quick reference table.

Inches to Centimeters

Convert inches to centimeters instantly, with a quick reference table for common values.

Kilograms to Pounds

Convert kilograms to pounds (lb) instantly, with a quick reference table for common weights.

Pounds to Kilograms

Convert pounds (lb) to kilograms instantly, with a quick reference table for common weights.

Binary to Octal Converter

Convert binary (base 2) numbers to octal (base 8).

Hex to Octal Converter

Convert hexadecimal (base 16) numbers to octal (base 8).

Octal to Hex Converter

Convert octal (base 8) numbers to hexadecimal (base 16).

JSON to Rust Struct

Generate Rust structs with serde Serialize / Deserialize derives from a JSON sample.

HTML to Markdown Converter

Convert HTML markup into clean, readable Markdown without a server.

JPG to PNG Converter

Convert JPEG images to lossless PNG format instantly in your browser.

PNG to JPG Converter

Convert PNG images to JPEG with a quality slider to control file size.

Image to WebP Converter

Convert PNG, JPG, or GIF to modern WebP format with quality control — no upload.

SVG to PNG Converter

Render an SVG file to a PNG raster image at any size — entirely in your browser.

WebP to PNG Converter

Convert WebP images to lossless PNG format in your browser — no upload needed.

JPG to WebP Converter

Convert JPEG photos to WebP format for smaller web-optimized images.

PDF Merge

Combine multiple PDF files into one. Reorder files before merging — nothing is uploaded.

PDF Split

Extract specific pages or page ranges from a PDF. Runs entirely in your browser.

PDF Rotate

Rotate all or specific pages in a PDF by 90°, 180°, or 270°. Client-side — no upload.

PDF Page Remover

Select and delete specific pages from a PDF — click to mark, then download the trimmed file.

Images to PDF

Convert JPG, PNG, or WebP images into a PDF — choose page size, reorder images, download.

SQL to JSON

Convert SQL INSERT statements to a JSON array — column names become object keys.

Number Base Converter

Convert numbers between decimal, binary, hexadecimal, and octal. Shows grouped binary output.

JSON to CSV Converter

Convert a JSON array of objects to CSV. Auto-detects columns, escapes fields per RFC 4180.

YAML to TOML Converter

Convert YAML configuration files to TOML format. Handles nested objects, arrays, and scalars.

Markdown to HTML

Convert Markdown to HTML with live preview. Uses the marked parser — same one used by GitHub.

Feet to Meters Converter

Convert feet to meters instantly with a quick-reference table.

Meters to Feet Converter

Convert meters to feet and inches with a reference table.

Liters to Gallons Converter

Convert liters to US and imperial gallons with a table.

Gallons to Liters Converter

Convert US or imperial gallons to liters with a table.

Grams to Ounces Converter

Convert grams to ounces with a quick-reference table.

XML to YAML Converter

Convert XML documents to clean, indented YAML output.

TOML to JSON Converter

Parse TOML configuration files and convert them to JSON.

Word to Number Converter

Convert written numbers like 'forty-two' to numerals.

Energy Converter

Convert between joules, calories, kilowatt-hours, BTU, and more.

Pressure Converter

Convert between pascal, bar, PSI, atm, torr, and mmHg.

Volume Converter

Convert between milliliters, liters, cups, pints, quarts, gallons, and more.

Angle Converter

Convert between degrees, radians, gradians, and turns.

Power Converter

Convert between watts, kilowatts, horsepower, BTU/h, and more.

Text to Hex Converter

Convert plain text to hexadecimal byte values.

Hex to Text Converter

Convert hexadecimal byte values back to readable plain text.

MM to Inches Converter

Convert millimeters to inches instantly with a reference table for common sizes.

Inches to MM Converter

Convert inches to millimeters with fractional inch support and a reference table.

mL to fl oz Converter

Convert milliliters to US fluid ounces with a quick-reference table for common volumes.

fl oz to mL Converter

Convert US fluid ounces to milliliters with a quick-reference table for common measures.

TOML to YAML Converter

Convert TOML configuration files to YAML format online — instant, no signup.

Miles to Km Converter

Convert miles to kilometers instantly with a quick-reference table for common distances.

Km to Miles Converter

Convert kilometers to miles instantly with a quick-reference table for common distances.

Celsius to Fahrenheit Converter

Convert Celsius to Fahrenheit using F = (C × 9/5) + 32 with a quick-reference temperature table.

Fahrenheit to Celsius Converter

Convert Fahrenheit to Celsius using C = (F − 32) × 5/9 with a quick-reference temperature table.

Pixels to Inches Converter

Convert pixels to inches at any DPI/PPI. Select screen resolution and see exact physical size for design and print.

MPG to L/100km Converter

Convert fuel economy from miles per gallon (US or UK) to litres per 100 kilometres and back. Includes a quick-reference comparison table.

L/100km to MPG Converter

Convert fuel economy from litres per 100 kilometres to miles per gallon (US or UK). Includes a quick-reference comparison table.

Bandwidth Converter

Convert between network speed units — bps, Kbps, Mbps, Gbps, Tbps — and toggle between bits and bytes. Includes common speed reference table.

JSON to HTML Table

Convert a JSON array of objects into a formatted HTML table. Paste your JSON and get clean, copy-ready HTML with sortable headers and optional styling.

IP to Decimal Converter

Convert an IPv4 address to its 32-bit decimal integer and back. See dotted-quad, decimal, hex, and binary side by side.

Decimal to IP Converter

Convert a 32-bit decimal integer back to an IPv4 dotted-quad address. Also shows hex and binary representations instantly.

Time to Seconds Converter

Convert HH:MM:SS time notation to total seconds, and seconds back to a human-readable duration. Handles hours, minutes, and seconds with instant results.

YAML to XML Converter

Convert YAML documents to well-formed XML. Handles nested objects, arrays, and all scalar types with configurable root element name and indentation.

HTML to HAML Converter

Convert HTML markup to HAML template syntax. Translates tags to HAML shorthand, handles attributes and classes, and removes verbose closing tags.

HTML to Pug Converter

Convert HTML to Pug (formerly Jade) template syntax. Translates tags, attributes, classes, and IDs into Pug's clean indentation-based format.

Hex to RGBA Converter

Convert hex color codes to rgba() with an adjustable alpha channel.

Degrees to Radians Converter

Convert between degrees and radians with π notation support.

Number to Excel Column Converter

Convert between Excel column numbers and letters (A=1, Z=26, AA=27).

Affine Cipher

Encode and decode text using the Affine cipher — choose coprime a and b keys with live alphabet mapping.

Rail Fence Cipher

Encode and decode text using the Rail Fence (zigzag) cipher — with visual rail diagram.

Color Temperature Converter

Convert Kelvin color temperature (1000–12000 K) to RGB and hex — from warm candlelight to cool daylight.

Properties to JSON Converter

Convert Java .properties files to JSON and back — handles comments, nested keys, and colon separators.

HTML Table to JSON

Convert HTML table markup to JSON or CSV — auto-detects headers, coerces types, and previews data.

JSON to TOML Converter

Convert JSON to TOML — nested objects become [tables], arrays of objects become [[arrays of tables]].

CSV to YAML Converter

Convert a CSV file to YAML — each row becomes a YAML mapping object in a sequence.

JSON to Dart Class

Generate a Dart class from JSON — with typed fields, fromJson factory, and toJson method.

Two's Complement Converter

Convert decimal integers to two's complement binary and back — supports 8, 16, 32, and 64-bit widths.

CSV to JSON

Convert CSV data to JSON array — auto-detect headers, handle quoted fields, and download the result.

JSON to Python Dict

Convert JSON to a Python dictionary literal — maps JSON types to Python None, True/False, and native dict/list syntax.

JSON to Kotlin Data Class

Generate a Kotlin data class from a JSON sample — typed properties, nullable inference, and nested class support.

JSON to Swift Struct

Generate a Swift struct with Codable conformance from a JSON sample — typed properties and CodingKeys when needed.

Properties to YAML

Convert Java .properties files to YAML — handles nested dot-notation keys, comments, and multiline values.

SVG to JSX Converter

Convert raw SVG markup into a ready-to-paste React JSX/TSX component — camelCases attributes, fixes class/for, and self-closes tags.

HEIC to JPG / PNG

Convert HEIC or HEIF photos to JPG or PNG — batch convert multiple iPhone files.

AVIF to PNG / JPG

Convert AVIF images to PNG or JPG using native browser canvas decode — batch supported.

PNG to ICO Converter

Create a multi-size .ico favicon from any PNG — 16, 32, 48, and 256 px frames.

Image to Text (OCR)

Extract text from images and scanned documents with AI-powered OCR — runs entirely in your browser.

XSLT Transformer

Apply an XSLT stylesheet to XML data using your browser's built-in XSLTProcessor — no server required.

CSS to JS Object

Convert CSS properties to a JavaScript or React inline-style object with camelCase conversion and value quoting.

CSV Transpose

Flip CSV rows and columns — transpose a table so rows become columns and columns become rows.

IPv6 Converter

Expand, compress, and normalize IPv6 addresses. Converts between full, compressed, and mixed IPv4-mapped notation.

Gray Code Converter

Convert between binary and Gray code (reflected binary code), and convert decimal to Gray code and back.

Fixed Width to CSV

Convert fixed-width or columnar plain text to CSV. Specify column widths manually or let the tool auto-detect breaks.

JS Object to JSON

Convert a JavaScript object literal to valid JSON. Handles unquoted keys, single quotes, trailing commas, and comments.

Markdown to Slack

Convert Markdown formatting to Slack mrkdwn syntax. Bold, italic, strikethrough, links, code blocks, lists, and headings.

JSON Flatten / Unflatten

Flatten nested JSON objects to dot-notation keys or unflatten them back to nested structure. Useful for config management and flat stores.

HTML Table to Markdown

Convert HTML tables to Markdown pipe table format. Paste your HTML and get clean, GitHub-compatible Markdown instantly.

Decimal to Fraction

Convert decimal numbers to fractions in lowest terms. Shows proper fraction, mixed number, and percentage.

Fraction to Decimal

Convert fractions and mixed numbers to decimal. Accepts formats like 3/4, 1 3/4, and 22/7.

HAML to HTML

Convert HAML templates to HTML in your browser. Supports %tag, .class, #id, attribute hashes, nesting, and doctypes.

Pug to HTML

Convert Pug (formerly Jade) templates to HTML. Supports tags, .class, #id, attributes in parentheses, and text nodes.

Time Format Converter

Convert between 12-hour (AM/PM) and 24-hour time formats. Batch convert multiple times at once — one per line.

Markdown to Jira

Convert Markdown to Jira Wiki Markup. Handles headings, bold, italic, code blocks, links, tables, lists, and more.

Markdown to Confluence

Convert Markdown to Confluence Wiki Markup. Supports headings, code blocks, tables, macros, and Confluence-specific formatting.

PHP Serialize ↔ JSON

Convert PHP serialized strings to JSON and back. Handles strings, integers, floats, booleans, null, arrays, and objects.

YAML to CSV

Convert YAML arrays of objects to CSV spreadsheet format with auto-detected column headers.

BBCode to HTML

Convert BBCode forum markup to HTML. Supports bold, italic, links, images, quotes, and code blocks.

HTML to BBCode

Convert HTML to BBCode forum markup. Transforms tags to their BBCode equivalents for forum posts.

TOML to .env

Convert TOML configuration files to .env format. Nested tables become PREFIX_KEY=VALUE pairs.

Markdown to reStructuredText

Convert Markdown to reStructuredText (RST) for Sphinx documentation and Python projects.

CSV Row Filter

Filter CSV rows by column value conditions. Keep or remove rows matching your criteria.

CSV Column Extractor

Select, reorder, and extract specific columns from CSV data files. Remove unwanted columns.

.env to JSON

Convert .env files to JSON — parse KEY=VALUE pairs into a JSON object.

JSON to .env

Convert JSON objects to .env file format — flatten keys to KEY=VALUE pairs.

WebP to JPG

Convert WebP images to JPG format in your browser. Batch convert with quality control.

IP to Binary Converter

Convert IPv4 addresses to binary and hex notation, and decode subnet masks.

Markdown to MediaWiki

Convert Markdown syntax to MediaWiki markup for Wikipedia and wiki platforms.

IEEE 754 Converter

Convert decimal numbers to IEEE 754 binary (32-bit float and 64-bit double) representation.

TOML to INI Converter

Convert TOML configuration files to INI format. Handles sections, key-value pairs, and nested tables.

INI to Properties Converter

Convert INI configuration files to Java .properties format with dot-notation key flattening.

JSON to NDJSON Converter

Convert JSON arrays to NDJSON (Newline Delimited JSON) format and back. Each object becomes a single line for streaming and log processing.

TOML to Properties Converter

Convert TOML configuration files to Java .properties format. Flattens nested sections with dot notation and handles strings, numbers, and booleans.

YAML to .env Converter

Convert YAML configuration files to .env environment variable format. Flattens nested keys to UPPER_SNAKE_CASE and handles strings, numbers, booleans, and arrays.

HTML to JSX Converter

Convert standard HTML to React JSX syntax. Transforms class to className, for to htmlFor, inline styles to objects, and fixes self-closing tags.

Number to Words Converter

Convert numbers to English words. Supports integers and decimals up to quadrillions. Useful for writing checks, legal documents, and accessibility.

Seconds to Time Converter

Convert seconds to hours, minutes, and seconds (HH:MM:SS). Also shows days. Works in both directions: HH:MM:SS back to total seconds.

File Size Converter

Convert file sizes between bytes, KB, MB, GB, TB, and PB. Supports both decimal (SI) and binary (IEC) units: kilobytes vs kibibytes.

HTML to Markdown Converter

Convert HTML to Markdown syntax. Transforms headings, bold, italic, links, images, lists, blockquotes, and code blocks to their Markdown equivalents.

YAML to Properties Converter

Convert YAML to Java .properties format. Nested keys become dot-separated (parent.child=value). Handles arrays, strings, numbers, and booleans.

Geohash Encoder / Decoder

Encode latitude/longitude coordinates to a Geohash string, or decode a Geohash back to coordinates. Choose precision 1–12 for different grid cell sizes.

JSON to Kotlin Data Class

Convert a JSON object to Kotlin data class definitions. Generates idiomatic Kotlin with nullable types, nested classes, and proper naming conventions.

Base64 to Decimal Converter

Decode a Base64 string into its raw bytes and view them as a space-, comma-, or newline-separated decimal array, entirely in your browser.

Decimal to Base64 Converter

Encode a decimal byte array (0-255 per value) into a Base64 string, entirely in your browser.

CMYK to HSB Converter

Convert CMYK print color values to HSB / HSV (hue, saturation, brightness) instantly in your browser.

HSB to CMYK Converter

Convert HSB/HSV (hue, saturation, brightness) color values to CMYK print percentages, right in your browser.

HSB to HSL Converter

Convert HSB/HSV colors (hue, saturation, brightness) to HSL values. Enter hue, saturation, and brightness — get instant HSL output.

HSL to CMYK Converter

Convert HSL color values to CMYK print percentages instantly, with RGB shown as the intermediate step — all calculated locally in your browser.

HSL to HSB Converter

Convert HSL (Hue, Saturation, Lightness) color values to HSB/HSV (Hue, Saturation, Brightness) instantly with live sliders and a color swatch.

HEX to HWB Converter

Convert HEX color codes to the CSS HWB (Hue, Whiteness, Blackness) format instantly in your browser.

HEX to LAB Converter

Convert a HEX color code to CIE LAB (L*a*b*) values using the D65 illuminant, with live preview and CSS lab() output.

LAB to HEX Converter

Convert a CIE LAB color (D65 illuminant) to HEX and RGB instantly. Zero uploads, 100% private client-side processing.

HEX to LCH Converter

Convert HEX colors to the perceptually uniform CIE LCH (and Lab) color space with instant CSS-ready lch()/lab() output.

LCH to HEX Converter

Convert a CIE LCH color (Lightness, Chroma, Hue) to a HEX code instantly, with live RGB/hex preview and copyable CSS output.

OKLCH to HEX Converter

Convert OKLCH colors to HEX codes instantly and free, right in your browser — no uploads, no server.

OKLCH to HSL Converter

Convert OKLCH colors to HSL instantly in your browser, with live preview, HEX/RGB output, and shareable links.

OKLCH to RGB Converter

Convert an OKLCH color to RGB, with live preview and copyable HEX/RGB/CSS output, entirely in your browser.

RGB to OKLCH Converter

Convert an RGB color to the perceptually uniform OKLCH color space, with live preview and copyable CSS oklch() output.

HSL to OKLCH Converter

Convert an HSL color to the perceptually uniform OKLCH color space, with live preview and copyable CSS oklch() output.

HEX to RAL Converter

Find the nearest RAL Classic color to a HEX value using a bundled RAL palette table and Delta-E color distance.

RAL to HEX Converter

Look up the HEX and RGB value of a RAL Classic color code from a bundled RAL palette table.

INI to YAML Converter

Convert INI config files with sections and keys into structured YAML, entirely in your browser.

YAML to INI Converter

Convert YAML configuration to INI format, turning nested mappings into dotted [section.subsection] blocks, entirely in your browser.

JSON to Pydantic Converter

Convert a JSON sample into a Python Pydantic BaseModel class — infers types, nested models, lists, and Optional fields.

SQL to CSV Converter

Convert SQL INSERT statements into clean CSV rows instantly in your browser — no server, no upload.

HTML Table to CSV Converter

Convert an HTML table to CSV instantly in your browser — handles th/td headers, quoted values with commas, and multiple delimiters.

Hex to IP Converter

Convert an 8-digit hex string to a dotted-decimal IPv4 address, with instant decimal (uint32) and binary octet views.

IP to Hex Converter

Convert a dotted-decimal IPv4 address to an 8-digit hex string, or decode hex back to an IP, entirely in your browser.

CSV to Image Converter

Convert CSV data into a styled, shareable PNG table image entirely in your browser — no upload required.

ICO to JPG Converter

Extract the largest frame from a Windows .ico icon file and convert it to a JPG, entirely in your browser.

ICO to PNG Converter

Extract the largest embedded frame from a Windows .ico file and export it as a PNG, entirely in your browser.

ICO to WEBP Converter

Extract the largest frame from a Windows .ico icon file and convert it to a WEBP image, entirely in your browser.

SVG to JPG Converter

Convert an SVG file to a JPG image with a white background, at any scale — fast, free, and entirely in your browser.

SVG to WEBP Converter

Convert SVG files to WEBP images in your browser—adjust scale and quality, no upload required.

Base64 Encoder

Encode or decode Base64 strings.

URL Encoder

Safely encode or decode URL parameters.

Base Converter

Convert numbers between binary, octal, decimal, hex, and base 2-36.

ROT13 Encoder / Decoder

Apply the reversible ROT13 letter-substitution cipher.

HTML Entity Encoder / Decoder

Escape or unescape HTML entities like &amp; and &lt;.

Punycode Converter

Convert internationalized domains to and from Punycode.

Text to Morse Code

Translate text into Morse code dots and dashes.

Morse Code to Text

Decode Morse code dots and dashes back into text.

UTF-8 Encoder

Encode text into UTF-8 byte values (hex).

UTF-8 Decoder

Decode UTF-8 byte values (hex) back into text.

Text to ASCII

Convert text into ASCII / Unicode code points.

ASCII to Text

Convert ASCII / Unicode code points back into text.

Base32 Encoder / Decoder

Encode or decode RFC 4648 Base32 strings.

Base58 Encoder / Decoder

Encode or decode Base58 (Bitcoin alphabet) strings.

Roman Numeral Converter

Convert numbers to Roman numerals and back.

Unicode Escape Converter

Escape text to \uXXXX sequences and unescape them back.

Base64URL Encoder / Decoder

Encode or decode URL-safe Base64 (Base64URL).

Backslash Escape Converter

Escape and unescape backslash sequences in strings.

JSON Escape / Unescape

Escape text into a JSON string literal or unescape \n, \t and \uXXXX back to readable text.

Caesar Cipher Encoder / Decoder

Shift letters by any amount to encode or decode a Caesar cipher.

Vigenère Cipher Encoder / Decoder

Encrypt or decrypt text with a keyword using the Vigenère cipher.

Base64 Image Encoder

Convert any image to a Base64 data URI — for CSS backgrounds, HTML src, and email embeds.

Base64 to Image

Paste a Base64 string or data URI to preview and download the decoded image.

Morse Code Converter

Encode text to Morse code and decode Morse code back to text. Includes a quick reference chart.

Binary Text Converter

Convert text to 8-bit binary and decode binary back to readable text. Instant, browser-side.

ROT47 Cipher

Encode or decode text using the ROT47 cipher (printable ASCII rotation).

Atbash Cipher

Encode and decode text with the Atbash cipher — a simple substitution cipher that maps A↔Z, B↔Y, and so on. Works for both encryption and decryption.

Polybius Square Cipher

Encode and decode text using the classic Polybius square — a 5×5 grid cipher that converts each letter to a pair of coordinates.

Base85 / ASCII85 Encoder

Encode and decode text using Base85 (ASCII85) — used in PDF and PostScript.

UUEncoder / UUDecoder

Encode and decode text using UUencoding — the classic Unix-to-Unix file format.

Wingdings Translator

Translate text to and from Wingdings font symbols. Supports Wingdings 1, 2, and 3 character sets.

Gzip Compress / Decompress

Compress text with Gzip in your browser and decompress Gzip data back to text — 100% client-side using native APIs.

Quoted-Printable Encoder

Encode and decode Quoted-Printable (QP) text as defined in RFC 2045. Used in email headers and MIME body encoding.

XOR Cipher

Encrypt and decrypt text using XOR with a key string. Includes single-byte brute-force mode for cracking simple XOR ciphers.

Bacon's Cipher

Encode and decode text using Bacon's bilateral cipher — each letter maps to a 5-character sequence of A and B (or 0 and 1).

A1Z26 Cipher

Encode text to numbers (A=1, B=2, ..., Z=26) and decode numbers back to letters. Choose your separator character.

Playfair Cipher

Encrypt and decrypt text with the Playfair cipher — a 5×5 key square digraph substitution.

Base91 Encoder / Decoder

Encode and decode data using Base91 — a compact binary-to-text encoding more space-efficient than Base64 for arbitrary binary data.

Text to Octal

Convert text to octal (base-8) codes. Each character's Unicode code point is encoded in base 8, space-separated.

Octal to Text

Decode octal (base-8) codes back to text. Accepts space, comma, or newline-separated octal values.

ROT13 Cipher

Encode or decode text with ROT13. Each letter shifts 13 places; applying it twice restores the original.

Morse Code Translator

Translate text to Morse code and Morse code back to text. Supports letters, digits, and punctuation with audio playback indicators.

Base 36 Converter

Convert numbers between decimal and base 36 (0-9, a-z). Base 36 produces compact alphanumeric representations used in URL shorteners, IDs, and checksums.

Punycode Encoder / Decoder

Encode internationalized domain names (IDNs) to ASCII-compatible Punycode (xn--...) or decode Punycode back to Unicode. Handles full domains and individual labels.

Password Generator

Generate strong, random passwords locally.

Hash Generator

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes locally.

JWT Decoder

Decode JSON Web Tokens instantly and offline.

Bcrypt Generator

Generate and verify Bcrypt hashes with custom salt rounds.

MD5 Hash Generator

Generate an MD5 hash from any text.

SHA-1 Hash Generator

Generate a SHA-1 hash from any text.

SHA-256 Hash Generator

Generate a SHA-256 hash from any text.

SHA-512 Hash Generator

Generate a SHA-512 hash from any text.

HMAC Generator

Generate an HMAC signature with a secret key.

CRC32 Checksum Generator

Compute the CRC32 checksum of text.

SHA-384 Hash Generator

Generate a SHA-384 hash from any text.

JWT Encoder

Build and sign HS256 JSON Web Tokens with a secret.

Basic Auth Header Generator

Build an HTTP Basic Authorization header from credentials.

AES Encryption Tool

Encrypt and decrypt text with AES-GCM and a password.

Password Strength Checker

Estimate password strength, entropy, and crack time locally.

PBKDF2 Hash Generator

Derive a PBKDF2 key from a password and salt with SHA-256/384/512 — using the Web Crypto API.

htpasswd Generator

Generate an Apache/nginx .htpasswd line with a bcrypt-hashed password — entirely in your browser.

TOTP Generator

Generate time-based one-time passwords (TOTP / authenticator codes) from a Base32 secret — entirely in your browser.

File Hash Generator

Generate SHA-1, SHA-256, and SHA-512 hashes for any file. All processing runs in your browser.

Hash Identifier

Identify hash types by length and character set — detects MD5, SHA-1, SHA-256, bcrypt, RIPEMD, and 20+ more.

RSA Key Pair Generator

Generate RSA public and private key pairs in PEM format using your browser's Web Crypto API — keys never leave your device.

PEM to JWK Converter

Convert RSA PEM keys to JSON Web Key (JWK) format and back. Uses the Web Crypto API — no data sent to any server.

NTLM Hash Generator

Generate NTLM (NT LAN Manager) password hashes using MD4 with UTF-16LE encoding.

X.509 Certificate Decoder

Decode PEM certificates to inspect subject, issuer, SANs, validity dates, and key details.

JWT Secret Generator

Generate a cryptographically secure random secret for signing JSON Web Tokens via HMAC-SHA256, SHA-384, or SHA-512.

ECDSA Key Generator

Generate ECDSA key pairs (P-256, P-384, P-521) in PEM format using Web Crypto. Keys never leave your browser.

Ed25519 Key Generator

Generate Ed25519 signing key pairs in your browser using Web Crypto. Modern, fast, and secure for SSH and digital signatures.

AES Key Generator

Generate random AES encryption keys (128, 192, or 256-bit) in your browser. Output as hex, base64, or base64url.

Password Policy Tester

Test a password against a configurable policy. Set rules for length, uppercase, lowercase, digits, special characters, and more.

Bitcoin Address Validator

Validate Bitcoin addresses: P2PKH (1…), P2SH (3…), Bech32 native SegWit (bc1q…), and Bech32m Taproot (bc1p…). Checks format and checksum.

Ethereum Address Validator

Validate Ethereum addresses and check EIP-55 mixed-case checksum encoding. Shows the correct checksummed form for any valid address.

Password Entropy Calculator

Calculate the entropy and crack time of a password based on its character set and length. Visualize how character set diversity and length affect security.

SHA-224 Hash Generator

Generate SHA-224 hashes from any text using crypto-js — live as you type, entirely client-side.

SHA-3 Hash Generator

Generate SHA3-224, SHA3-256, SHA3-384, and SHA3-512 hashes from text instantly in your browser — real NIST FIPS 202 SHA-3, no upload.

RIPEMD-160 Hash Generator

Generate a RIPEMD-160 hash from any text or file, computed instantly and privately in your browser.

PHP Password Verifier

Verify a plaintext password against a PHP password_hash() bcrypt digest locally in your browser — no server, no data leaves your device.

UUID Generator

Generate secure v4 UUIDs.

QR Code Generator

Create customizable QR codes and export as SVG or PNG.

Lorem Ipsum

Generate placeholder paragraphs, sentences, or word lists.

Random Hex Generator

Generate cryptographically random hexadecimal strings.

Random Number String

Generate a random string of digits of any length.

Random String Generator

Generate random strings from a custom character set.

Random Color Generator

Generate random colors as HEX, RGB, and HSL.

MAC Address Generator

Generate random MAC addresses in several formats.

Nano ID Generator

Generate compact, URL-safe Nano IDs.

Credit Card Number Generator

Generate valid test credit card numbers by brand.

ULID Generator

Generate sortable, time-based ULIDs.

Random IP Generator

Generate random IPv4 and IPv6 addresses.

SVG Placeholder Generator

Generate a lightweight SVG placeholder image (any size, colors, and label) as markup or a data URI.

Random Quote Generator

Get a random quote from programming, design, motivation, or philosophy. Click for a new one.

Fake Data Generator

Generate realistic test data — names, emails, addresses, jobs — in JSON or CSV format.

Lorem Ipsum Generator

Generate placeholder text — words, sentences, or paragraphs. Starts with the classic Lorem Ipsum.

HTML Boilerplate Generator

Generate a full HTML5 boilerplate with customizable options.

Random Number Generator

Generate random integers in any range — bulk generation with optional sort and unique mode.

Random Name Generator

Generate realistic random first and last names for testing, mockups, and prototypes.

Passphrase Generator

Generate strong, memorable passphrases from a built-in wordlist. Choose word count, separator, capitalisation, and append a number for extra entropy.

API Key Generator

Generate random API keys in multiple formats — hex, Base64, alphanumeric, UUID-style. Choose length and quantity. All generated locally in your browser.

Random Date Generator

Generate random dates between two dates in multiple formats for testing.

Random Email Generator

Generate random fake email addresses for testing and development.

CUID Generator

Generate collision-resistant unique IDs (CUID) — sortable, URL-safe alphanumeric strings.

Initials Avatar Generator

Generate an SVG avatar from name initials — choose shape, size, and color scheme.

README Badge Generator

Generate shields.io-compatible badges for GitHub READMEs — pick style, label, message, color, and copy Markdown or HTML.

Data Visualization Generator

Turn CSV or JSON into a bar, line, or pie chart in your browser and download it as SVG — no upload, no sign-up.

Fake Tweet Generator

Create a realistic-looking Twitter/X post mockup — set username, handle, tweet text, likes, retweets, and download as PNG.

Chat Mockup Generator

Design iMessage-style chat bubble conversations and export as PNG — add sent and received messages, timestamps, and contact names.

Resume Builder

Build and download a professional PDF resume in your browser — ATS-safe, no upload, no account.

WiFi QR Code Generator

Generate a QR code for your WiFi network. Scan to connect instantly — supports WPA2, WPA3, WEP, and open networks.

Random Port Generator

Generate random network port numbers in any range: all ports, registered (1024–49151), or dynamic/private (49152–65535).

WordPress Salts Generator

Generate fresh WordPress authentication keys and salts as PHP constants. Uses the Web Crypto API for cryptographically secure random output.

Barcode Generator

Generate EAN-13, EAN-8, and UPC-A barcodes as SVG. Check digit auto-calculated.

BIP39 Mnemonic Generator

Generate BIP39 mnemonic seed phrases (12 or 24 words) for cryptocurrency wallets.

PIN Generator

Generate cryptographically secure random PIN codes for ATMs, locks, and app authentication. Choose 4, 6, 8, or 10 digits.

WiFi Password Generator

Generate strong random WiFi passwords compatible with WPA2/WPA3. Customize length and character sets.

Django Secret Key Generator

Generate a Django SECRET_KEY using the same character set as Django's startproject command — 50 cryptographically random characters.

Laravel App Key Generator

Generate a secure Laravel APP_KEY (base64: + 32 random bytes) ready to paste into your .env file.

Email Signature Generator

Build a professional HTML email signature with name, title, company, contact details, and social links — with live preview.

Fake Credit Card Generator

Generate Luhn-valid fake credit card numbers for testing. Visa, Mastercard, Amex, and Discover. Never valid for real payments.

SSH Config Generator

Generate ~/.ssh/config entries from a form. Configure Host alias, HostName, User, Port, IdentityFile, and more.

Dockerfile Generator

Build a Dockerfile from a form. Choose base image, working directory, ports, commands, and environment variables.

GitHub Actions Generator

Generate GitHub Actions workflow YAML from a form. Configure triggers, runner OS, Node/Python version, and build steps.

Lorem HTML Generator

Generate lorem ipsum HTML with headings, paragraphs, lists, and code blocks. Paste directly into designs or templates.

RSS Feed Generator

Generate valid RSS 2.0 XML feeds from your channel info and items. Download or copy the XML.

GitHub Profile README Generator

Generate a GitHub profile README.md with bio, skills, social links, and GitHub stats badges.

vCard Generator

Generate vCard (.vcf) contact files. Fill in contact details and download a shareable .vcf file.

.htpasswd Generator

Generate .htpasswd entries for Apache basic auth using SHA-1 or bcrypt.

Cookie Consent Banner Generator

Generate GDPR-compliant cookie consent banner HTML, CSS, and JavaScript for your website.

Social Share Buttons Generator

Generate HTML social sharing buttons for Twitter/X, Facebook, LinkedIn, Reddit, and more.

HTML Email Template Generator

Generate responsive HTML email templates with inline CSS. Choose from Newsletter, Transactional, Promotional, or Welcome email layouts.

Word Search Generator

Create printable word search puzzles. Enter up to 15 words, choose grid size and directions, and generate a puzzle with a hidden word answer key.

Privacy Policy Generator

Generate a simple privacy policy template for your website or app. Customize company name, website URL, email, data types collected, and services used.

Terms of Service Generator

Generate a terms of service / terms and conditions template for your website or app. Customize company name, jurisdiction, services, and key policies.

Business Name Generator

Generate creative business name ideas based on keywords and industry. Combine prefixes, suffixes, and compound words to find the perfect brand name.

Short UUID Generator

Generate short, URL-safe unique identifiers using base62 encoding of UUID v4. Produces compact 22-character IDs that are collision-resistant and safe to use in URLs.

Apache .htaccess Generator

Generate common Apache .htaccess rules: HTTPS redirect, www/non-www canonicalization, custom 404 pages, gzip compression, browser cache headers, and directory listing.

Random Day Generator

Generate a random day of the week or a random day-of-month number (1-31) using cryptographically secure randomness.

Random Emoji Generator

Generate random emoji from a bundled 188-emoji set, filterable by category, with adjustable quantity and duplicate control.

Random Height Generator

Generate a random human height in cm and ft/in from a realistic bell-curve distribution, entirely client-side.

Random Month Generator

Instantly generate one or more random months of the year, with month inclusion filters and a no-repeats mode.

Random Phone Number Generator

Generate fake phone numbers in US, UK, Canada, Australia, Germany, France, India, or Japan format for testing and mock data, entirely in your browser.

Random Weight Generator

Generate a random human weight within a realistic range, shown instantly in both kilograms and pounds.

Random Year Generator

Generate random years within a custom range, with optional no-repeat and sort-ascending modes and automatic leap year detection.

Random Zip Code Generator

Generate fake zip/postal codes in a chosen country format (US, UK, Canada, and more) for testing and mock data, 100% client-side.

Yes or No Wheel

Spin an animated Yes or No wheel for a random, unbiased decision — ask a question and get an instant answer.

Testimonial Generator

Create a styled customer testimonial card with avatar, name, star rating, and quote — download as PNG.

Case Converter

Convert between Sentence, Title, camelCase, snake_case, and more.

Word Counter

Count words, characters, and analyze keyword density.

Text to Binary

Convert text into its 8-bit binary representation.

Binary to Text

Decode 8-bit binary back into readable text.

Text Reverser

Reverse text by characters, words, or lines.

Remove Duplicate Lines

Delete repeated lines and keep your list unique.

Remove Empty Lines

Strip blank and whitespace-only lines from text.

Sort Lines Alphabetically

Sort lines A–Z or Z–A, case-sensitive or not.

Slugify URL Generator

Turn any title into a clean, URL-safe slug.

Find and Replace Text

Find and replace text, with optional regex and flags.

Remove Extra Spaces

Collapse repeated spaces and trim each line.

Remove Accents

Strip diacritics so é becomes e and ü becomes u.

Remove Punctuation

Delete punctuation marks and symbols from text.

Text Repeater

Repeat any text a chosen number of times.

Word Frequency Counter

Count how often each word appears, ranked.

Zalgo Text Generator

Add creepy combining marks to make glitchy Zalgo text.

Upside Down Text Generator

Flip text upside down with mirrored Unicode characters.

Small Text Generator

Make tiny superscript, subscript, and small-caps text.

Strikethrough Text Generator

Cross out text with strikethrough, slash, or underline marks.

Bold Text Generator

Generate Unicode bold and italic text for anywhere.

Wide Text Generator

Create full-width vaporwave aesthetic spaced-out text.

NATO Phonetic Alphabet

Spell text using the NATO phonetic alphabet.

Leetspeak Converter

Translate text into 1337 (leetspeak) and back.

Pig Latin Translator

Translate English text into Pig Latin.

Cursive Text Generator

Create fancy Unicode cursive (script) text.

Bubble Text Generator

Turn text into circled bubble letters.

Add Line Numbers

Prefix every line with a sequential line number.

Remove Line Breaks

Strip line breaks to join text into one block.

Remove HTML Tags

Strip HTML tags to extract plain text.

Extract Email Addresses

Pull every email address out of a block of text.

Extract URLs

Pull every URL or link out of a block of text.

Reverse Word Order

Reverse the order of words in each line of text.

Extract Numbers

Pull every number out of a block of text.

Remove Duplicate Words

Strip repeated words from text, keeping the first of each.

Word Wrap / Text Wrapper

Hard-wrap text to a fixed line width without breaking words.

Shuffle Lines

Randomly reorder the lines of your text.

Reverse List / Line Order

Flip the order of lines so the last becomes the first.

Lines to Comma-Separated List

Join lines into a single comma-separated list.

Comma-Separated to Lines

Split a comma-separated list into one item per line.

Remove Numbers

Strip every digit out of your text.

Text Truncator

Trim text to a set number of characters or words with an ellipsis.

Random Line Picker

Pick one or more random lines from your list.

Markdown to Plain Text

Strip Markdown formatting to get clean, readable plain text.

Tabs to Spaces Converter

Convert tabs to spaces or spaces to tabs with a custom tab width.

Palindrome Checker

Check whether a word, phrase, or sentence reads the same forwards and backwards.

Title Case Converter

Convert text to Title Case, capitalizing each major word while leaving small words like 'a', 'of', and 'the' lowercase.

Remove Line Numbers

Strip leading line numbers from pasted code or text — handles '1.', '1)', '1:' and bare-number styles.

Sponge Case Generator

Convert text to AlTeRnAtInG mOcKiNg CaSe — the classic SpongeBob meme format.

Letter Counter

Count the frequency of each letter in your text.

Anagram Checker

Check whether two words or phrases are anagrams of each other.

Prefix / Suffix Adder

Add a custom prefix and/or suffix to every line of text.

Duplicate Line Counter

Count how many times each line appears — sorted by frequency.

Image to ASCII Art

Convert any image to ASCII art — choose width and character density.

Text to Speech

Have your browser read text aloud using the Web Speech API — adjustable voice, speed, and pitch.

Word Scrambler

Scramble the middle letters of each word while keeping first and last letters intact.

Text Sorter

Sort lines alphabetically, by length, or reverse. Remove duplicates and empty lines in one click.

Text Replacer

Find and replace text with plain or regex patterns. Supports case-insensitive and replace-all modes.

Markdown TOC Generator

Generate a GitHub-style table of contents from Markdown headings. Anchors auto-derived from heading text.

HTML to Plain Text Converter

Convert HTML markup to clean, readable plain text.

ASCII Art Text Generator

Turn any text into ASCII art block letters and banners.

Number to Ordinal Converter

Convert numbers to ordinal form: 1st, 2nd, 3rd, and more.

Duplicate Line Remover

Remove duplicate lines from text, keeping only unique entries.

Character Frequency Analyzer

Count the frequency of each character or word in your text.

Superscript Text Generator

Convert text to Unicode superscript characters for use anywhere — no HTML needed.

Subscript Text Generator

Convert text to Unicode subscript characters for chemical formulas and math notation.

Braille Text Converter

Convert English text to Grade 1 Braille Unicode and back — bidirectional translation.

Slug Generator

Convert text to URL-friendly slugs — lowercase, hyphens, no special characters. Perfect for blog posts and URLs.

Whitespace Remover

Remove or normalize whitespace from text — trim edges, collapse multiple spaces, strip blank lines, or remove all whitespace.

Unicode Character Info

Look up any Unicode character or code point — name, block, category, HTML entity, CSS escape, UTF-8/16 bytes, and keyboard shortcut.

Sentence Case Converter

Convert text to sentence case — first letter of each sentence capitalised, rest in lowercase. Handles multiple paragraphs and preserves proper nouns option.

String Splitter

Split any string by a delimiter — comma, space, newline, or any custom separator. Optionally trim whitespace and filter empty parts. Export as lines or JSON array.

Text Padding Tool

Pad every line of text to a fixed width with any fill character. Left, right, and center alignment — useful for ASCII art, fixed-width output, and aligned code.

Remove Special Characters

Strip special characters, symbols, and punctuation from text with custom options.

Emoji Picker

Browse, search, and copy emoji by category. Click any emoji to copy it instantly.

Text Statistics

Detailed text analysis: words, sentences, paragraphs, avg lengths, syllables, Flesch score.

Character Map Explorer

Browse Unicode character blocks — code points, HTML entities, UTF-8 bytes, CSS escapes, and JS escapes.

Text to Emoji

Replace words in your text with relevant emojis — fun emoji substitution with 150+ word mappings.

Random Word Generator

Generate random English words by category — nouns, verbs, adjectives, or all mixed.

Phone Number Formatter

Format phone numbers to E.164, national, or international format — auto-detects country code.

Word Sorter

Sort words alphabetically, by length, or by frequency — ascending or descending, with optional duplicate removal.

Text to Unicode Codepoints

Convert text to Unicode code points (U+XXXX) and back — supports hex, decimal, and escape formats.

Plagiarism Checker

Check text originality by generating exact-match Google searches per sentence — no database, fully private.

Sentiment Analyzer

Detect positive, negative, or neutral sentiment in any text using in-browser AI — fully private.

Invisible Text Generator

Generate invisible zero-width characters (Hangul Filler, Zero-Width Space, ZWNJ, ZWJ) for usernames or messages.

Em Dash Remover

Replace em dashes, en dashes, smart quotes, curly apostrophes, and ellipsis with plain ASCII equivalents.

Fancy Text Generator

Transform your text into bold, italic, cursive, bubble, upside-down, small caps, and 10+ more Unicode font styles instantly.

Word Cloud Generator

Generate a word cloud from any text, words sized by frequency. Download as SVG.

Word to Clean HTML

Strip Microsoft Word and Google Docs formatting bloat from pasted HTML.

Zero-Width Character Detector

Detect and remove invisible zero-width Unicode characters from text — ZWSP, ZWNJ, ZWJ, BOM, soft hyphen, and more.

Line Ending Converter

Detect and convert line endings between CRLF (Windows), LF (Unix/Mac), and CR (old Mac). Paste text and choose your target format.

Unicode Normalizer

Normalize Unicode text to NFC, NFD, NFKC, or NFKD form. Fixes encoding inconsistencies and ensures consistent string comparison.

Text Similarity Checker

Compare two texts and measure similarity using Levenshtein distance, Jaccard coefficient, and longest-common-subsequence. Useful for plagiarism detection and diff analysis.

String Obfuscator

Obfuscate text by replacing Latin characters with visually identical Unicode lookalikes (homoglyphs). Defeats simple copy-paste and text search.

Duration Formatter

Convert seconds (or days/hours/minutes/seconds) into human-readable duration formats: verbose, compact, colon notation, and ISO 8601.

ASCII Diagram Generator

Wrap text in styled ASCII boxes. Choose from simple, double-line, or rounded border styles.

Text Cleaner

Normalize whitespace, strip HTML tags, fix quotes, and remove junk characters.

Text Summarizer

Extractive TF-based text summarizer — pick the most important sentences.

Text Censor Tool

Redact or censor sensitive words and phrases from text with custom replacement patterns.

Syllable Counter

Count syllables in English text. Shows total syllables, per-word breakdown, and average syllables per word.

Acronym Generator

Generate acronyms from phrases. Supports first-letter mode, skip-small-words mode, and acronym expansion.

Vowel & Consonant Counter

Count vowels, consonants, letters, numbers, and special characters in text with percentage breakdown.

Anagram Generator

Generate all unique anagrams of a word or short phrase. Rearranges letters to find every possible letter combination for words up to 8 characters.

Pangram Checker

Check if text is a pangram — contains all 26 letters of the English alphabet. See missing letters and famous pangram examples.

Markdown Table Formatter

Format and align messy Markdown tables. Automatically pads columns to equal widths and preserves left, right, and center alignment.

Unicode Character Search

Search Unicode characters by name, category, or code point. Browse emojis, symbols, arrows, math operators, and special characters. Click to copy.

Text to NATO Alphabet

Convert text to the NATO phonetic alphabet (Alpha, Bravo, Charlie...). Useful for spelling out words clearly over phone or radio communications.

Multi-Line to Single Line

Join multiple lines of text into a single line. Choose your separator: space, comma, pipe, semicolon, or custom. Optionally trim whitespace and skip blank lines.

Hashtag Extractor

Extract every #hashtag from pasted text, deduplicated and counted, with CSV export and copy support.

Old English Text Generator

Convert text to Old English / Blackletter style using real Unicode Fraktur characters — copy and paste anywhere.

Remove Lines Containing Text

Delete every line containing a substring or matching a regex, with case-insensitive and invert-match options.

Words per Page Calculator

Estimate how many pages your word count fills (or how many words per page) using font size, spacing, and font family presets. 100% private, client-side.

Wrap Each Line in Quotes

Wrap every line of pasted text in double quotes, single quotes, backticks, or a custom character, with an optional trailing comma.

Text Anonymizer & PII Scrubber

Redact emails, phone numbers, credit card numbers, and IP/MAC addresses from pasted text with configurable placeholder masks, entirely in your browser.

Text Chunker for RAG

Split long text into overlapping chunks by character count, word count, or sentence boundary, and export as a JSON array for RAG and embedding pipelines.

Text Obfuscator (Anti-Scraper)

Encode text or an email into reversible HTML entity codes, JS Unicode escapes, or ROT13 to hide it from scrapers while browsers and humans can still decode it.

RegExp Tester

Test regular expressions and inspect matches locally.

Regex Visualizer

Visual regex pattern diagram with live match highlighting and capture group annotations.

Subnet Calculator

Compute CIDR subnets, usable hosts, and network ranges.

Cron Parser

Translate cron syntax into plain English.

URL Parser

Break a URL into protocol, host, path, and query parts.

HTML Previewer

Paste HTML and see it rendered live in a safe, sandboxed preview.

HTTP Status Code Reference

Search and look up every HTTP status code and its meaning.

MIME Type Lookup

Find the MIME type for a file extension, or the extensions for a MIME type.

ASCII Table

Full ASCII table with decimal, hex, octal, and binary values for every character.

Chmod Calculator

Build Unix file permissions with checkboxes and read them as octal (755) and symbolic (rwxr-xr-x) notation.

Crontab Generator

Build a cron expression from fields and read it back in plain English.

User Agent Parser

Parse a User-Agent string into browser, operating system, and device — in your browser.

Case Style Converter

Convert identifiers between camelCase, snake_case, kebab-case, PascalCase, CONSTANT_CASE, and dot.case.

JSON Diff Checker

Compare two JSON objects and see exactly what was added, removed, or changed — a structural diff, not a text diff.

Common Ports Lookup

Search a reference of common TCP/UDP port numbers and the services that use them — HTTP, SSH, DNS, and more.

Markdown Table Generator

Build a Markdown table in an editable grid — add rows and columns, set column alignment — and copy the Markdown.

.gitignore Generator

Generate a .gitignore file by selecting your tech stack.

EXIF Viewer

View EXIF metadata (camera model, GPS, date, settings) embedded in JPEG photos.

EXIF Remover

Strip all EXIF metadata from JPEG images to protect your privacy — processed locally.

JSON Tree Viewer

Visualize JSON as a collapsible, expandable tree. Color-coded types, click to expand.

JSON Schema Generator

Generate a JSON Schema (Draft 2020-12) from an example JSON object automatically.

cURL to Fetch

Convert cURL commands to JavaScript fetch() or axios calls — headers, body, and method.

IP Subnet Calculator

Calculate network address, broadcast, host range, and subnet mask for any IPv4 CIDR range.

JSONPath Tester

Test JSONPath expressions against JSON data. Supports dot notation, wildcards, slices, and recursive descent.

HTML Entities Reference

Searchable reference for 65+ HTML character entities. Copy named, numeric, or raw character formats.

UUID Validator

Validate a UUID, detect its version and variant, and decode v1 timestamps. Instant, private.

Byte Converter

Convert between bytes, KB, MB, GB, TB, KiB, MiB, and GiB.

HTTP Headers Lookup

Look up common HTTP headers: definitions, examples, and types.

.env File Parser

Parse and inspect .env files — view keys, values, and detect issues.

SemVer Comparator

Compare semantic version strings and check range compatibility.

Bitwise Calculator

Compute bitwise AND, OR, XOR, NOT, left/right shift on integers.

SQL SELECT Builder

Build SELECT queries visually — choose columns, WHERE, ORDER BY, and LIMIT.

JSON to Java Class

Generate Java POJO classes with constructors, getters, setters, and toString from JSON.

Regex Escape Tool

Escape special characters in a string for safe use in a regular expression pattern.

Locale Number Formatter

Format numbers using Intl.NumberFormat — compare locales, currencies, and units.

JSON to TypeScript

Generate TypeScript interfaces from any JSON object — handles nested objects, arrays, nullable types, and optional fields.

CSS Minifier

Minify CSS by removing comments, whitespace, and redundant characters. Shows byte savings. No upload needed.

HTML Minifier

Minify HTML by removing comments, extra whitespace, and blank lines. Shows byte savings. No upload needed.

HTTP Header Generator

Generate HTTP security headers — CSP, HSTS, X-Frame-Options, CORS, and more — with Nginx and Apache config snippets.

JSON to Zod Schema

Generate a Zod runtime validation schema from any JSON object. Handles nested objects, arrays, nullable values, and optional fields instantly.

ANSI Color Codes Reference

Complete reference for ANSI terminal escape codes — 16 standard colors, 256-color palette, RGB true color, and text styles. Click any entry to copy the escape sequence.

Nginx Config Generator

Generate Nginx server blocks for static sites, PHP-FPM, and Node.js reverse proxies.

Docker Compose Generator

Generate docker-compose.yml files with services, ports, volumes, and env vars.

Package.json Generator

Generate npm package.json files with name, version, scripts, and metadata.

SQL JOIN Visualizer

Visualize SQL join types with Venn diagrams, syntax examples, and result previews.

XPath Tester

Test XPath expressions against XML — evaluate nodes, strings, numbers, and booleans with presets.

PWA Manifest Generator

Generate a complete Web App Manifest JSON for Progressive Web Apps — all icons, display modes, and colors.

IP Range Expander

Expand a CIDR block into every individual IP address — with network info and CSV/JSON export.

Markdown Frontmatter Parser

Extract and display YAML frontmatter from Markdown files — see each field's type and JSON output.

HTTP Methods Reference

Complete reference for all 9 HTTP methods — safe, idempotent, cacheable properties and status codes.

JavaScript Minifier

Minify JavaScript by removing comments and whitespace — shrink JS files for production use.

GraphQL Formatter

Format and beautify GraphQL queries, mutations, and schemas with proper indentation.

CSS Class Extractor

Extract all unique CSS class names from HTML — sorted alphabetically or by frequency.

JSON Size Analyzer

Analyze a JSON document by byte size — find the heaviest keys and arrays ranked by size.

Regex Cheat Sheet

Complete regular expression reference — anchors, quantifiers, groups, lookaheads, and flags with examples.

SVG Optimizer

Optimize SVG code client-side — remove comments, whitespace, and redundant attributes to shrink file size.

Log File Analyzer

Analyze Apache & Nginx access logs in your browser — top IPs, status codes, paths, methods, errors, and traffic, fully private.

AI Object Detector

Detect and label objects in images using AI in your browser — powered by DETR, no upload needed.

JSON to C# Class

Generate C# classes from a JSON object. Infers types, adds properties, and handles nested objects and arrays.

Docker Run to Compose

Convert a docker run command into a docker-compose.yml file. Parses ports, volumes, environment variables, and more.

JS Keycode Tester

Press any key to inspect its event.key, event.code, keyCode, charCode, and modifier states in real time.

Git Cheat Sheet

Quick reference for the most important Git commands, organized by workflow: setup, branch, merge, remote, and more.

Hex Dump Viewer

View binary files as a hex dump in xxd format — offset, hex bytes, and ASCII side-by-side. Upload a file or paste hex data.

CRC-16 Calculator

Calculate CRC-16 checksums for text or hex data. Supports CCITT, CCITT-FALSE, Modbus, XMODEM, and other common CRC-16 variants.

HTML Table Builder

Build HTML tables visually — add/remove rows and columns, edit cells, set alignment.

Git Commit Message Generator

Build Conventional Commits format messages with type, scope, description, body, and breaking change footer.

Glob Pattern Tester

Test glob patterns against file paths in your browser. Supports * ? ** wildcards and {a,b} alternations.

curl to wget

Convert curl commands to wget syntax. Supports headers, POST data, authentication, cookies, output files, and common flags.

Stopwatch

Free online stopwatch with lap timing. Start, stop, reset, and record laps — all in your browser with millisecond precision.

Countdown Timer

Free online countdown timer. Set hours, minutes, and seconds, then start. Choose from presets: 1 min, 5 min, 25 min (Pomodoro), 1 hour.

curl to PowerShell

Convert curl commands to PowerShell Invoke-WebRequest syntax. Supports headers, POST data, authentication, and common curl flags.

Viewport Size Tester

Check your browser's viewport size, screen resolution, device pixel ratio, and orientation in real time. Updates as you resize.

curl to Python

Convert curl commands to Python requests code. Supports headers, POST data, authentication, cookies, and common curl flags.

curl to PHP

Convert curl commands to PHP cURL code. Supports headers, POST data, authentication, cookies, and common curl flags.

Brainfuck Interpreter

Run Brainfuck programs in your browser. Supports all 8 commands with a 30,000-cell tape, optional input, and step limit for safety.

curl to Ruby

Convert curl commands to Ruby Net::HTTP code. Supports headers, POST data, authentication, cookies, and common curl flags.

JSON to GraphQL Schema

Generate a GraphQL SDL schema from a JSON sample. Infers types (Int, Float, String, Boolean, nested types, arrays) automatically.

HTML Form Builder

Build HTML forms visually. Add fields (text, email, number, checkbox, select, textarea, and more), set attributes, and copy the generated HTML.

HTTP Header Parser

Parse and inspect raw HTTP request or response headers. Shows each header with its value and an explanation of common headers.

Date Formatter

Format a date in dozens of common patterns at once: ISO 8601, RFC 2822, Unix timestamp, US/EU date, long-form, and more.

curl to Java

Convert curl commands to Java OkHttp code. Supports headers, POST data, auth, and common flags.

curl to Go

Convert curl commands to Go net/http code. Supports headers, POST data, auth, and common flags.

HTTP Response Builder

Build mock HTTP responses with custom status, headers, and body for API testing and documentation.

Changelog Generator

Generate Keep-a-Changelog Markdown from version, date, and Added/Changed/Fixed entries.

curl to Node.js

Convert curl commands to Node.js code: Fetch API, Axios, or the built-in http/https module.

Apache Config Generator

Generate Apache VirtualHost configs for HTTP/HTTPS sites with PHP, SSL, and redirect options.

SQL Table Generator

Generate CREATE TABLE SQL statements. Design columns with types, constraints, and keys visually.

HAR File Parser

Parse HTTP Archive (HAR) files to inspect network requests, responses, and timings from DevTools.

Template Literal Engine

Fill {{variable}} placeholders in templates with live preview.

curl to Rust

Convert curl commands to Rust code using the reqwest crate.

curl to C#

Convert curl commands to C# HttpClient code for .NET 6+.

tsconfig.json Generator

Generate tsconfig.json files with presets for Next.js, React, Node.js, and strict TypeScript.

Email Header Analyzer

Parse and analyze raw email headers — decode routing, security checks, and metadata.

Cache-Control Builder

Build HTTP Cache-Control header directives interactively with live preview.

SQL INSERT Generator

Generate SQL INSERT statements from CSV or JSON data for any SQL dialect.

JSON Patch Generator

Generate RFC 6902 JSON Patch operations by comparing two JSON documents.

Tailwind Class Sorter

Sort Tailwind CSS class strings in the recommended Prettier plugin order.

curl to Kotlin

Convert curl commands to Kotlin OkHttp code. Supports headers, POST data, auth, and common flags.

curl to Dart

Convert curl commands to Dart http package code for Flutter and Dart projects.

ESLint Config Generator

Generate a custom .eslintrc.json configuration file by choosing extends, environments, and rules.

HTTP Request Builder

Build and preview raw HTTP requests — method, URL, headers, and body — then export as curl.

curl to Swift

Convert curl commands to Swift URLSession and URLRequest code. Supports GET, POST, PUT, DELETE with headers, request body, and authentication.

curl to Elixir

Convert curl commands to Elixir HTTPoison HTTP client code. Supports headers, request body, authentication, and all common HTTP methods.

Makefile Generator

Generate a Makefile for C, C++, Python, Node.js, or Go projects with common targets: build, test, clean, run, and install.

.gitconfig Generator

Generate a .gitconfig file with user settings, core preferences, aliases, and tool configuration. Copy to your home directory.

cURL to Axios Converter

Convert cURL commands to Axios.js JavaScript code. Supports headers, request body, auth, cookies, and all common cURL flags.

Sort JSON Keys

Sort JSON object keys alphabetically (deep sort). Recursively sorts all nested objects for consistent, readable output. Useful for diffing and normalizing JSON.

HTTP Cookie Parser

Parse HTTP Cookie and Set-Cookie headers. Extracts name, value, domain, path, expiry, HttpOnly, Secure, and SameSite attributes from any cookie string.

Markdown Code Block Extractor

Extract all code blocks from Markdown text. Shows each block with its language label, line count, and a copy button. Great for pulling code from documentation.

CSP Header Generator