Skip to content
ZeroServer.tools

Images to PDF

Combine JPG, PNG, or WebP images into a single PDF. All processing happens in your browser.

Drop images or click to browse

JPG, PNG, WebP — converted client-side to PDF

Convert images to PDF without uploading

Drag images into the desired order, choose a page size and margin, then download a PDF — no upload required. Phone JPEGs with EXIF rotation tags (portrait shots) are automatically corrected. Use the ↻ button to manually rotate any image. Images are centered and scaled to fit within the margins. For compressing images before converting, try Image Compressor.

Built and maintained by Meet Shah · Last updated

What this tool is used for

  • Combining photographed receipts into one document for an expense claim.
  • Turning a set of scanned pages into a single shareable file.
  • Producing a PDF portfolio from a folder of images.
  • Creating a printable document from screenshots in a chosen page size.
  • Bundling a sequence of images so their order is fixed.

Frequently Asked Questions

How is page size decided?
Either the image dimensions become the page, or the image is fitted to a standard size like A4 or Letter. Fitting adds margins and may rotate landscape images; using image dimensions gives a PDF with pages of differing sizes.
Are the images recompressed?
JPEGs can be embedded directly with no re-encoding, since PDF supports the DCTDecode filter natively — so no quality is lost. PNGs must be converted, because PDF has no native PNG support, and that is where size can grow.
Why is the PDF larger than the images?
Usually because PNG or transparent images were converted to an uncompressed or lossless representation. Flattening transparency onto white and using JPEG for photographic pages is what keeps a scanned document reasonable.
How is DPI determined?
By pixel dimensions against the physical page size. A 1000px-wide image on an A4 page (8.27in) is about 121 DPI — below the 150 minimum for readable print and well below the 300 standard for quality output.
Will the text in my scans be searchable?
No. Images placed in a PDF stay images, so the result has no text layer. Searchability requires OCR, which is a separate step that recognises the characters and adds an invisible text layer behind the scan.
How should mixed orientations be handled?
Per page rather than globally — a PDF can hold portrait and landscape pages in one document. Forcing one orientation is what leaves landscape photos rotated or shrunk into a portrait frame.
Do the images need to be the same resolution?
No, but wildly different ones print inconsistently. Page size is derived from pixel dimensions and an assumed DPI, so a 4000px scan and a 800px screenshot become very different physical sizes unless scaled deliberately.

Common errors and gotchas

  • Ignoring image resolution, so a low-resolution photo looks fine on screen and prints badly.
  • Letting a portrait image be placed on a landscape page, which either crops or shrinks it.
  • Assuming the file order matches the order you want, which is often alphabetical rather than logical.
  • Producing an enormous file by embedding full-resolution photographs without any downscaling.
  • Expecting the text in a photographed page to be searchable, which needs OCR rather than a container change.

Related Converters tools

Private & free — this tool runs entirely in your browser.

IndieKitShip your Next.js startup in days.affiliate