ZeroServer.tools

HTML Table to JSON

Convert HTML table markup to JSON or CSV — handles thead, th, colspan headers, and type coercion.

First row is headerAuto-coerce numbers/booleans/null

HTML input

JSON output · 3 rows

[
  {
    "Name": "Alice Chen",
    "Role": "Frontend Engineer",
    "Country": "Canada",
    "Active": true
  },
  {
    "Name": "Bob Müller",
    "Role": "Backend Engineer",
    "Country": "Germany",
    "Active": false
  },
  {
    "Name": "Carlos Rivera",
    "Role": "DevOps",
    "Country": "Mexico",
    "Active": true
  }
]

Preview

Name	Role	Country	Active
Alice Chen	Frontend Engineer	Canada	true
Bob Müller	Backend Engineer	Germany	false
Carlos Rivera	DevOps	Mexico	true

How HTML table parsing works

The parser locates the first <table> element using a regex tokenizer — no DOM required. It extracts <tr> rows, then pulls cell content from<th> or <td>tags, stripping inner HTML and decoding common HTML entities. With "First row is header" enabled, column names come from the first row; otherwise generic column_N keys are used.

Type coercion converts numeric strings to numbers, "true"/"false" to booleans, and empty cells to null. For the reverse conversion see JSON to Table. To parse CSV see CSV to JSON.

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