JSON Formatter

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On the record

Audience

The site describes formatting as useful for reading and debugging minified API and log JSON, and for catching syntax errors before production.json-formatter.org · read 3 Oct 2026

Command-line input

The formatter can extract JSON bodies from pasted curl or wget commands using -d, --data, or --json.json-formatter.org · read 3 Oct 2026

File size

The site says there is no hard file-size limit and that practical capacity depends on the user's machine; documents in the tens of megabytes work in modern browsers.json-formatter.org · read 3 Oct 2026

Indentation

Formatting supports 2 or 3 or 4 spaces, or tabs.json-formatter.org · read 3 Oct 2026

JSONPath

A JSONPath filter extracts selected fields from a document.json-formatter.org · read 3 Oct 2026

Local processing

Formatting, validation, minification, and filtering run in the browser, and the site says JSON is not uploaded, stored, or logged.json-formatter.org · read 3 Oct 2026

Purpose

The browser tool formats, validates, and minifies JSON, and reports syntax errors with their line and column.json-formatter.org · read 3 Oct 2026

Repair

The repair feature handles common invalid JSON such as single quotes, unquoted keys, trailing commas, comments, and Python-style True/None literals.json-formatter.org · read 3 Oct 2026

Sharing

Share links pack the JSON into the link itself without using a server to store it.json-formatter.org · read 3 Oct 2026

Shortcuts

Ctrl+Enter (Cmd+Enter on Mac) formats input, Ctrl+F opens search, and Tab indents.json-formatter.org · read 3 Oct 2026

Standards

Validation supports RFC 8259, RFC 7159, RFC 4627, and ECMA-404.json-formatter.org · read 3 Oct 2026

Workflow features

The page lists dark mode, drag-and-drop upload, download, autosave, and Ctrl+F search.json-formatter.org · read 3 Oct 2026

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J jaqWebWindows+4 J JSONZenWebWindows+3 J JSONBuddyWindowsBrowser extension+1 DJ Dadroit JSON ViewerWebWindows+2 B BracketViewWebWindows+1 J jqWebWindows+3 G gojqWindowsMac+2 G gronWindowsMac+1

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