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JSON Formatter

Input—per 1M tokens
Output—per 1M tokens
Context—tokens
WeightsClosed

About

JSON Formatter is ranked #6 of 29 in JSON tools on Inferse. It runs on Web. There is a free plan.

Compared on JSON tools

Free plan
Yesjson-formatter.org
Schema validation
Yesjson-formatter.org
JSONPath querying
Yesjson-formatter.org
JSON diff and compare
Yesjson-formatter.org
Available platforms
webjson-formatter.org

Facts

Purpose
The browser tool formats, validates, and minifies JSON, and reports syntax errors with their line and column.json-formatter.org · 3 Oct 2026
Indentation
Formatting supports 2 or 3 or 4 spaces, or tabs.json-formatter.org · 3 Oct 2026
Standards
Validation supports RFC 8259, RFC 7159, RFC 4627, and ECMA-404.json-formatter.org · 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 · 3 Oct 2026
JSONPath
A JSONPath filter extracts selected fields from a document.json-formatter.org · 3 Oct 2026
Sharing
Share links pack the JSON into the link itself without using a server to store it.json-formatter.org · 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 · 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 · 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 · 3 Oct 2026
Workflow features
The page lists dark mode, drag-and-drop upload, download, autosave, and Ctrl+F search.json-formatter.org · 3 Oct 2026
Shortcuts
Ctrl+Enter (Cmd+Enter on Mac) formats input, Ctrl+F opens search, and Tab indents.json-formatter.org · 3 Oct 2026
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 · 3 Oct 2026

Best JSON Formatter alternatives

See all 12
7.3 jsonfmt.dev Free free plan, no paid price published Free plan 7.3 JSONZen Free free plan, no paid price published Free plan 6.0 jq Free free plan, no paid price published Free plan 5.9 BracketView $0.19/mo first paid tier Free plan 5.9 Dadroit JSON Viewer $8.17/mo first paid tier Free plan 5.8 JSONLint See plans price on the maker's page

Where it ranks on Inferse

Sources