Everything you need to work with JSON — format, beautify, minify, and validate. All tools run locally in your browser. No data ever leaves your device.
Paste any raw or unformatted JSON string and get a properly indented, human-readable output instantly. Uses 2-space indentation and preserves all data types including nested objects and arrays.
Takes compact or messy-whitespace JSON and outputs it with consistent 2-space indentation for easy reading.
Perfect for reading API responses, debugging config files, or sharing JSON with teammates in a readable form.
All processing happens in your browser. Nothing is uploaded to any server.
Turn minified or compressed JSON into a beautifully structured view. Choose your preferred indent size — 2 spaces, 4 spaces, or tabs — and copy or download the result instantly.
2 spaces is the most common convention. 4 spaces suits wider code styles. Tabs work best in editors configured for tab indentation.
Handles arbitrarily deep nesting — objects inside arrays inside objects — all formatted correctly.
Paste large API payloads. The tool handles them in milliseconds since everything runs client-side.
Strip all unnecessary whitespace and newlines to produce the smallest possible valid JSON string. Ideal for reducing payload size in APIs, HTTP requests, or storage systems where every byte counts.
Minification typically removes 15–40% of file size depending on original indentation level.
REST API responses, localStorage values, config files embedded in source code, or any JSON shipped over the wire.
Only whitespace is removed. All keys, values, types, and ordering are preserved exactly.
Check whether your JSON is syntactically valid according to RFC 8259. Get clear error messages with the exact position of any syntax mistake so you can fix it fast.
Trailing commas, single quotes, unquoted keys, missing colons — the validator catches them all.
The error message includes the position of the first syntax error, making it easy to locate the problem.
Validates against RFC 8259. Comments are not valid JSON and will be flagged.
They do the same core thing — both add indentation to make JSON readable. Our Beautifier also lets you choose indent size (2 spaces, 4 spaces, or tabs).
No — the validator tells you whether JSON is valid and where the error is. Fix the syntax manually then use the Beautifier to re-structure it.
Yes. All four tools run entirely in your browser. No data is ever sent to our servers.
Tips, fixes, and deep-dives for developers working with JSON.