Online JSON tool
JSON Formatter helps developers beautify messy payloads, minify for transport, validate syntax, and escape or unescape encoded strings — all privately in the browser. Paste JSON above to get started in seconds.
Built for everyday API debugging, log inspection, and quick JSON cleanup without installing an editor extension.
Turn minified JSON into readable, indented output with 2, 3, 4 spaces or tabs.
Compress JSON into a single line for APIs, logs, and storage without changing values.
Catch syntax errors instantly with line and column hints so you can fix bad JSON fast.
Encode JSON with escaped quotes and backslashes for embedding in strings, logs, or other payloads.
Decode escaped JSON strings (backslash-quoted objects) back into normal readable JSON.
Explore nested objects and arrays in a collapsible tree after formatting.
Compare two JSON documents and highlight added, removed, and changed fields by path.
Validate JSON against a JSON Schema in the output panel and see path-level rule failures.
Name and store drafts in your browser with localStorage — nothing is uploaded.
When you are reading API responses, webhook bodies, or config files, JSON often arrives minified or escaped. A dedicated formatter makes structure obvious, surfaces invalid tokens early, and keeps sensitive payloads on your machine.
This tool supports common workflows: pretty-print with configurable indentation, minify for compact payloads, sort object keys, search inside large documents, and reload named drafts from local storage.