JSON Formatter
Format, validate, and minify JSON online. Pretty-print with syntax highlighting and tree view, sort keys, and fix broken JSON. Free — no upload, no signup.
The JSON Formatter validates and pretty-prints JSON with syntax highlighting and an interactive tree view. Paste any JSON to instantly spot syntax errors, sort keys alphabetically, or collapse deeply nested structures. Switch to minify mode to compress JSON for APIs or storage. Works entirely in your browser — paste sensitive config files, API responses, or auth tokens without them ever leaving your device.
Frequently Asked Questions
- Can I format large JSON files?
- Yes, the formatter handles large JSON files directly in your browser with no file size limit imposed by a server.
- Can I validate against a JSON Schema?
- The JSON Formatter validates basic JSON syntax. For full JSON Schema validation against a schema document, use the JSON Schema Validator tool.
- Is this tool free to use?
- Yes, all tools on Here Be Tools are completely free with no signup or account required.
- Is my data sent to a server?
- No. All processing happens locally in your browser. No data you enter is ever transmitted to any server.