JSON Formatter – Pretty‑Print and Validate JSON
Format and validate JSON data. Make your JSON human‑readable.
About this tool
Format and validate JSON data quickly with our free JSON formatter. If you're a developer working with APIs, configuration files, or data exchange, you know how messy raw JSON can be. Paste your JSON into the input area and click 'Format' to see it beautifully indented and easy to read. The tool also validates your JSON – if there's a syntax error, it tells you exactly where. You can also use the 'Validate Only' button to check correctness without formatting. All processing is done in your browser; no data is sent to a server. This tool is essential for debugging, learning JSON structure, or preparing data for sharing. Clean, fast, and free – try it now.
Frequently Asked Questions
Does it support JSON with comments?
Standard JSON does not allow comments, so our tool will flag them as errors. For JSON5 or other variants, we recommend using a different tool.
Can I minify JSON?
Yes, if you copy the formatted output and remove whitespace manually, or we can add a minify button in the future.
Is my JSON data stored on your server?
No. All processing is client-side. Your JSON never leaves your browser.