JSON Formatter — Validate, Format, and Minify JSON
Paste JSON to validate, pretty-print, minify, and copy clean output instantly.
Your files are processed locally in your browser. Nothing is uploaded or stored.
Features
Key features of JSON Formatter
Validate pasted JSON against standard JSON syntax.
Format JSON with readable indentation.
Minify JSON for compact output.
Show parse errors when input is invalid.
Copy formatted or minified output quickly.
Benefits
Why use this tool
Debug API responses and config files faster.
Make dense JSON readable before sharing.
Keep data snippets local in the browser.
Use cases
Common ways to use JSON Formatter
Format REST or GraphQL responses.
Validate JSON configuration before deployment.
Minify payloads for examples or tests.
Process
How to use JSON Formatter
Paste JSON into the editor.
Format, minify, or validate it.
Copy the cleaned result or fix readable errors.
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Related guides
Guides for this tool
How to Format and Validate JSON Online
Learn how to format, validate, and minify JSON using a free browser-based tool. Get readable indentation and clear error messages instantly.
FAQ
Frequently Asked Questions
Is pasted JSON sent to a server?
No. JSON parsing and formatting happen inside your browser.
Can this minify JSON?
Yes. Use the minify action to remove whitespace from valid JSON.
Does it support invalid JSON comments?
No. It validates standard JSON, so comments and trailing commas are reported as errors.
Is this tool free to use?
Yes. MultiTool Panda tools are free and do not require sign-up.
Does this tool work on mobile?
Yes. The interface is responsive and works in modern mobile browsers.
Do I need to install software?
No. The tool runs directly in your browser.