Online JSON Beautifier & Validator

Use the DevToolsDesk JSON Beautifier to pretty-print, validate and minify any JSON payload. Paste raw JSON, fix errors and export a clean version in seconds.

The tool runs entirely in your browser, so your JSON is not sent to any server. It is safe to use with development and staging data.

Open JSON Beautifier

Typical use cases

• Inspecting REST or GraphQL API responses.
• Cleaning up JSON logs before sharing with teammates.
• Understanding nested objects and arrays quickly.

Related tools

• JSON Diff – compare two JSON structures.
• JSONPath Tester – query nested data.
• JSON Tutorials – learn how to use JSON in code.