About this tool
JSON validator and formatter
Validate, format or minify JSON without executing the input code.
Enter content or choose a local file on the left, adjust the available settings, and run the tool. Results or previews appear on the right. Use the copy or download actions provided after processing.
Available settings:
Output mode (Default: pretty) — Options: Format, Minify
Built-in input example:
{"hello":"world","items":[1,2,3]}
Frequently asked questions
What does this tool do?
Validate, format or minify JSON without executing the input code.
How do I use this tool?
Enter content or choose a local file on the left, adjust the available settings, and run the tool. Results or previews appear on the right. Use the copy or download actions provided after processing.
Which settings can I change?
Output mode (Default: pretty) — Options: Format, Minify
What should I check before using it?
Use the input formats and settings supported by the page. Check your input if an error appears; processing again updates the right panel.
Where is my input sent?
Input is processed in the current browser and is not automatically uploaded by this tool. Copying requires browser permission; select and copy the result manually if needed.