JSON Formatter
Format, validate and minify JSON instantly — paste in, get clean output, copy with one click.
About JSON Formatter
A powerful, client-side JSON formatter and validator. Clean up messy JSON strings, minify large payloads, and validate your data structure instantly. Built for developers who need a reliable, private tool that doesn't send sensitive API payloads to a remote server.
How to use JSON Formatter
- 1
Paste your raw JSON text into the Input panel.
- 2
Select your preferred indentation level (2 spaces, 4 spaces, or tabs).
- 3
Click 'Format' to beautify the JSON, or 'Minify' to compress it into a single line.
- 4
If your JSON is invalid, a detailed error message will point out the issue.
- 5
Click 'Copy' or the download icon to grab your formatted output.
Frequently Asked Questions
Is my JSON data sent to a server?
No. This tool uses your browser's native JSON engine to parse and format the data locally. Your data remains completely private.
Can it validate JSON?
Yes. When you click format, the tool attempts to parse the JSON. If there are syntax errors, it will display a descriptive error message.