JSON formatter & validator
Format, validate, or minify JSON and locate syntax errors.
0 B / 5.00 MiB
0 B / 5.00 MiB
What is JSON formatter & validator?
The JSON formatter turns compact or inconsistently indented data into a readable structure while validating strict JSON syntax. It does not silently repair invalid input, which helps protect the meaning of technical data.
How to use it
- Paste JSON or load the example.
- Choose indentation, then format, validate, or minify.
- Review, copy, or download the result.
Capabilities
- 2 spaces, 4 spaces, or tabs
- Error position with line and column
- Copy and download
Limits
- 5 MB maximum
- Strict JSON only
- No automatic repair
Frequently asked questions
Is JSON content uploaded to the server?
No. Inputs, files, and results stay in this browser. ByteCoding receives only content-free operational events.
Is the result saved automatically?
No. Results exist only on the current page until you explicitly copy or download them.
Data & encoding