JSON tools
JSON Formatter & Validator
Format or minify JSON, sort keys, find syntax errors and download a clean UTF-8 file without uploading your data.
All data is processed locally in your browser. Nothing is uploaded or sent to analytics.
Most tools process locally in your browser. Background removal uploads selected images to the configured server processor and deletes the source after processing.
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How to use
- Paste JSON or choose a .json file.
- Choose indentation and optional key sorting, then select Format, Minify or Validate.
- Copy or download the result; invalid input includes a line and column when available.
Great for
- Cleaning API responses
- Checking configuration files
- Preparing readable JSON for documentation
Good to know
JSON must follow the standard syntax. Comments and trailing commas are not accepted.
Frequently asked questions
Is my JSON uploaded?
No. Parsing, formatting and downloads happen in your browser.
Can I format a large file?
Files up to 20 MB are accepted. Larger inputs may take longer on low-memory devices.
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