JSON Formatter and Validator
Paste JSON, format it, and validate syntax
JSON Minify
Minify JSON by removing unnecessary whitespace
0 chars
0 chars
JSON Compare
Compare differences between two JSON documents
JSON β YAML β XML Convert
Convert between JSON, YAML, and XML
What is JSON Toolbox?
A private JSON toolbox for formatting, validating, minifying, comparing, and converting JSON. The tool works in the browser and does not upload your data.
Key Features
- Format and beautify JSON
- Validate JSON syntax
- Minify JSON to reduce size
- Compare two JSON documents
- Convert JSON to YAML and XML
- Convert YAML or XML back to JSON
Common Use Cases
- Debug API responses
- Clean up configuration files
- Compare two JSON payloads
- Convert data between JSON, YAML, and XML
Frequently Asked Questions
Is the JSON formatter free?
Yes. JSON Toolbox is free to use and does not require an account.
Does my JSON get uploaded?
No. Formatting, validation, comparison, and conversion happen locally in your browser.
Which conversions are supported?
The tool supports JSON formatting, minifying, comparing, JSON to YAML, YAML to JSON, JSON to XML, and XML to JSON.
How large can a JSON file be?
The practical limit depends on browser memory. For a smooth experience, files below about 50 MB are recommended.