JSON formatter
Format and minify JSON privately, directly in your browser.
1. Add your files
Choose a file from your device or drag it here.
Choose files
or drag and drop them here
Your files stay on this device.
Output will appear here.
Local processing. Input is limited to 5 MB to keep the editor responsive.
How to use JSON formatter
Validate, format, or minify JSON text and local JSON files. Select a file, adjust the available options, then download your result. Processing happens locally in this browser.
Supported formats
JSON text and files up to the tool's 5 MB input limit.
Frequently asked questions
Is JSON sent to a server?
No. Formatting and validation happen locally.
What is the input limit?
The editor limits input to 5 MB to remain responsive.