What our customers say about JSON Formatter
Pretty-prints large JSON instantly. The diff-friendly layout helps a lot.
Schema errors are easy to spot after formatting—great tool.
I use it daily for APIs. Fast and reliable in the browser.
Clean UI. The copy button is handy for quick sharing.
Handles huge payloads without freezing. Impressive.
Love that nothing is uploaded—great for sensitive data.
What makes this tool special?
Pretty Print & Minify
Beautify JSON with indentation or compress for production.
Validation & Error Hints
Detect malformed JSON and highlight issues.
Large File Handling
Smooth formatting for big payloads, device permitting.
Syntax Highlighting
Readable structure with colors for keys, values, and types.
Copy & Download
One click to copy or save the formatted JSON.
Privacy First
Runs entirely in your browser—no uploads.
Perfect for these situations
API Responses
Beautify and inspect payloads from REST/GraphQL.
Logs & Debugging
Quickly reformat JSON logs for readability.
Config Files
View and edit app configs with clear structure.
Data Samples
Share neatly formatted examples with teammates.
Documentation
Produce readable JSON snippets for guides.
Education
Teach JSON structure with highlighted, indented views.
Frequently Asked Questions
Is this JSON formatter free to use?+
Do I need to create an account?+
Do you validate JSON?+
Is my JSON sent to a server?+
Can I minify the JSON?+
How large of a file can I format?+
Format, validate, and beautify JSON data with syntax highlighting.