Developer Tools
JSON Formatter
Frequently asked questions
- Is my JSON data sent to a server?
- No. This JSON formatter runs entirely in your browser. Your data never leaves your device unless you choose to export or share it.
- How do I format JSON online?
- Paste your JSON into the editor and click Format, or use the keyboard shortcut ⌘⇧F. The tool prettifies with readable indentation instantly.
- Can this tool validate JSON?
- Yes. Validation runs live as you type. Invalid JSON shows the error message with line and column numbers.
- Can I minify JSON?
- Yes. Click Minify or press ⌘⇧M to compress JSON into a single line without spaces.
- Can I upload a JSON file?
- Yes. Drag and drop a .json file or click the upload zone. Files up to 5MB are supported in the browser.
- Does it work on mobile?
- Yes. The interface is responsive and works on modern mobile browsers with paste and touch-friendly controls.
Related tools
JSON Validator
Validate JSON online with line-level syntax errors. Free, instant, and private — runs entirely in your browser.
Developer ToolsBrowser
JSON Minifier
Minify and compress JSON to a single line in your browser. Free, fast, and private.
Developer ToolsBrowser
JSON to YAML
Convert JSON to YAML online in your browser. Free, fast, and private — no server upload.
Developer ToolsBrowser
YAML to JSON
Convert YAML configs to formatted JSON in your browser. Free, private, and instant.
Developer ToolsBrowser