Writer & Dev
JSON Formatter
Paste JSON to pretty-print, minify, or validate it. Invalid JSON shows a clear error with the line number.
Runs in your browser — your text is never uploaded or stored.
✓ Valid JSON
Output
Advertisement
FAQ
Does it validate JSON?
Yes — invalid JSON returns a specific parse error and the line number.
Can I minify JSON too?
Yes, toggle between pretty-print (2 spaces) and minified output.
Is my data uploaded?
No. Formatting happens locally with `JSON.parse` in your browser.
Related tools
Base64 Encode/Decode
Encode text to Base64 or decode Base64 back to text. UTF-8 safe and runs entirely in your browser.
Text Diff
Compare two blocks of text and see additions, deletions, and unchanged content highlighted line by line.
Find and Replace
Find and replace text with match-case, whole-word, and replace-all options. Runs in your browser.
Extract URLs
Pull every URL out of any pasted text into a clean, deduplicated list. Runs privately in your browser.