What is the JSON Diff?
Compare two JSON documents line by line. The JSON Diff is a free online tool that works instantly in your browser — no installation, no signup and nothing to upload. It sits alongside other JSON & Data tools on DevNibble such as JSON Formatter, JSON Validator, JSON Minifier.
How to use the JSON Diff
- Paste or type your input.
- The result appears instantly.
- Copy or download it.
Features
- Runs 100% in your browser — your data is never uploaded or stored.
- Free forever, with no account, no ads and no tracking.
- Copy or download your result in one click.
- Fast and responsive on desktop, tablet and mobile.
Frequently asked questions
How does the JSON diff work?
It normalises both documents and compares them line by line, highlighting added and removed lines.
Is my data private?
Yes, the comparison happens entirely in your browser.