JSON Diff

Comparing JSON with an ordinary text diff is frustrating: reformat a file or reorder its keys and the diff lights up red even though nothing actually changed. This tool compares JSON by meaning instead. It parses both documents and walks their structure, so key order and whitespace are ignored and you see only genuine differences — values that were added, removed, or changed. Every difference is reported with its exact path, such as settings.theme or features[2], and colour-coded so additions, removals, and changes are instantly distinguishable. It updates live as you edit either side, making it ideal for spotting what changed between two API responses, two config versions, or a snapshot before and after an operation.

Developers reach for a JSON diff constantly: confirming what a deployment changed in a config, diffing an API response against an expected fixture in a failing test, reviewing data migrations, or understanding what a webhook actually modified. Because this diff is structure-aware and recurses to any depth, it pinpoints deep changes that a line-based tool would bury in noise. Each entry shows the old and new value side by side, so you can see not just where something changed but exactly how. Everything runs locally in your browser for speed and privacy — paste two JSON documents and get a clean, accurate difference in an instant.