JSON Compare — Diff Two JSON Documents

This JSON compare tool flattens both documents to individual value paths (like $.address.city) and diffs them path by path, so a changed value deep inside a nested object shows up clearly instead of a wall of "objects are different." Every path is marked added, removed, or changed, with unchanged paths hidden by default so you can focus on what actually differs.

Use it for JSON compare online tasks like checking two API responses for regressions, reviewing a config change before deploying it, or confirming a refactor didn't silently alter a payload's shape. Both documents stay entirely in your browser — nothing is uploaded to a server.