JSON diff

Features

• Compares two JSON documents key by key and value by value, down through nested objects and arrays.
• Colour-codes each difference — additions, removals, and changed values — across the paired Tree A / Tree B view.
• Ideal for spotting drift between two API responses, config snapshots, or before/after fixture files.

How it works

1. Paste the first JSON document into Version A and the second into Version B.
2. Both parse on the fly and render as side-by-side trees, with added, removed, and changed values highlighted in place.
3. Read the summary line — added, removed, and changed counts — to see exactly what shifted between the two.

Related tools

• JSON schemaValidate JSON against a schema, or generate a schema from a sample document.
• JSON formatterBeautify, minify, sort keys, validate — with live preview.
• JSON tree viewerExplore JSON as an interactive tree — expand, collapse, search, copy paths.
• JSON queryFilter and extract from any JSON using JSONPath — with live preview.

Topics covered

• json diff online
• compare json files
• json comparison
• json compare tool
• diff json
• json change tracker