JSON diff
Compare two JSON documents and highlight added and removed lines. Inputs are normalized before diffing, making formatting differences easier to ignore.
Diff
Enter JSON in both fields to compare.
// About this tool
Spot what changed between two JSON payloads or configuration files. Paste both versions and review the line-by-line difference. The result marks additions and removals clearly.
// How to use it
- Paste the original JSON on the left.
- Paste the changed JSON on the right.
- Review added and removed lines in the diff.
// Frequently asked questions
Does it ignore key order?
It normalizes indentation before comparing; key order differences may still appear as changes.
Is my JSON uploaded?
No. Comparison happens locally in your browser.