How to compare two text files and see the differences
Eyeballing two versions of a config, contract or export for differences is how mistakes slip through. A diff highlights every changed line in seconds.
Steps
- Open the diff checker and paste the original text on the left, the new version on the right.
- Differences highlight instantly — additions, deletions and changed lines each marked.
- Everything runs locally, so contracts and configs stay on your device.
Reading a diff
Removed lines show on the left, added lines on the right; a changed line appears as both. If everything looks changed, the culprit is usually whitespace or line endings (Windows CRLF vs Unix LF) — normalize case or trailing spaces first when comparing exports from different systems.
Tools used in this guide
Related guides
How to compare two text files and see the differences — FAQ
Paste both into a diff checker — every added, removed and modified line gets highlighted instantly.