What is a Text Diff Checker?
A diff answers “what changed?” between two versions of anything — configs, contracts, exported data, code snippets — far faster and more reliably than eyeballing.
This tool computes a longest-common-subsequence line diff locally: unchanged lines stay plain, removals show in red with −, additions in green with +.
How to use the Text Diff Checker
- Paste the original text on the left.
- Paste the changed text on the right.
- Click Compare and read the highlighted result.
Frequently asked questions
Is the comparison by line or by character?
By line — the right granularity for configs, lists and prose paragraphs.
A line moved — how does that show?
A move appears as a removal at the old place and an addition at the new one; the diff doesn’t track identity.
Trailing spaces make lines “differ” — why?
Lines must match exactly. Run both texts through the Whitespace Cleaner first to ignore spacing noise.
Are my texts uploaded?
No — comparison is local, safe for contracts and configs.