GUIDE · 2026-07-23
How to use the Text Diff Checker
Find changed lines in configs, drafts and code snippets directly in your browser. The result follows “Classify unchanged, added and removed lines with a longest common subsequence (LCS)” and is designed for situations such as compare two configuration versions. Inputs are handled immediately in your browser with no account required.
How it works
Classify unchanged, added and removed lines with a longest common subsequence (LCS)
Most processing stays in your browser instead of sending inputs to our server. Verify important financial or contractual decisions against an authoritative source.
Useful examples
- Compare two configuration versions
- Review edits between document drafts
- Inspect added and removed lines in a code snippet
Frequently asked questions
Does it compare individual characters?
The current version provides a clear line-by-line comparison.
How much text can I compare?
Each input is limited to 500 lines to prevent the browser from freezing.
Is my text stored?
No. The comparison runs only in your browser memory.