Text Diff Checker
Compare two blocks of text line by line.
Paste text on both sides to compare them line by line.
About the Text Diff Checker
Compare two blocks of text and see every addition, removal and change highlighted line by line. Great for spotting edits between drafts, config files or code snippets — all compared locally in your browser.
How to use it
- 1Paste the original text on one side and the changed text on the other.
- 2Review the inline diff — additions and removals are highlighted.
- 3Adjust either side to refine the comparison.
Spotting changes at a glance
Reading two versions of a document side by side to find what changed is slow and unreliable — small edits are easy to miss. A line-by-line diff does the work for you, marking exactly what was added and what was removed so nothing slips through. It's the same technique developers use in version control, but you don't need any tools or a repository: just paste both versions in. Because the comparison runs locally, you can safely diff sensitive contracts, drafts or config without anything leaving your browser.
Common uses
- Checking exactly what changed between two drafts of an article or contract.
- Reviewing edits to a config file before applying them.
- Comparing two code snippets to see what a change touched.
Frequently asked questions
- Is my text uploaded anywhere?
- No. The comparison runs entirely in your browser.
- Can I compare code or config files?
- Yes. Paste the two versions and the tool highlights every added and removed line, which makes it easy to review changes between drafts of code, config or prose.