How to compare two texts
- Paste the original version on the left and the changed version on the right.
- The differences appear instantly below. Additions are green and deletions are
red. - Choose how to compare:
- Words: best for essays, articles and contracts.
- Characters: best for short strings, codes and spotting typos.
- Lines: best for code, lists, CSV files and configuration files. Changed words inside a line are also highlighted.
- Tick Ignore case or Ignore extra spaces to hide changes that don't matter.
Uses for a text diff
- Checking edits made by a colleague, editor or client.
- Comparing two versions of a contract, policy or terms of service.
- Finding what changed between two versions of code or a config file.
- Proofreading: confirming that only the intended corrections were made.
Frequently asked questions
Is my text uploaded?
No. The comparison runs entirely in your browser, which makes it safe for confidential documents.
What does "% similar" mean?
It is the share of words (or characters, or lines) that are unchanged between the two texts.
Can it compare very large files?
Yes, for most documents. For very large texts with many changes, use Lines mode, which is the fastest.