Text Compare
Compare two texts side by side and see exactly what changed, line by line, in your browser.
Paste text in both fields to see the differences.
What this tool does
Paste two versions of a text and see the differences instantly. Text Compare runs a line-by-line diff in your browser, highlighting added and removed lines and counting how much changed. Nothing is uploaded, so it is safe for drafts, contracts or config files.
Cleaning up text? Count words and characters with Word counter, or validate patterns with Regex tester.
What you can use it for
- Spot what changed between two drafts of an article or email.
- Compare two versions of a config file or log.
- Review edits a collaborator made to a block of text.
- Check whether two snippets are really identical.
How to use it
- Paste the original text on the left.
- Paste the changed text on the right.
- Read the highlighted diff: green is added, red is removed.
- Check the stats, then copy the result if you need it.
Everything runs inside your browser. No file is uploaded to any server. See more tools in this field.
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TextFrequently asked questions
How does the comparison work?
It splits both texts into lines and computes the longest common sequence, so unchanged lines line up and only the real differences are marked as added or removed. It is the same idea behind code diffs.
Is my text uploaded anywhere?
No. The whole comparison happens in your browser. Your text never leaves your device, which matters for drafts, contracts or anything confidential.
What do the statistics mean?
Added and removed count the characters contained in added and removed lines. Changes counts the number of separate edited blocks, which is a quick measure of how scattered the differences are.
Can it compare very large texts?
Yes, within reason. It trims the shared start and end first, so a small edit inside a long document stays fast. Extremely large and very different inputs fall back to a simple block replace to stay responsive.