Zoven

Text Diff

Compare two texts and find differences online

What is the Text Diff?

The text diff works like this: it compares two texts line by line using the LCS diff algorithm and highlights added, removed and changed lines side by side. Everything happens on your device - the input never leaves your tab unless the tool clearly states it performs a server-side lookup.

How to use the Text Diff

1. Paste your text into the editor.
2. Pick the transformation or analysis you need.
3. Review the highlighted result before using it.
4. Copy the finished text back to your document.

Features

• Compare two texts and find differences online
• Instant result, no page reload
• Works in any modern browser, desktop or mobile
• Free with no signup

Common mistakes to avoid

• Pasting text with invisible characters from other editors
• Expecting automated transforms to preserve legal formatting exactly

Examples

Input	Result
"color: red" → "color: blue"	One changed line: color: red removed, color: blue added

Best used for

• Getting a reliable answer for text diff without installing an app
• One-off tasks done in under a minute from any device
• Checking results before committing them to something important
• Working on a phone where desktop software is unavailable

Privacy

Text processing happens in your browser; nothing is uploaded.

Frequently asked questions

Does it detect word-level changes?

It highlights at line level with inline word marking inside changed lines, matching how code review tools behave.

What do the three highlight colours mean?

Green marks lines present only in the second text (added), red marks lines only in the first (removed), and a changed block is shown as its removal plus its addition - the LCS algorithm guarantees the smallest such edit set.

Does the comparison ignore whitespace?

By default lines match exactly, including indentation - a space-only change shows as a real difference, which is often exactly the bug you are hunting.

More like this

Zoven offers 200+ free browser tools. Browse by category - Calculators, Converters, Generators, Developer Tools and Media Tools - or read workflow guides on the Zoven blog.