Text Diff Checker
Compare two texts side-by-side and highlight differences. Find what changed between versions instantly!
Paste texts to compare them
Features
- Side-by-side comparison
- Highlight additions
- Highlight deletions
- Line-by-line diff
- Copy diff output
- Swap texts easily
How to Use
- 1Paste original text on the left
- 2Paste modified text on the right
- 3View highlighted differences below
- 4Copy the diff if needed
About Text Diff Checker
Whether you are reviewing code changes, comparing document drafts, or auditing configuration files, manually spotting minor textual differences is practically impossible. Our free online diff checker provides an intuitive, side-by-side visual comparison, instantly highlighting exactly what has been added, removed, or modified between two bodies of text. This ensures you never miss a misplaced comma, an altered code block, or a subtle grammatical edit again.
Built specifically for developers, editors, and writers, this text difference calculator utilizes advanced string comparison algorithms to provide line-by-line accuracy. Red highlights clearly mark deletions while green indicators signify new additions, mimicking the interface of popular Git version control systems. Because the tool runs entirely within your computer's browser, you can safely compare proprietary codebases, confidential legal contracts, or unreleased manuscripts without worrying about data privacy or external server uploads.
Frequently Asked Questions
What do the colors mean?
Green = added, Red = removed, Yellow = changed, No highlight = unchanged.
Is this a word-by-word diff?
This is a line-by-line diff. It compares whole lines, not individual words.
Can I compare code?
Yes! It works great for comparing code, configuration files, or any text.
Is there a size limit?
No hard limit, but very large texts may slow down the browser.