What is Text Diff Checker?
Text Diff Checker compares two versions of a text and highlights exactly what changed. Additions are shown in green and deletions in red, either line by line or word by word, with a summary of how many lines or words were added and removed.
Use it to review edits to documents, contracts, code snippets or translations. You can ignore whitespace and letter case for cleaner comparisons, and since nothing is uploaded, it’s safe for confidential text.
How to use Text Diff Checker
Get it done in 4 simple steps — no installation or account needed.
- Paste the original text into the left box.
- Paste the changed version into the right box.
- Choose line or word mode and any ignore options.
- Click “Compare” to see the highlighted differences and the change summary.
Who needs Text Diff Checker?
From students to professionals, here’s who gets the most out of Text Diff Checker — and why.
Editors & proofreaders
See every change between two drafts of an article.
Lawyers & contract managers
Spot edits between versions of an agreement.
Developers
Quickly compare config files, logs or code snippets.
Students & translators
Check revisions and corrections between versions.
Is Text Diff Checker safe to use?
Yes. Text Diff Checker runs entirely in your web browser using JavaScript. Your files and data are processed on your own device and are never uploaded to AppsOcean or any third-party server. There’s nothing to install, no account to create, and it’s completely free.Read our privacy policy.
Text Diff Checker — frequently asked questions
Which mode should I use?
Line mode suits code and structured text. Word mode is better for prose, where a sentence may change by just a word or two.
Can I compare Word or PDF files?
Copy the text out of the documents and paste it in. The tool compares plain text, so formatting is ignored.
Are my files uploaded to a server?
No. Everything is processed locally in your browser using JavaScript. Your files never leave your device, and nothing is stored on our side.
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