Text Diff Checker
Compare two texts and see what changed.
🔍 Compare two texts word by word. Separate with " ||| ". Lines starting with - show original, + show changed.
What Is This Tool?
This tool compares two texts word by word and shows the differences clearly. Separate the two texts with ||| so the tool knows where one ends and the other begins.
How to Use
Format: original text ||| modified text. The tool compares word by word and marks lines as = (unchanged) or -old → +new (changed).
Common Uses
- Comparing two versions of a document
- Proofreading changes
- Verifying text edits
- Tracking what changed between drafts
Frequently Asked Questions
Is this a character-level or word-level diff?
Word-level — splits on whitespace and compares word by word. This is usually what people want for prose. Character-level diffs are better for code.
About the Text Diff Checker
The Text Diff Checker handles text diffdirectly in your browser. Paste or type your input, and the tool processes it instantly — no upload, no signup, no waiting. It's built for the moments when you need a quick transformation and don't want to leave your workflow.
Because the tool runs client-side, it's fast and private. Your text never touches a server, which makes it safe for sensitive content. The interface is keyboard-friendly and works on any device with a modern browser.
How to Use This Tool
- Paste or type your input into the text area.
- Adjust any options the tool offers.
- The output updates automatically as you type or change options.
- Copy the result using the copy button.
Why Use an Online Tool?
Browser-based tools like this one have a few real advantages over installed software or manual methods:
- No installation. It opens instantly in any browser, on any operating system.
- Private by default. Everything runs locally, so your data stays on your device.
- Always up to date.There's nothing to update — you always get the latest version when you load the page.
- Free and unlimited. Use it as often as you like, with no account and no caps.
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