Text Diff Checker
Compare two text blocks or code snippets side by side with line and word-level diff highlighting. Free, runs locally.
About this Text Diff Checker tool
CheckHub diffs two text blocks line-by-line and word-by-word, highlighting additions, deletions, and changes — all in the browser.
How to use the Text Diff Checker
- Step 1. Paste original text on the left.
- Step 2. Paste modified text on the right.
- Step 3. Read the highlighted diff.
Frequently asked questions
- Is my text uploaded?
- No. The diff algorithm runs entirely in JavaScript on your device.
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