Text Diff Checker
Paste two versions of a text and instantly see which lines were added, removed, or stayed the same.
- Free
- No signup
- Private
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Overview
Paste two versions of a text and instantly see which lines were added, removed, or stayed the same.
Benefits
- Clear green/red line highlighting
- Option to ignore case and whitespace
- Change summary at a glance
- Private — runs in your browser
Use Cases
- Comparing document or contract revisions
- Reviewing small code or config changes
- Checking edits an editor made
- Verifying two exports are identical
Users Also Use
How to Use
- Paste the original text in the left box and the changed text in the right box.
- Optionally ignore letter case or extra whitespace.
- Click Compare to see added lines in green and removed lines in red.
FAQ
- How does the comparison work?
- The tool compares the two texts line by line and finds the longest sequence of lines they share. Everything else is shown as added or removed.
- Can it ignore small differences?
- Yes. Tick Ignore letter case or Ignore extra whitespace to treat lines that differ only in capitalization or spacing as equal.
- Are my texts uploaded?
- No. The comparison runs in your browser, so documents and code never leave your device.
- Is there a size limit?
- You can compare up to 3,000 lines per side at a time.
About Text Diff Checker
Spot exactly what changed between two versions of a document, a config file, or a snippet of code. Our Text Diff Checker highlights additions and removals line by line and summarizes how many lines changed.