Copy reviews
See which lines changed between drafts.
Documentation
Text Diff Checker documentation
Compare two text blocks side-by-side, copy unified patches, and control whitespace sensitivity.
Overview
Use it when the format needs to change, not the meaning
Use Text Diff Checker when you need to see how two blocks differ before you copy anything else.
Patch sharing
Copy a unified diff for handoff or review.
Supported inputs
Bring clean source text and keep the direction straight
- Accepts two text blocks of any reasonable length.
- Whitespace sensitivity can be turned on or off.
- Review the generated output before publishing it.
Walk through it
Follow the same sequence you see in the tool
Workflow
Compare two blocks
Use the main form when you want to review edits line by line.
- Paste the left and right text blocks.
- Choose the whitespace setting.
- Run the diff and copy the patch or the changed lines.
What you get
Check the result before you copy it into the next step
Diff view
Changed lines are highlighted for quick review.
Unified patch
Copy the patch when you need a portable diff.
Avoid these mistakes
Small input problems create the biggest conversion errors
Whitespace setting ignored
Check whether spaces and blank lines should count.
Wrong side pasted
Confirm each text block is on the correct side.