Text Diff Checker
Compare two texts or code snippets side-by-side to highlight additions and deletions.
100% Private & Client-Side
Your files are processed directly on your computer or phone. They are never uploaded to any remote server or stored anywhere.
Original Text
Modified Text
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How to use Text Diff Checker
1
Paste your original text in the left box and modified text in the right box.
2
Click 'Compare Texts'.
3
Inspect the color-coded additions and deletions.
Frequently Asked Questions
How does the comparison work?
It performs an in-browser line-by-line comparison, displaying added lines in green, removed lines in red, and unchanged lines in clean neutral tone.
Is there any character or file length limit?
Because processing runs directly on your computer's CPU, you can compare large documents without arbitrary server upload restrictions.