Text Compare (Diff Checker)
Paste two versions of a text or code and see every change highlighted — line by line and word by word.
Both texts are compared in your browser — nothing is uploaded.
How to use the Text Compare (Diff Checker)
Paste two texts
Original and changed version.
Compare
Differences are highlighted.
Review & copy
Side by side or inline view.
Why use our Text Compare (Diff Checker)?
Side by side
Or a single inline view.
Word-level
Changed words inside lines are highlighted.
Ignore options
Case, whitespace and blank lines.
Summary
Added, removed and changed counts.
Open files
Compare .txt, code or CSV files.
Private
Texts never leave your browser.
Frequently asked questions
Everything you need to know about the Text Compare (Diff Checker).
Back to the toolHow does the diff checker work?
It finds the longest common parts of both texts and marks what was added (green) or removed (red).
Can I compare code?
Yes. It works with any plain text, including code, JSON, CSV and config files.
Is there a size limit?
Texts up to several thousand lines compare instantly.
Are my texts uploaded?
No. The comparison runs in your browser.
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