Text Diff Checker

Paste two versions of text and see exactly what changed — added and removed lines highlighted, computed right in your browser.

Spot every change at a glance

Comparing two versions of a contract, an email draft, a config file or a block of code by eye is slow and error-prone. Paste both into the boxes and the tool runs a line-by-line comparison, marking removed lines in red and added lines in green so the changes jump out immediately.

Private by design. Both texts are compared in your browser and never uploaded — safe for sensitive documents.

Frequently asked questions

Is this a word diff or line diff?

It compares line by line, which is ideal for documents, lists and code. Whole lines are marked as added or removed.

How big can the texts be?

Up to about 1,500 lines each. Larger inputs are skipped to keep the comparison fast.

Is my data uploaded?

No. The diff runs locally, so it is safe for private or sensitive text.

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