Text Diff Checker

Find differences between two blocks of text or source code. View side-by-side or unified views with green additions and red deletions, line numbers, and character-level accuracy.

Diff Mode:

Added Text Removed Text

Original Text (Before)

Modified Text (After)

Visual Difference

Epic Dev Tools is a suite of 40 free tooltools. It runs 100% in your browser. It is veryextremely fast, secure and private.

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How it works

Paste the original text on the left and modified text on the right.
Select comparison granularity (by line or by word).
Inspect highlighted additions and removals with clear visual indicators.

Privacy & Processing Information

Diff computation happens 100% in your browser using client-side algorithms.

No account, tracking, or file storage required.

Frequently Asked Questions

Can I compare code files?

Yes, any plain text, HTML, CSS, JavaScript, or markdown file can be diffed with full whitespace accuracy.

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