Text Diff Checker

Paste original and modified texts to highlight additions, deletions, and differences line by line.

Original Text (A)

Modified Text (B)

Processed locally in your browser — nothing is uploaded.

How to Use

It uses a Longest Common Subsequence (LCS) algorithm to align lines and compute differences.

Find and Replace

Find and replace text with case-sensitive, whole word, and regex options.

Sort Lines

Sort lines alphabetically, numerically, in reverse, or randomly shuffle them.