📊 Text Diff Checker

Compare two text blocks line by line and instantly see what was added, removed, or unchanged. Perfect for code review, document revision, and content editing.

Original Text:

Modified Text:

Differences:

Click "Compare" to see differences...

Removed Added

How Text Diff Works

Our diff tool compares two texts line by line using a longest common subsequence (LCS) algorithm. It identifies lines present in the original but not the modified version (removed), lines present only in the modified version (added), and lines that appear in both (unchanged).

Common Use Cases

Code review —Compare two versions of a code file
Document editing —See what changed between drafts
Configuration files —Compare server configs across environments
Plagiarism check —Spot textual similarities

All comparison is done client-side. Your text never leaves your browser.