🔀 Text Diff Checker
Compare two texts and see exactly what changed. Line-level and word-level diff highlighting.
Original
Modified
Click "Compare" to see the differences between your texts.
About This Diff Checker
This tool compares two blocks of text and highlights exactly what changed between them:
- Line-level diff: uses the Longest Common Subsequence (LCS) algorithm to identify added, removed, and unchanged lines
- Word-level highlighting: within changed lines, highlights the exact words that differ
- Unified view: shows all changes in a single column, similar to
git diff - Side-by-side view: shows original and modified text in parallel columns
- Copy as unified diff: copies the output in standard unified diff format for sharing
- Similarity score: shows the percentage of lines that remained unchanged