Diff Checker
Compare two pieces of text side-by-side with line- and word-level highlighting.
−2 removed+3 added
| 1 | The quick brown fox | 1 | The quick brown fox |
| 2 | jumps over | ||
| 3 | the lazy dog | ||
| 2 | leaps over | ||
| 3 | the sleepy dog | ||
| 4 | at dawn |
🔒 Both inputs are compared in your browser. Nothing is uploaded.
About this tool
Uses the longest-common-subsequence algorithm to find the smallest set of additions and removals that turn one text into the other. For large inputs we cap at 5,000 lines per side — beyond that, use git diff or a desktop tool.
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