HTML diff is optimized for HTML structure changes. This tool uses LCS (Longest Common Subsequence) algorithm for line-level diff detection, suitable for comparing HTML snippets, templates, and web page structural changes.
Results show side-by-side with line numbers. Green lines (+) = added content, Red lines (-) = removed content, Yellow lines = modified content. Line numbers help locate specific changes.
Absolutely. All comparison happens in your browser. Your code is never uploaded to any server. Safe for sensitive code comparison.
Yes. The Unicode-based comparison algorithm handles Chinese, Japanese, Korean, and all multi-byte characters correctly.
Yes. Once loaded, this tool works entirely in your browser with no network requests. All processing is done client-side.