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Code Diff Merger

Side-by-side line diff of two code snippets with stats.

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About the Code Diff Merger

Compare two blocks of code or text line by line with a side-by-side highlighted diff, and see counts of added, removed, and unchanged lines.

Popular uses

  • diff
  • code diff
  • compare
  • merge
  • line diff

Examples

Compare functions

old code

Output

highlighted diff with +/- stats

Keyboard shortcuts

  • Copy the main outputCtrl / ⌘ + Shift + C
  • Download the resultCtrl / ⌘ + S
  • Share this toolCtrl / ⌘ + Shift + S
  • Reset the inputsAlt + R
  • Open the tool search paletteCtrl / ⌘ + K

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Frequently asked questions

Read more

Version 1.1.0 · Updated 2026-10-24 · Runs entirely in your browser