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Compare C and C++ files online

Compare C or C++ source files, headers, and make configurations side-by-side with full syntax highlighting. Runs entirely in your browser — nothing is uploaded to any server.

L: 0 lines  |  R: 0 lines Paste or upload C / C++ files, then click Compare
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Compare C and C++ files online — fast, free, and private

Use TextFileCompare.com to compare C / C++ files directly in your browser. Compare C or C++ source files, headers, and make configurations side-by-side with full syntax highlighting. No account required, no data uploaded — your code never leaves your device.

Common use cases

Embedded firmware diffing

Library header comparison

Macro and typedef review

Compiler flag before/after

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