MKDiff

MKDiff is a free collection of browser-based comparison tools for developers, editors and audio reviewers. Compare code and text revisions, JSON responses, CSV exports, images or two audio recordings without installing an application or creating an account.

Audio Diff decodes recordings locally and offers waveforms, a difference heatmap, loudness statistics, timing alignment and report export, including differences in longer endings. A built-in sample demonstrates the workflow. Audio results compare signals, not speaker identity or plagiarism.

The site also provides JSON formatting and validation and related utilities. Interfaces are available in 11 languages. MKDiff is free to use and supported by advertising.