jscpd

Copy/paste detector for source code across 220+ languages with CI-ready reporters.

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jscpd is a free, open-source command-line tool that scans source code for duplicated blocks across more than 220 languages, built as a self-contained Rust binary with npm, Homebrew, Docker and GitHub Action distributions. It offers CI-friendly reporters such as SARIF, HTML and badges, plus a baseline mode that gates builds only on new duplication. It's aimed at developers and DevOps teams maintaining large or multi-language codebases who want duplication checks in CI.

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