jscpd - Copy/Paste Detector for Source Code for the AI Era
Copy/paste detector for programming source code, supports 150+ formats.
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Financial Contributions
For teams using jscpd in production. What’s included: → Your company listed among the contributors → Priority review for pull requests → Direc... Read more
For companies using jscpd at scale in CI/CD. What’s included: → Your logo on the OpenCollective page → Mention in the quarterly newsletter as a ... Read more
For companies where jscpd is a mission-critical tool. What’s included: → Everything from the Company Tier → Monthly 1-hour video call for integra... Read more
Top financial contributors
Individuals
$50 USD since Dec 2018
$10 USD since Feb 2021
$5 USD since Jul 2021
Organizations
$380 USD since Apr 2019
jscpd - Copy/Paste Detector for Source Code for the AI Era is all of us
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Thank you for supporting jscpd - Copy/Paste Detector for Source Code for the AI Era.
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Transparent and open finances.
$371.42 USD
$371.42 USD
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News from jscpd - Copy/Paste Detector for Source Code for the AI Era
Updates on our activities and progress.
v4.2.0 released - biggest format expansion in jscpd's 13-year history
v4.1.0 released: jscpd is now AI-native
About
super-linter, Mega-Linter, and Codacy.
📈700,000+ weekly downloads on npm
🍋peak 1.16M in April 2026
⭐️5,500+ stars on GitHub
🌎223 supported programming languages and formats (as of v4.2.0)
Maintained since 2013 by a single developer.
In 2026, jscpd took on a new role: detecting duplicate code in AI-generated codebases.
The v4.1.0 release introduced an AI Reporter, an MCP Server, and an Agent Skill that lets Claude, Cursor, Copilot, and Gemini run duplication checks during their own workflows.
v4.2.0 (May 2026) added cross-format duplicate detection - a <script> block in a .vue file can now match a .ts file, fenced code in Markdown matches the language it declares.
No other tool in this category does this.
This collective funds the time it takes to keep jscpd maintained, secure, and ready for the next decade of software development.
Our team
Andrey Kucher...
Diana