CRISPR-CAS FINDER
Chrome recommended. This tool uses SharedArrayBuffer and WebAssembly threads, which require cross-origin isolation. It may not work correctly in Safari or other browsers.

This is a browser-based WebAssembly port of CRISPRCasFinder (source on GitHub), running entirely client-side — no data ever leaves your machine. If analysis is too slow on your device, the official CRISPRCasFinder web server offers the same analysis server-side, independent of your local hardware.

Run CRISPR-Cas detection in your browser

Full CRISPR repeat and CAS system detection, entirely client-side. No uploads, no servers, no waiting.

Input

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CRISPR options

CAS detection

References

If you use this tool or the underlying algorithms, please cite:

  1. Couvin D, Bernheim A, Toffano-Nioche C, Touchon M, Michalik J, Néron B, Rocha EPC, Vergnaud G, Gautheret D, Pourcel C. CRISPRCasFinder, an update of CRISRFinder, includes a portable version, enhanced performance and integrates search for Cas proteins. Nucleic Acids Res. 2018 Jul 2;46(W1):W246–W251. DOI: 10.1093/nar/gky425 — PMID: 29790974
  2. Grissa I, Vergnaud G, Pourcel C. CRISPRFinder: a web tool to identify clustered regularly interspaced short palindromic repeats. Nucleic Acids Res. 2007 Jul;35(Web Server issue):W52–7. DOI: 10.1093/nar/gkm360 — PMID: 17537822
  3. Abby SS, Néron B, Ménager H, Touchon M, Rocha EP. MacSyFinder: a program to mine genomes for molecular systems with an application to CRISPR-Cas systems. PLoS One. 2014 Oct 17;9(10):e110726. DOI: 10.1371/journal.pone.0110726 — PMID: 25330359
  4. Néron B, Denise R, Coluzzi C, Touchon M, Rocha EPC, Abby SS. MacSyFinder v2: Improved modelling and search engine to identify molecular systems in genomes. Peer Community Journal, 2023. DOI: 10.1101/2022.09.02.506364