cdnjs

cdnjs is a free and open-source software (FOSS) content delivery network (CDN) hosted by Cloudflare.[3][4] As of May 2021, it serves 4,013 JavaScript and CSS libraries, which are stored publicly on GitHub.[5][6][7] It is included in millions of websites, or 12.4% of the websites on the Internet, making it the second most popular CDN for JavaScript.[8][9][10]

cdnjs
Developer(s)Ryan Kirkman, Thomas Davis, Matt Cowley, Sven Sauleau, Tyler Caslin
Initial releaseFebruary 25, 2011 (2011-02-25)[1]
Repositorygithub.com/cdnjs/cdnjs
Written inJavaScript, Go
Operating systemCross-platform
TypeFOSS CDN
LicenseMIT License[2]
Websitecdnjs.com

History

In January 2011, Ryan Kirkman and Thomas Davis created the service,[11] launching it on GitHub on February 25, 2011.[12][13][14] It initially served content through Amazon CloudFront.[12][15] On June 15, 2011,[16] cdnjs partnered with Cloudflare, who provided the CDN and subdomain cdnjs.cloudflare.com for the project.[12][13][14][17]

On November 1, 2019, the founders turned over control of cdnjs to Cloudflare, citing "technical and commercial reasons."[18] According to the community maintainers, the project was difficult to manage because of limited access to the GitHub repository, inactive founders, and a small budget.[18][19][20] It is estimated the annual budget at the time was approximately $50/yr.[18][21]

Operation

The service is maintained by the community and Cloudflare.[4] As of May 2021, there have been 1,443 contributors to the main GitHub repository, and 88 contributors to the newer package configuration GitHub repository.[6][22]

It is also sponsored by DigitalOcean, Algolia, Heroku, Atlassian, Sentry, and Lean20.[23][24][25]

There is a public JSON API for developers to query cdnjs library metadata.[26][27]

Resources on cdnjs can be loaded using a number of connection protocols – HTTP/2, HTTP, HTTPS or SPDY.[5][25][28]

The cdnjs.cloudflare.com domain is part of the HSTS preload list.[29]

There exist websites that host clones of cdnjs libraries on their own servers:

References
  1. "cdnjs/cdnjs GitHub API". GitHub. Retrieved 8 July 2019.
  2. "cdnjs/LICENSE at master · cdnjs/cdnjs". Retrieved 17 April 2019.
  3. "libraries - cdnjs.com - The best FOSS CDN for web related libraries to speed up your websites!". Retrieved 17 April 2019.
  4. "Sponsorships". Cloudflare. Retrieved September 3, 2020.
  5. "Top 4 CDN services for hosting open source libraries | opensource.com". opensource.com. Retrieved 18 April 2019.
  6. "cdnjs/cdnjs: 🤖 CDN assets - The #1 free and open source CDN built to make life easier for developers". Retrieved 13 May 2021.
  7. Ivanovs, Alex (April 3, 2014). "Faster Content Delivery Solutions for Web Developers". The Huffington Post. Retrieved September 3, 2020.
  8. "Usage Statistics and Market Share of JavaScript Content Delivery Networks for Websites". W3Techs. Retrieved 13 May 2021.
  9. Goto, Daichi (November 1, 2018). "JavaScript CDNのCDNJSが成長中、シェア8%超え". Mynavi.
  10. "ULTIMATE GUIDE TO CDNJS- WHAT IT DOES FOR YOUR WEBSITE". BelugaCDN. July 27, 2020. Retrieved September 3, 2020.
  11. "cdnjs.com: the missing cdn". cdnjs.com. Archived from the original on January 25, 2011. Retrieved September 3, 2020.
  12. "CDNJS: Community Moderated Javascript Libraries + CloudFlare". Cloudflare. Retrieved 18 April 2019.
  13. "345 - Behind CDNJS - #Cat5TV Category5TV". May 3, 2014. Retrieved September 3, 2020.
  14. "63: CDNJS with Thomas Davis and Ryan Kirkman". The Changelog. June 21, 2011. Retrieved September 3, 2020.
  15. "cdn js | Treehouse Blog". Retrieved 18 April 2019.
  16. @Cloudflare (16 June 2011). "CDNJS: all the Internet's best Javascript libraries, now in a single, fast repo powered by CloudFlare! blog.cloudflare.com/cdnjs-community-moderated-javascript-librarie" (Tweet) – via Twitter.
  17. Perez, Sarah (June 24, 2019). "Cloudflare issues affecting numerous sites on Monday AM [Update: fixed]". TechCrunch. Retrieved September 3, 2020.
  18. "Lack of cdnjs activity". Hacker News. November 1, 2019. Retrieved September 3, 2020.
  19. "Lack of cdnjs activity". GitHub. October 21, 2019. Retrieved September 3, 2020.
  20. "An Update on CDNJS". The Cloudflare Blog. December 19, 2019. Retrieved September 3, 2020.
  21. "cdnjs". Open Collective. Archived from the original on December 24, 2019. Retrieved September 3, 2020.
  22. "cdnjs/packages: 📦 Package configurations - The #1 free and open source CDN built to make life easier for developers". Retrieved 13 May 2021.
  23. "Open Source at DigitalOcean". Retrieved 8 July 2019.
  24. "15+ Free CDN WordPress Services to Boost Your Site Speed (2019) - CollectiveRay". Retrieved 18 April 2019.
  25. "About Us - cdnjs - The #1 free and open source CDN built to make life easier for developers". Retrieved 13 May 2021.
  26. "cdnjs API | ProgrammableWeb". Retrieved 18 April 2019.
  27. "API - cdnjs.com - The best FOSS CDN for web related libraries to speed up your websites!". Retrieved 17 April 2019.
  28. "CDNJS: The Fastest Javascript Repo on the Web". Cloudflare. Retrieved 18 April 2019.
  29. "HSTS Preload List Submission". Retrieved 17 April 2019.
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