The #1 free and open source CDN built to make life easier for developers, powered by @Cloudflare.

GitHub issues for support
Joined January 2011
Automatically replacing polyfill(.)io links with Cloudflare's mirror for a safer Internet cfl.re/3xBLDfi
4
36
16
127
22,943
And it happened news.ycombinator.com/item?id…. Reminder that Cloudflare runs a polyfill.io clone: cdnjs.cloudflare.com/polyfil…. Migrate as soon as you can
2
13
1
40
5,866
Polyfill.io is now available on cdnjs to reduce the risk of supply chain attacks. Replace your polyfill.io links today for a seamless experience. cfl.re/49DbJfx
3
47
7
167
51,617
Proud @Cloudflare won 4 of the 17 categories for best web tech in 2021 (web server, reverse proxy, DNS, and JS CDN). Living up to our mission of helping build a better Internet. #w3techs w3techs.com/blog/entry/web_t…
7
13
2
187
CDNJS is the JavaScript content delivery network of the year for the 6th time in a row. w3techs.com/blog/entry/web_t… @cdnjs #cdnjs
1
4
1
4
After running several different experiments for months, we expected something to break, but nothing did. Nobody even noticed! Confident of the safety of this powerful concept, we worked with the @cdnjs team to run a connection coalescing experiment. blog.cloudflare.com/connecti…
1
3
7
This is cool. We added cdnjs on the certificate for four thousand sites that use it, and gave them a single IP to see how connections would be reused. We saw 78% fewer TLS connections to cdnjs, which means lower CPU cost and better privacy. Oddly, no clear page load time boost.
1
8
2
36
CDNJS is now the most popular JavaScript content delivery network, overtaking Google Hosted Libraries. w3techs.com/technologies/ove… @cdnjs #CDNJS
6
1
12
Nice, it finally happened! @cdnjs has overtaken Google Hosted Libraries to become the top CDN on the Internet (based on W3Techs data) 🎉
1
2
12
So happy that we now have this more reliable and secure auto-update pipeline to ensure that we can continue serving new library assets for @cdnjs users that rely on us. Huge thank you to all the folks @Cloudflare involved in this, and specifically @svensauleau & @tycaslin. 🧡
5
19
🥳 @cdnjs was created 10 years ago and it's still growing. We added 1.5B requests per day over the last year.
2
15
Awesome for @Cloudflare to win 3 of the web technologies of 2020 according to @W3Techs (4 if you count CDNJS). Great job team! w3techs.com/blog/entry/web_t…
6
19
1
178
CDNJS is the JavaScript content delivery network of the year for the 5th time in a row. w3techs.com/blog/entry/web_t… @cdnjs #CDNJS
The request and cache analytics that @Cloudflare provides through the dashboard are pretty cool to look at. Also, awesome to see just how much traffic the @cdnjs API actually gets, and how much the Cloudflare caching protects my little @UseExpressJS app.
1
2
15
Kudos to @getsentry for a very impressive 6-hour turnaround on sponsorship. Welcome to @cdnjs and thank you!
4
9
We are working on a new @cdnjs website and we would appreciate your feedback! Please opt-in the beta on cdnjs.com
2
3
14
Market share of JavaScript content delivery networks among the top 1000 sites: 1. CDNJS 2. Google Hosted Libraries 3. jsDelivr w3techs.com/technologies/cro… @cdnjs @Google @jsDelivr #CDNJS #jsDelivr
3
6