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cdnjs

Free#18 of 33 in Content Delivery NetworksCDN Software

cdnjs: A focused, free CDN for delivering curated web libraries through Cloudflare’s network. Ranked #18 of 33 in Content Delivery Networks by our editors (6.7/10); pricing: Free plan; best for free delivery of curated web libraries.

6.7/10Editor score

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cdnjs6.7 Visit cdnjs

At a glance

Editor score
6.7 / 10
Pricing
Free plan
Best for
Free delivery of curated web libraries
Free plan
Yes
Paid from
Free
Facts checked
24 Sep 2026

Where it wins
- Global delivery through Cloudflare’s network
- HTTP/2, HTTP/3, QUIC, Brotli, and GZIP support
- Automatic updates and Subresource Integrity hash generation
Where it doesn't
- Limited to JavaScript, CSS, and font library assets
- Not designed for video delivery or edge compute
- Catalog scope is narrower than a general-purpose CDN

Our verdict on cdnjs

cdnjs is a free, open-source, community-driven content delivery network for commonly used JavaScript, CSS, and font resources. It is aimed at web developers who want to include hosted libraries with script or link tags, without a build step or npm installation. The single Free plan provides open-source library assets and global delivery through Cloudflare’s network. Its web and API access make it suitable for direct browser inclusion as well as programmatic queries.

The product’s strongest fit is its focused delivery workflow. Developers can select resources from a curated catalog and include them directly in web pages. cdnjs supports HTTP/2, HTTP/3, QUIC, HTTPS, Brotli, and GZIP, while Subresource Integrity hash generation adds a way to verify included resources. Automatic library updates from npm and GitHub help keep catalog entries connected to their upstream sources. An unauthenticated API is also available for querying cdnjs, and npm and GitHub are part of its surrounding ecosystem.

cdnjs should appeal to teams that need straightforward public delivery for established JavaScript, CSS, and font libraries, particularly when avoiding a build step is useful. Its open-source model and free pricing keep the offering simple, but its scope is deliberately narrow. This is a library CDN rather than a broad delivery platform: it does not target video delivery or edge compute, and its catalog is centered on curated web assets. Choose cdnjs for common front-end resources and direct inclusion; choose a broader CDN when your requirements extend beyond those asset types.

Your product? Our editors can test cdnjs in depth and publish a review, labelled as paid · from $149/mo →

cdnjs pricing

Plans Free planFree Free to use — no paid tier required for the core job.

See plans on cdnjs.com

cdnjs fact sheet

Free plan	Yes
Paid from	Free
Edge locations	Not verified
Image optimization	Not verified
Video delivery	Not verified
Origin shield	Not verified
Edge compute	Not verified
Real-time logs	Not verified
Deployment	Cloud
Platforms	Web
Pricing	Free plan
Website	cdnjs.com
Facts checked	24 Sep 2026

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Also Ranked In

cdnjs is ranked in 2 of our directories.

#34CDN Software34 tools ranked

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Featured on iTechGuides

cdnjs is listed in our Content Delivery Networks directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Last updated 7 Oct 2026 · How we research and update