# unpkg, what it is and how websites use it. A public CDN that serves the contents of any npm package straight from a URL. Used for quick prototypes and on sites that load libraries without a build step. - **Status:** Stable. Working and widespread, but without an SLA; jsDelivr or your own bundle is the safer choice for production. - **Category:** [Servers & Hosting](https://be1st.ai/technologies/server) - **First release:** 2016 - **License:** MIT - **Official website:** https://unpkg.com - **GitHub:** https://github.com/unpkg/unpkg - **Page:** https://be1st.ai/technologies/server/unpkg ## unpkg on audited websites 471 of the 16,845 websites audited by be1st run unpkg (2.8%). That ranks it #11 of the 34 technologies in Servers & Hosting we have seen in audits. ### Websites running unpkg vs all websites - **Web score:** 72 (all websites 72) - **SEO:** 80 (all websites 79) - **Security:** 60 (all websites 59) - **Performance:** 67 (all websites 72) - **AI Readiness:** 32 (all websites 31) ### Most used in Servers & Hosting 1. [Cloudflare](https://be1st.ai/technologies/server/cloudflare): 22% (3,772) 2. [Vercel](https://be1st.ai/technologies/server/vercel): 22% (3,635) 3. [Google CDN](https://be1st.ai/technologies/server/google-cdn): 16% (2,700) 4. [nginx](https://be1st.ai/technologies/server/nginx): 14% (2,284) 5. [OpenResty](https://be1st.ai/technologies/server/openresty): 10% (1,707) 6. [Apache HTTP Server](https://be1st.ai/technologies/server/apache-http-server): 9.3% (1,574) 7. [jsDelivr](https://be1st.ai/technologies/server/jsdelivr): 7.2% (1,221) 8. [cdnjs](https://be1st.ai/technologies/server/cdnjs): 6.0% (1,019) 9. [Netlify](https://be1st.ai/technologies/server/netlify): 5.8% (971) 10. [AWS CloudFront](https://be1st.ai/technologies/server/aws-cloudfront): 5.1% (859) ## Other technologies in Servers & Hosting - [Fastly](https://be1st.ai/technologies/server/fastly): 1.6% of websites - [BunnyCDN](https://be1st.ai/technologies/server/bunnycdn): 1.2% of websites - [Microsoft IIS](https://be1st.ai/technologies/server/microsoft-iis): 1.0% of websites - [LiteSpeed](https://be1st.ai/technologies/server/litespeed): <1% of websites - [Caddy](https://be1st.ai/technologies/server/caddy): <1% of websites - [Amazon S3](https://be1st.ai/technologies/server/amazon-s3): <1% of websites - [Google Cloud](https://be1st.ai/technologies/server/google-cloud): <1% of websites - [Varnish](https://be1st.ai/technologies/server/varnish): <1% of websites - [Azure](https://be1st.ai/technologies/server/azure): <1% of websites - [Hostinger CDN](https://be1st.ai/technologies/server/hostinger-cdn): <1% of websites - [GitHub Pages](https://be1st.ai/technologies/server/github-pages): <1% of websites - [Akamai](https://be1st.ai/technologies/server/akamai): <1% of websites [All 35 in Servers & Hosting](https://be1st.ai/technologies/server) ## Questions about unpkg ### What is unpkg? A public CDN that serves the contents of any npm package straight from a URL. Used for quick prototypes and on sites that load libraries without a build step. The be1st catalog lists unpkg under Servers & Hosting. License of unpkg: MIT. ### How many websites use unpkg? 471 of the 16,845 websites audited by be1st run unpkg (2.8%), as of 8 Nov 2026. ### When was unpkg first released? unpkg was first released in 2016. ### Is unpkg still a modern choice? unpkg is a stable, mature choice rather than a new one. Working and widespread, but without an SLA; jsDelivr or your own bundle is the safer choice for production. ### What are the alternatives to unpkg? Technologies that do the same job as unpkg include jsDelivr and cdnjs. Numbers: latest audit of each of 16,845 websites audited by be1st, as of 8 Nov 2026.