shouldiuse.io

Comparison

cdnjs vs Self-hosting via npm + bundler

cdnjs

cdnjs.com

Worth it
Confidence: Medium

Use it if you need a free, zero-maintenance way to serve popular open-source libraries . Cloudflare's network makes it dependable.

Read the full report

Pick cdnjs when

  • Frontend devs serving popular JS/CSS libraries
  • Prototypes, demos, and small business sites
  • Docs and blogs wanting zero build tooling
  • Open-source projects distributing browser builds

When cdnjs is not a fit

  • GDPR-strict or privacy-sensitive sites . third-party scripts share visitor IPs
  • Mission-critical apps that cannot tolerate third-party outages . self-host
  • Private or custom code . cdnjs hosts public open-source libraries only
  • Teams needing SLAs or vendor support . none exists

Sources

  1. cdnjs official sitecdnjs.com
    official
  2. Migrating cdnjs to Cloudflare's Developer Platformblog.cloudflare.com
    official
  3. Cloudflare's Handling of an RCE Vulnerability in cdnjsblog.cloudflare.com
    security
  4. Critical Cloudflare CDN flaw allowed compromise of 12% of all sitesbleepingcomputer.com
    security
  5. cdnjs always free . FreeTier.cofreetier.co
    review
  6. CloudFlare vs cdnjs . StackSharestackshare.io
    review
  7. Legitimate interest and loading jQuery from CDN . Reddit r/gdprreddit.com
    review
  8. Public CDNs Are Useless and Dangerous . httptoolkithttptoolkit.com
    security
  9. Why by default Asp.Net Core references cdnjs . Stack Overflowstackoverflow.com
    review
  10. Usage statistics and market share of CDNJS . w3techsw3techs.com
    review
  11. CDNjs vs JSdelivr . GitHub issuegithub.com
    review
  12. htmx CDN Bad Gateway . Reddit r/htmxreddit.com
    review