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jsDelivr CDN vs Prefix-Free

Based on 349 and 3 real audits

View jsDelivr CDN details | View Prefix-Free details
MetricjsDelivr CDNPrefix-FreeWinner
Performance3840Prefix-Free
Accessibility8891Prefix-Free
Best Practices8691Prefix-Free
SEO9189jsDelivr CDN
Security6565Tie
TTFB360ms204msPrefix-Free
Composite7372jsDelivr CDN
Performance
jsDelivr CDN
38
Prefix-Free
40
Accessibility
jsDelivr CDN
88
Prefix-Free
91
Security
jsDelivr CDN
65
Prefix-Free
65
SEO
jsDelivr CDN
91
Prefix-Free
89
Composite
jsDelivr CDN
73
Prefix-Free
72

Prefix-Free outperforms jsDelivr CDN in 4 of 7 categories, with a stronger composite score (72 vs 73). jsDelivr CDN leads in SEO, composite score.

When to choose jsDelivr CDN

Choose jsDelivr CDN when your primary concern is SEO. Its audit data shows consistent strength in these areas across the sampled sites.

When to choose Prefix-Free

Choose Prefix-Free when your primary concern is server response time and best practices. Its audit data shows consistent strength in these areas across the sampled sites.

How this comparison was built

Scores are medians across 349 audited jsDelivr CDN sites and 3 audited Prefix-Free sites in the BeaverCheck database. Every audit runs the same 100+ checks — Lighthouse performance, security headers, accessibility, SEO, server response time — against a real URL. No vendor input, no sponsorship, no affiliate links. Read the full methodology →

Small sample: one or both technologies have fewer than 10 audited sites. Treat these numbers as directional — medians stabilize around 20–30 audits per side.

FAQ

Which is faster, jsDelivr CDN or Prefix-Free?
Based on real BeaverCheck audits, Prefix-Free sites score higher on Lighthouse performance (40 vs 38 on average).
Which has better security, jsDelivr CDN or Prefix-Free?
jsDelivr CDN sites score higher on security analysis (65 vs 65 on average).
Which has better accessibility, jsDelivr CDN or Prefix-Free?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor Prefix-Free (91 vs 88). Both technologies can be made fully accessible with care — the difference reflects common patterns in the sampled sites, not inherent platform limits.
Which is better for SEO, jsDelivr CDN or Prefix-Free?
jsDelivr CDN sites score higher on Lighthouse SEO signals (91 vs 89 on average), which cover meta tags, crawlability, mobile friendliness, and structured data. Content strategy and backlinks still matter more than platform choice for ranking.
Which has faster server response (TTFB), jsDelivr CDN or Prefix-Free?
Prefix-Free sites show lower Time to First Byte (204 ms vs 360 ms on average). TTFB depends heavily on hosting and CDN setup rather than the technology itself, but the sampled sites suggest a meaningful difference in common deployment patterns.
Should I choose jsDelivr CDN or Prefix-Free for my website?
Both platforms have trade-offs. Prefix-Free scores higher on overall composite score while jsDelivr CDN may excel in metrics you care about most. Run a free BeaverCheck audit on a real site using each to compare the metrics relevant to your use case.
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