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Fastly vs Polyfill

Based on 380 and 7 real audits

View Fastly details | View Polyfill details
MetricFastlyPolyfillWinner
Performance4653Polyfill
Accessibility9188Fastly
Best Practices8996Polyfill
SEO9281Fastly
Security6669Polyfill
TTFB148ms46msPolyfill
Composite7478Polyfill
Performance
Fastly
46
Polyfill
53
Accessibility
Fastly
91
Polyfill
88
Security
Fastly
66
Polyfill
69
SEO
Fastly
92
Polyfill
81
Composite
Fastly
74
Polyfill
78

Polyfill outperforms Fastly in 5 of 7 categories, with a stronger composite score (78 vs 74). Fastly leads in accessibility, SEO.

When to choose Fastly

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

When to choose Polyfill

Choose Polyfill when your primary concern is server response time and performance. Its audit data shows consistent strength in these areas across the sampled sites.

How this comparison was built

Scores are medians across 380 audited Fastly sites and 7 audited Polyfill 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, Fastly or Polyfill?
Based on real BeaverCheck audits, Polyfill sites score higher on Lighthouse performance (53 vs 46 on average).
Which has better security, Fastly or Polyfill?
Polyfill sites score higher on security analysis (69 vs 66 on average).
Which has better accessibility, Fastly or Polyfill?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor Fastly (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, Fastly or Polyfill?
Fastly sites score higher on Lighthouse SEO signals (92 vs 81 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), Fastly or Polyfill?
Polyfill sites show lower Time to First Byte (46 ms vs 148 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 Fastly or Polyfill for my website?
Both platforms have trade-offs. Polyfill scores higher on overall composite score while Fastly 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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