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Polyfill vs Varnish

Based on 7 and 441 real audits

View Polyfill details | View Varnish details
MetricPolyfillVarnishWinner
Performance5344Polyfill
Accessibility8889Varnish
Best Practices9689Polyfill
SEO8191Varnish
Security6965Polyfill
TTFB46ms202msPolyfill
Composite7874Polyfill
Performance
Polyfill
53
Varnish
44
Accessibility
Polyfill
88
Varnish
89
Security
Polyfill
69
Varnish
65
SEO
Polyfill
81
Varnish
91
Composite
Polyfill
78
Varnish
74

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

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.

When to choose Varnish

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

How this comparison was built

Scores are medians across 7 audited Polyfill sites and 441 audited Varnish 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, Polyfill or Varnish?
Based on real BeaverCheck audits, Polyfill sites score higher on Lighthouse performance (53 vs 44 on average).
Which has better security, Polyfill or Varnish?
Polyfill sites score higher on security analysis (69 vs 65 on average).
Which has better accessibility, Polyfill or Varnish?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor Varnish (89 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, Polyfill or Varnish?
Varnish sites score higher on Lighthouse SEO signals (91 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), Polyfill or Varnish?
Polyfill sites show lower Time to First Byte (46 ms vs 202 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 Polyfill or Varnish for my website?
Both platforms have trade-offs. Polyfill scores higher on overall composite score while Polyfill 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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