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GOV.UK Toolkit vs HTTP/3

Based on 9 and 1498 real audits

View GOV.UK Toolkit details | View HTTP/3 details
MetricGOV.UK ToolkitHTTP/3Winner
Performance8251GOV.UK Toolkit
Accessibility10088GOV.UK Toolkit
Best Practices10088GOV.UK Toolkit
SEO10090GOV.UK Toolkit
Security8269GOV.UK Toolkit
TTFB194ms298msGOV.UK Toolkit
Composite8675GOV.UK Toolkit
Performance
GOV.UK Toolkit
82
HTTP/3
51
Accessibility
GOV.UK Toolkit
100
HTTP/3
88
Security
GOV.UK Toolkit
82
HTTP/3
69
SEO
GOV.UK Toolkit
100
HTTP/3
90
Composite
GOV.UK Toolkit
86
HTTP/3
75

GOV.UK Toolkit outperforms HTTP/3 in 7 of 7 categories, with a stronger composite score (86 vs 75). HTTP/3 leads in no categories.

When to choose GOV.UK Toolkit

Choose GOV.UK Toolkit 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 HTTP/3

HTTP/3 doesn't clearly lead GOV.UK Toolkit in any category on the sampled sites — pick it based on developer experience, ecosystem, or existing team skills rather than the audit scores.

How this comparison was built

Scores are medians across 9 audited GOV.UK Toolkit sites and 1498 audited HTTP/3 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, GOV.UK Toolkit or HTTP/3?
Based on real BeaverCheck audits, GOV.UK Toolkit sites score higher on Lighthouse performance (82 vs 51 on average).
Which has better security, GOV.UK Toolkit or HTTP/3?
GOV.UK Toolkit sites score higher on security analysis (82 vs 69 on average).
Which has better accessibility, GOV.UK Toolkit or HTTP/3?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor GOV.UK Toolkit (100 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, GOV.UK Toolkit or HTTP/3?
GOV.UK Toolkit sites score higher on Lighthouse SEO signals (100 vs 90 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), GOV.UK Toolkit or HTTP/3?
GOV.UK Toolkit sites show lower Time to First Byte (194 ms vs 298 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 GOV.UK Toolkit or HTTP/3 for my website?
Both platforms have trade-offs. GOV.UK Toolkit scores higher on overall composite score while GOV.UK Toolkit 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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