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c15t vs HSTS

Based on 1 and 2599 real audits

View c15t details | View HSTS details
Metricc15tHSTSWinner
Performance2748HSTS
Accessibility8689HSTS
Best Practices9688c15t
SEO9291c15t
Security7970c15t
TTFB490ms365msHSTS
Composite8075c15t
Performance
c15t
27
HSTS
48
Accessibility
c15t
86
HSTS
89
Security
c15t
79
HSTS
70
SEO
c15t
92
HSTS
91
Composite
c15t
80
HSTS
75

c15t outperforms HSTS in 4 of 7 categories, with a stronger composite score (80 vs 75). HSTS leads in performance, accessibility, TTFB.

When to choose c15t

Choose c15t when your primary concern is security and best practices. Its audit data shows consistent strength in these areas across the sampled sites.

When to choose HSTS

Choose HSTS 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 1 audited c15t sites and 2599 audited HSTS 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, c15t or HSTS?
Based on real BeaverCheck audits, HSTS sites score higher on Lighthouse performance (48 vs 27 on average).
Which has better security, c15t or HSTS?
c15t sites score higher on security analysis (79 vs 70 on average).
Which has better accessibility, c15t or HSTS?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor HSTS (89 vs 86). 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, c15t or HSTS?
c15t sites score higher on Lighthouse SEO signals (92 vs 91 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), c15t or HSTS?
HSTS sites show lower Time to First Byte (365 ms vs 490 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 c15t or HSTS for my website?
Both platforms have trade-offs. HSTS scores higher on overall composite score while c15t 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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