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Deno vs Preact

Based on 1 and 1 real audits

View Deno details | View Preact details
MetricDenoPreactWinner
Performance4141Tie
Accessibility8989Tie
Best Practices100100Tie
SEO9292Tie
Security7171Tie
TTFB855ms855msTie
Composite7676Tie
Performance
Deno
41
Preact
41
Accessibility
Deno
89
Preact
89
Security
Deno
71
Preact
71
SEO
Deno
92
Preact
92
Composite
Deno
76
Preact
76

Deno and Preact are closely matched, each leading in different categories. Deno has a composite score of 76 while Preact scores 76.

When to choose Deno

Deno doesn't clearly lead Preact in any category on the sampled sites — pick it based on developer experience, ecosystem, or existing team skills rather than the audit scores.

When to choose Preact

Preact doesn't clearly lead Deno 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 1 audited Deno sites and 1 audited Preact 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, Deno or Preact?
Based on real BeaverCheck audits, Deno sites score higher on Lighthouse performance (41 vs 41 on average).
Which has better security, Deno or Preact?
Deno sites score higher on security analysis (71 vs 71 on average).
Which has better accessibility, Deno or Preact?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor Deno (89 vs 89). 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, Deno or Preact?
Deno sites score higher on Lighthouse SEO signals (92 vs 92 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), Deno or Preact?
Deno sites show lower Time to First Byte (855 ms vs 855 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 Deno or Preact for my website?
Both platforms have trade-offs. Deno scores higher on overall composite score while Deno 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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