Skip to content

Fastly vs FirstImpression.io

Based on 383 and 2 real audits

View Fastly details | View FirstImpression.io details
MetricFastlyFirstImpression.ioWinner
Performance4537Fastly
Accessibility9185Fastly
Best Practices8977Fastly
SEO9287Fastly
Security6660Fastly
TTFB149ms385msFastly
Composite7467Fastly
Performance
Fastly
45
FirstImpression.io
37
Accessibility
Fastly
91
FirstImpression.io
85
Security
Fastly
66
FirstImpression.io
60
SEO
Fastly
92
FirstImpression.io
87
Composite
Fastly
74
FirstImpression.io
67

Fastly outperforms FirstImpression.io in 7 of 7 categories, with a stronger composite score (74 vs 67). FirstImpression.io leads in no categories.

When to choose Fastly

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

When to choose FirstImpression.io

FirstImpression.io doesn't clearly lead Fastly 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 383 audited Fastly sites and 2 audited FirstImpression.io 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 FirstImpression.io?
Based on real BeaverCheck audits, Fastly sites score higher on Lighthouse performance (45 vs 37 on average).
Which has better security, Fastly or FirstImpression.io?
Fastly sites score higher on security analysis (66 vs 60 on average).
Which has better accessibility, Fastly or FirstImpression.io?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor Fastly (91 vs 85). 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 FirstImpression.io?
Fastly sites score higher on Lighthouse SEO signals (92 vs 87 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 FirstImpression.io?
Fastly sites show lower Time to First Byte (149 ms vs 385 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 FirstImpression.io for my website?
Both platforms have trade-offs. Fastly 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.
Audit your own site

Send Feedback