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33Across vs Sizmek

Based on 14 and 3 real audits

View 33Across details | View Sizmek details
Metric33AcrossSizmekWinner
Performance2934Sizmek
Accessibility8689Sizmek
Best Practices7782Sizmek
SEO908933Across
Security666333Across
TTFB311ms502ms33Across
Composite7272Tie
Performance
33Across
29
Sizmek
34
Accessibility
33Across
86
Sizmek
89
Security
33Across
66
Sizmek
63
SEO
33Across
90
Sizmek
89
Composite
33Across
72
Sizmek
72

33Across and Sizmek are closely matched, each leading in different categories. 33Across has a composite score of 72 while Sizmek scores 72.

When to choose 33Across

Choose 33Across when your primary concern is server response time and security. Its audit data shows consistent strength in these areas across the sampled sites.

When to choose Sizmek

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

How this comparison was built

Scores are medians across 14 audited 33Across sites and 3 audited Sizmek 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, 33Across or Sizmek?
Based on real BeaverCheck audits, Sizmek sites score higher on Lighthouse performance (34 vs 29 on average).
Which has better security, 33Across or Sizmek?
33Across sites score higher on security analysis (66 vs 63 on average).
Which has better accessibility, 33Across or Sizmek?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor Sizmek (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, 33Across or Sizmek?
33Across sites score higher on Lighthouse SEO signals (90 vs 89 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), 33Across or Sizmek?
33Across sites show lower Time to First Byte (311 ms vs 502 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 33Across or Sizmek for my website?
Both platforms have trade-offs. Sizmek scores higher on overall composite score while 33Across 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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