Skip to content

33Across vs Concert

Based on 14 and 11 real audits

View 33Across details | View Concert details
Metric33AcrossConcertWinner
Performance2932Concert
Accessibility8693Concert
Best Practices7795Concert
SEO9094Concert
Security6666Tie
TTFB311ms62msConcert
Composite7274Concert
Performance
33Across
29
Concert
32
Accessibility
33Across
86
Concert
93
Security
33Across
66
Concert
66
SEO
33Across
90
Concert
94
Composite
33Across
72
Concert
74

Concert outperforms 33Across in 6 of 7 categories, with a stronger composite score (74 vs 72). 33Across leads in no categories.

When to choose 33Across

33Across doesn't clearly lead Concert 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 Concert

Choose Concert when your primary concern is server response time 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 11 audited Concert 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 →

FAQ

Which is faster, 33Across or Concert?
Based on real BeaverCheck audits, Concert sites score higher on Lighthouse performance (32 vs 29 on average).
Which has better security, 33Across or Concert?
33Across sites score higher on security analysis (66 vs 66 on average).
Which has better accessibility, 33Across or Concert?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor Concert (93 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 Concert?
Concert sites score higher on Lighthouse SEO signals (94 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), 33Across or Concert?
Concert sites show lower Time to First Byte (62 ms vs 311 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 Concert for my website?
Both platforms have trade-offs. Concert 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.
Audit your own site

Send Feedback