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jQuery Migrate vs Twenty Twenty-One

Based on 542 and 1 real audits

View jQuery Migrate details | View Twenty Twenty-One details
MetricjQuery MigrateTwenty Twenty-OneWinner
Performance4659Twenty Twenty-One
Accessibility8794Twenty Twenty-One
Best Practices8896Twenty Twenty-One
SEO9185jQuery Migrate
Security6963jQuery Migrate
TTFB662ms503msTwenty Twenty-One
Composite7675jQuery Migrate
Performance
jQuery Migrate
46
Twenty Twenty-One
59
Accessibility
jQuery Migrate
87
Twenty Twenty-One
94
Security
jQuery Migrate
69
Twenty Twenty-One
63
SEO
jQuery Migrate
91
Twenty Twenty-One
85
Composite
jQuery Migrate
76
Twenty Twenty-One
75

Twenty Twenty-One outperforms jQuery Migrate in 4 of 7 categories, with a stronger composite score (75 vs 76). jQuery Migrate leads in SEO, security, composite score.

When to choose jQuery Migrate

Choose jQuery Migrate when your primary concern is SEO and security. Its audit data shows consistent strength in these areas across the sampled sites.

When to choose Twenty Twenty-One

Choose Twenty Twenty-One 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 542 audited jQuery Migrate sites and 1 audited Twenty Twenty-One 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, jQuery Migrate or Twenty Twenty-One?
Based on real BeaverCheck audits, Twenty Twenty-One sites score higher on Lighthouse performance (59 vs 46 on average).
Which has better security, jQuery Migrate or Twenty Twenty-One?
jQuery Migrate sites score higher on security analysis (69 vs 63 on average).
Which has better accessibility, jQuery Migrate or Twenty Twenty-One?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor Twenty Twenty-One (94 vs 87). 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, jQuery Migrate or Twenty Twenty-One?
jQuery Migrate sites score higher on Lighthouse SEO signals (91 vs 85 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), jQuery Migrate or Twenty Twenty-One?
Twenty Twenty-One sites show lower Time to First Byte (503 ms vs 662 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 jQuery Migrate or Twenty Twenty-One for my website?
Both platforms have trade-offs. Twenty Twenty-One scores higher on overall composite score while jQuery Migrate 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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