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lit-html vs Polymer

Based on 264 and 11 real audits

View lit-html details | View Polymer details
Metriclit-htmlPolymerWinner
Performance3647Polymer
Accessibility8887lit-html
Best Practices8795Polymer
SEO9069lit-html
Security6572Polymer
TTFB286ms157msPolymer
Composite7374Polymer
Performance
lit-html
36
Polymer
47
Accessibility
lit-html
88
Polymer
87
Security
lit-html
65
Polymer
72
SEO
lit-html
90
Polymer
69
Composite
lit-html
73
Polymer
74

Polymer outperforms lit-html in 5 of 7 categories, with a stronger composite score (74 vs 73). lit-html leads in accessibility, SEO.

When to choose lit-html

Choose lit-html when your primary concern is SEO and accessibility. Its audit data shows consistent strength in these areas across the sampled sites.

When to choose Polymer

Choose Polymer 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 264 audited lit-html sites and 11 audited Polymer 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, lit-html or Polymer?
Based on real BeaverCheck audits, Polymer sites score higher on Lighthouse performance (47 vs 36 on average).
Which has better security, lit-html or Polymer?
Polymer sites score higher on security analysis (72 vs 65 on average).
Which has better accessibility, lit-html or Polymer?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor lit-html (88 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, lit-html or Polymer?
lit-html sites score higher on Lighthouse SEO signals (90 vs 69 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), lit-html or Polymer?
Polymer sites show lower Time to First Byte (157 ms vs 286 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 lit-html or Polymer for my website?
Both platforms have trade-offs. Polymer scores higher on overall composite score while lit-html 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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