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Category: JavaScript libraries

LazySizes

Based on 270 real audits

44
Avg. Performance
86
Avg. Accessibility
87
Avg. Best Practices
92
Avg. SEO
66
Avg. Security
74
Avg. Composite
44 /100
Avg. Performance
432 ms
Avg. TTFB
74 /100
Avg. Composite
270
Sites Audited

How LazySizes sites compare

LazySizes sites tend to score below average on performance (44/100), compared to the global average of 65/100.

Recent Audits

View adoption trends → See all 260 websites using LazySizes →
SitePerformanceGradeAudited
fincantieri.com63C2026-08-25
asroma.com38C2026-08-24
ge.com26B2026-08-23
miodottore.it28B2026-08-21
Aarvana.com58B2026-08-21
1clickblinds.co.uk30B2026-08-18
ilcaffe.tv44B2026-08-18
sureflo.in64B2026-08-18
thepornator.com82B2026-08-15
fetish4all.com56B2026-08-15

Commonly Used With

Sites that use LazySizes also commonly use:

Open Graph Miscellaneous 247Google Tag Manager Tag managers 205Google Search Console Analytics 205jQuery JavaScript libraries 203Google Analytics Analytics 166Cloudflare CDN 140core-js JavaScript libraries 138Microsoft Analytics 126HSTS Security 106HTTP/3 Miscellaneous 105

Compare with...

LazySizes vs Open GraphLazySizes vs Google Tag ManagerLazySizes vs Google Search ConsoleLazySizes vs jQueryLazySizes vs Google AnalyticsLazySizes vs CloudflareLazySizes vs core-jsLazySizes vs MicrosoftLazySizes vs HSTSLazySizes vs HTTP/3

FAQ

What is the average Lighthouse performance score for LazySizes sites?
Based on 270 real audits, LazySizes sites score an average of 44/100 on Lighthouse performance.
How does LazySizes compare on web security?
LazySizes sites score an average security grade of 66/100 in BeaverCheck audits.
What is the average page load time for LazySizes websites?
The average Time to First Byte (TTFB) for LazySizes sites is 432ms based on 270 audits.
How can I improve my LazySizes site's performance?
Run a free audit on BeaverCheck to get specific recommendations for your LazySizes site. Common issues include render-blocking resources, unoptimized images, and missing caching headers.

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