Skip to content

Category: JavaScript libraries

LazySizes

Based on 242 real audits

44
Avg. Performance
87
Avg. Accessibility
86
Avg. Best Practices
92
Avg. SEO
64
Avg. Security
73
Avg. Composite
44 /100
Avg. Performance
422 ms
Avg. TTFB
73 /100
Avg. Composite
242
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

See all 237 websites using LazySizes →
SitePerformanceGradeAudited
bb.com.br27C2026-05-25
Diehl.com65B2026-05-17
Mainstreetestatesales.com54B2026-05-10
Webnetz.de69B2026-05-10
Magicandcards.com36C2026-05-09
www.endisbarbers.ch17D2026-05-07
uned.es49C2026-04-23
nea.org48C2026-04-23
washingtonian.com30C2026-04-22
uhc.com26C2026-04-22

Commonly Used With

Sites that use LazySizes also commonly use:

Open Graph Miscellaneous 223Google Search Console Analytics 190Google Tag Manager Tag managers 184jQuery JavaScript libraries 181Google Analytics Analytics 147Microsoft Analytics 124Cloudflare CDN 123core-js JavaScript libraries 122Google Font API Font scripts 94HSTS Security 93

Compare with...

LazySizes vs Open GraphLazySizes vs Google Search ConsoleLazySizes vs Google Tag ManagerLazySizes vs jQueryLazySizes vs Google AnalyticsLazySizes vs MicrosoftLazySizes vs CloudflareLazySizes vs core-jsLazySizes vs Google Font APILazySizes vs HSTS

FAQ

What is the average Lighthouse performance score for LazySizes sites?
Based on 242 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 64/100 in BeaverCheck audits.
What is the average page load time for LazySizes websites?
The average Time to First Byte (TTFB) for LazySizes sites is 422ms based on 242 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.

Audit your LazySizes site now

Run Audit

Send Feedback