Technology · Performance

LazySizes

LazySizes is one of 52 technologies we detect in Performance.

detected by AwesomeTechStack auditsgithub.com

About LazySizes

LazySizes is a JavaScript library used to delay the loading of images (iframes, scripts, etc) until they come into view.

How many people use LazySizes

GitHub · npm
  1. #1LazySizes18k
  2. #2LazySizes unveilhooks plugin18k
  3. #3Partytown14k
  4. #4Quicklink11k
  5. #5Lozad.js7.5k
  6. #6Turbo7.4k
  7. #7Instant.Page6.2k

1M npm downloads, last 30 days

#1 of 18 Performance we have counts for (of 52) · bars are GitHub stars across these neighbours; the category leader is LazySizes at 18k · as of August 30, 2026

Compare

LazySizes

#1 of 18 Performance

stars18k
downloads / 30d1M
LazySizes unveilhooks plugin

#2 of 18 Performance

stars18k
downloads / 30d1M

Audit any site that runs LazySizes.

Enter a URL to score its stack for technology quality, version health, Lighthouse performance - and AI-readiness.

How we audit LazySizes

We measure the detected version against LazySizes's release history and grade the surrounding stack with a Lighthouse-grade quality audit. Weak or outdated links weigh more - one risky dependency can pull the whole score down.

How the score works

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Technology definitions from a community-maintained catalogue, licensed GPL-3.0. Attribution and source.