LazySizes

2,054 websites

1,974 uptime cards

What is LazySizes?

LazySizes belongs to JavaScript libraries and Performance categories.

LazySizes is a lightweight, feature-rich JavaScript library used for lazy loading images, iframes, scripts, and other resources. It intelligently loads content only when it's about to enter the viewport, significantly improving page load times and reducing bandwidth usage. LazySizes is highly configurable and works...

LazySizes Performance Insights

2,054 websites

Websites using LazySizes

LazySizes

Last 30 days uptimeⓘ

99.909%

LazySizes friendly technologies

Google Analytics

Yoast SEO

core-js

Module Federation

Google Tag Manager

PHP

MySQL

Bootstrap

Cart Functionality

Google Font API

Facebook Pixel

HSTS

Priority Hints

Webpack

Cloudflare

Open Graph

WordPress

jQuery

Who Uses LazySizes?

1,974 uptime cards

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Instant.Page is a lightweight JavaScript library that uses just-in-time preloading to make website navigation faster.

Lozad.js

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Lozad.js is a lightweight JavaScript library for efficient lazy loading of images and other media, improving page load times.

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Quicklink is a JavaScript library that automatically prefetches links in the viewport, speeding up subsequent page loads.

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Intersection Observer is a browser API that efficiently detects when an element enters or leaves the viewport, useful for implementing lazy loading and infinite scrolling.