LazySizes

99.820%

2050 websiteswebsites|1974 uptime cardsuptime c.

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

2050 websites

Websites using LazySizes

LazySizes

Last 30 days uptimeⓘ

99.820%

LazySizes friendly technologies

jQuery

99.752%

Google Analytics

99.780%

Open Graph

99.795%

Cart Functionality

99.784%

Priority Hints

99.798%

Google Font API

99.737%

Cloudflare

99.793%

core-js

99.792%

Google Tag Manager

99.801%

PHP

99.718%

Who Uses LazySizes?

1974 uptime cards

Top LazySizes Alternatives

Quicklink Lozad.js Instant.Page InstantClick Intersection Observer

Quicklink

14 websites|0 uptime cards

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

Lozad.js

73 websites|0 uptime cards

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

Instant.Page

24 websites|0 uptime cards

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

InstantClick

30 websites|0 uptime cards

InstantClick is a JavaScript library that preloads pages on hover, making website navigation feel instantaneous.

Intersection Observer

2 websites|0 uptime cards

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.