Updated

Technology · Web Development

Lenis

lenis.darkroom.engineering
Open source

Lenis is a modern, lightweight smooth scrolling library designed to normalize the scrolling experience across different devices and browsers. It offers a fluid, native-like scrolling behavior with minimal configuration. Lenis supports both vertical and horizontal scrolling, and can be easily integrated with animation libraries for creating engaging scroll-based animations. Its performance-focused approach and customizable easing functions make it ideal for creating polished, responsive user interfaces in web applications where scroll experience is crucial.

Lenis belongs toJavaScript librariescategory.

10websites

use it — 0.4% of the 2,555 websites we scanned in the last 12 months

#42of 108

tools in its category seen in our scans (we recognize 252)

5public pages

on UptimeCard — open any of them to see how that site is doing

0.74% of all websites we track run Lenis

At a glance

UptimeCard's own scans and tests of 2,555 websites · refreshed weekly

How Lenis sites scoreout of 100 · hover or tap a score for details

61PerformanceLowaverage site: 5086AccessibilityGoodaverage site: 8996Best practicesGoodaverage site: 9392SEOGoodaverage site: 92

Page load time

Loads about as fast as the average site

Lenis sites
4.1 s
All sites
4.3 s

Most Lenis sites load in 2.0–5.0 s. Home page weight: 2.5 MB vs 3.3 MB for all sites. 5 public sites measured.

Who uses it?

Technology and Software is the biggest group

Technology and Software60%
Business Services40%

Share of 5 classified public sites. “× average” compares with all 961 public sites.

How Lenis sites are built

Closest partners. The number says how many times more often the tool runs on Lenis sites than on an average website. Hover a partner for its share of sites.

GSAP9×Facebook Pixel3×React2×

Usually installed alongside

The bigger the bubble, the more of the 10 Lenis sites also run the tool. Colour shows what the tool does. Hover or tap a bubble for details.

Google Analytics70%Facebook Pixel60%Linkedin Insight Tag30%Google Tag Manager70%HubSpot40%DoubleClick Floodlight30%
AnalyticsTag managerMarketingAdvertising

Similar tools in its category

JavaScript libraries: 252 tools known, 108 seen in our scans

jQuery1,030 sitesAlternativeSwiper285 sitesAlternativejQuery Migrate245 sitesAlternativejQuery UI217 sitesAlternativeLodash184 sitesAlternativelit-html155 sitesAlternativelit-element128 sitesAlternativeLazySizes114 sitesAlternativecore-js776 sitesUsed together

Websites using Lenis

10 websites use Lenis: 0.4% of the 2,555 websites we scanned in the last 12 months. A selection is shown below.

Scores are out of 100: P Performance · A Accessibility · B Best practices · S SEO. Green 80+, yellow 65–79, orange 50–64, red below 50. The dot shows whether our last scan found the site failing (red) or not (green); Red, amber or blue: an active incident on the site's status page (outage, degraded, maintenance) or a failing scan; amber also means a certificate ending within 30 days. Hover the dot for details.

Questions about Lenis

How many websites use Lenis?
We found Lenis on 10 of the 2,555 websites we scanned in the last 12 months (0.4%). 5 of them have a public status page.
What is Lenis often used with?
Among the websites we scan, Lenis is often found alongside Cloudflare (70% of its sites), Google Analytics (70% of its sites), Facebook Pixel (60% of its sites).
What are the alternatives to Lenis?
Other javascript libraries tools we recognize include jQuery, core-js, Swiper, jQuery Migrate.

Is your website built with Lenis?

UptimeCard checks it around the clock, tells you the minute it stops answering, and gives your visitors a status page.

Monitor my site freeCreate a status page