JavaScript Libraries & Utilities

jQuery

Fast, small JavaScript library simplifying DOM manipulation, event handling, and AJAX. Still used by 77% of the top 10M websites.

jQuery UI

jQuery UI is a collection of GUI widgets, animated visual effects, and themes implemented with jQuery, Cascading Style Sheets, and HTML.

Modernizr

Modernizr is a JavaScript library that detects the features available in a user's browser.

Lottie

lazysizes

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

GSAP

Professional-grade JavaScript animation library used on 12M+ sites. ScrollTrigger, MorphSVG, and timeline-based animations.

D3.js

Data-driven JavaScript library for creating dynamic, interactive data visualizations in the browser using SVG, Canvas, and HTML.

Lightbox

Lightbox is small javascript library used to overlay images on top of the current page.

Underscore.js

Underscore.js is a JavaScript library which provides utility functions for common programming tasks. It is comparable to features provided by Prototype.js and the Ruby language, but opts for a functional programming design instead of extending object prototypes.

AOS (Animate On Scroll)

Moment.js

Moment.js is a free and open-source JavaScript library that removes the need to use the native JavaScript Date object directly.

ShareThis

ShareThis provides free engagement and growth tools (e.g., share buttons, follow buttons, and reaction buttons) for site owners.

Animate.css

Animate.css is a ready-to-use library collection of CSS3 animation effects.

Disqus

Disqus is a worldwide blog comment hosting service for web sites and online communities that use a networked platform.

Lodash

Modern JavaScript utility library providing modularity, performance, and 300+ functions for arrays, objects, strings, and more.

Chart.js

Simple yet flexible JavaScript charting library with 8 chart types, animations, and responsive design out of the box.

AOS

JavaScript library to animate elements on your page as you scroll.

AddThis

AddThis is a social bookmarking service that can be integrated into a website with the use of a web widget.

Highcharts

Highcharts is a charting library written in pure JavaScript, for adding interactive charts to a website or web application. Highcharts meets accessibility standards and works with Python, Angular, React, iOS, Android, and more.

Unbounce

Unbounce is a tool to build landing pages.

OptinMonster

OptinMonster is a conversion optimisation tool that allows you to grow your email list.

Axios

Promise-based HTTP client for the browser and Node.js with interceptors, automatic JSON parsing, and request/response transforms.

Mapbox GL

Three.js

JavaScript 3D library for creating and displaying animated 3D computer graphics in the browser using WebGL.

Leaflet

Leaflet is the open-source JavaScript library for mobile-friendly interactive maps.

ScrollMagic

ScrollMagic is a jQuery plugin which essentially lets you use the scrollbar like a playback scrub control.

Polyfill.io

HTMX

Sumo

Sumo is a plugin offering set of marketing tools to automate a website's growth. These tools help drive extra traffic, engage visitors, increase email subscribers and build community.

Anime.js

Anime.js (/ˈæn.ə.meɪ/) is a lightweight JavaScript animation library with a simple, yet powerful API.It works with CSS properties, SVG, DOM attributes and JavaScript Objects.

Socket.io

Wisepops

Wisepops is an intelligent popup and marketing automation system that offers marketers a single platform from which to create and manage website popups.

Day.js

Sleeknote

Sleeknote is a cloud-based software that helps online businesses reach conversion goals through website popups.

Instapage

Instapage is a cloud-based landing page platform designed for marketing teams and agencies.

Privy

Privy is a all-in-one marketing automation platform for ecommerce.

Leadpages

LeadPages is a tool that allows users to transform their ideas into published landing pages efficiently.

Pusher

Pusher is a platform that enables real-time experiences for mobile and web applications through scalable messaging and data synchronization.

ReCharge

Recharge is the a subscription payments platform designed for merchants to set up and manage dynamic recurring billing across web and mobile.

ARM JS

ARM JS is a JavaScript library that centralizes data management and streamlines interactions with APIs.

Amaze UI

Amaze UI is a mobile-first JavaScript library designed to simplify front-end development.

Amplify JS

AmplifyJS is a set of components designed to solve common web application problems with a simplistic API. Amplify's goal is to simplify all forms of data handling by providing a unified API for various data sources.

Angular Gridster

Gridster is a JavaScript library, with a simple drag-and-drop interface, for creating intuitive, dynamic and customizable layouts in web applications.

AnythingSlider

A robust jQuery-based slider plugin.

Backstretch

A simple jQuery plugin that allows you to add a dynamically-resized, slideshow-capable background image to any page or element.

Barba.js

Barba.js is a small and easy-to-use javascript library that helps you creating fluid and smooth transitions between your website's pages.

Boba.js

Boomerang

boomerang is a JavaScript library that measures the page load time experienced by real users, commonly called RUM (Real User Measurement).

Bootbox.js

Bootbox.js is a small JavaScript library which allows you to create custom modal dialogs using Bootstrap modals, without having to worry about creating, managing, or removing any of the required DOM elements or JavaScript event handlers.

Bootstrap Table

Browser-Update.org

Browser-update.org is a tool to unobtrusively notify visitors that they should update their web browser in order to use your website.

C3.js

D3 based reusable chart library

CamanJS

CamanJS is a JavaScript library designed for image editing directly on the browser, allowing manipulation of canvas elements.

Cart.js

Cart.js is a very small open-source Javascript library that makes the addition of powerful Ajax cart functionality to your Shopify theme a breeze.

Chai

Chai is a BDD / TDD assertion library for node and the browser that can be paired with any javascript testing framework.

Choices

Choices.js is a lightweight, configurable select box/text input plugin.

Classnames

Javascript utility for conditionally joining classNames together.

Cleave.js

JavaScript library for formatting input text content when you are typing.

ClientJS

ClientJS is a JavaScript library for generating browser fingerprints, exposing all the browser data-points.

Clipboard.js

Closure Library

Closure Library is a JavaScript library developed by Google for building robust web applications, offering utilities for DOM manipulation, event handling, data structures, and more.

DHTMLX

DHTMLX specialises in building JavaScript UI libraries for project management, event planning, big data visualisation, and reporting.

Darkmode.js

Darkmode.js is a JavaScript library that enables an HTML element to switch between CSS themes.

DataTables

DataTables is a plug-in for the jQuery Javascript library adding advanced features like pagination, instant search, themes, and more to any HTML table.

Dexie.js

A Minimalistic Wrapper for IndexedDB.

Dojo

Dropzone

Dropzone is a JavaScript library that turns any HTML element into a dropzone.

Dynamics.js

Javascript library to create physics-related animations

EaselJS

EaselJS is a JavaScript library designed to simplify working with the HTML5 Canvas element, making it useful for creating games, generative art, and other graphical applications.

Easy Pie Chart

Lightweight jQuery plugin to render and animate nice pie charts with the HTML5 canvas element.

Elliptic

Fast Elliptic Curve Cryptography in plain javascript.

Enquire.js

enquire.js is a lightweight, pure JavaScript library for responding to CSS media queries.

Ethers

Ethers is a complete, tiny and simple Ethereum library.

FilePond

FilePond is a JavaScript library for file uploads.

FingerprintJS

FingerprintJS is a browser fingerprinting library that queries browser attributes and computes a hashed visitor identifier from them.

Flickity

Flickity is a JavaScript slider library, built by David DeSandro of Metafizzy fame.

FlipClock.js

FlipClock.js is a JavaScript library, offering a modern twist to displaying time and countdowns on web applications.

Floating UI

A JavaScript library to position floating elements and create interactions for them.

FooTable

FooTable is a jQuery plugin that converts HTML tables into expandable responsive tables.

Formstone

Formstone is a front-end library that simplifies web development by providing customizable jQuery plugins that abstract modern web patterns.

Framer Motion

Production-ready React animation library with declarative API, layout animations, gestures, and exit animations.

Fresco

Fresco is a responsive lightbox. Fresco comes with thumbnail support, fullscreen zoom, Youtube and Vimeo integration for HTML5 video and a powerful Javascript API.

Gijgo

Gijgo is a set of free for commercial use javascript controls.

Glide.js

Glide.js is a dependency-free JavaScript ES6 slider and carousel.

Glider.js

Glider.js is a fast, lightweight, responsive, dependency-free scrollable list with customisable paging controls.

Goat Slider

Goat Slider is a webflow library that enables users to construct advanced sliders for their sites.

Goober

Goober is a minified CSS-in-JS styling solution.

Granim.js

Granim.js is a lightweight javascript library to create fluid and interactive gradients animations.

HTML5 Media

HTML5 Media enables video and audio tags in all major browsers.

Hammer.js

Hammer.js is a JavaScript library for adding touch gestures like swipe, pinch, and rotate to web applications.

Handsontable

Handsontable is a JavaScript component that combines data grid features with spreadsheet-like UX.

HeadJS

HeadJS is a JavaScript library that optimizes web performance by managing the loading and execution of scripts and stylesheets to ensure faster page loads and efficient resource handling.

Headroom.js

Headroom.js is a JS widget that allows you to react to the user's scroll. The header slides out of view when scrolling down and slides back in when scrolling up.

Highlight.js

Highlight.js is a JavaScript library for syntax highlighting, supporting 192 languages and 496 themes.

Howler.js

Howler.js is an audio library with support for the Web Audio API and a fallback mechanism for HTML5 Audio.

Immutable.js

Immutable.js is a JavaScript library developed by Facebook that provides immutable data structures for more predictable state management in applications.

Infinite Scroll

jQuery plugin for infinite scrolling.

Instafeed.js

A way to add Instagram photos to your website.

Instant.Page

Instant.Page is a JavaScript library which uses just-in-time preloading technique to make websites faster.

InstantClick

InstantClick is a JavaScript library that speeds up your website, making navigation faster.

InstantGeo

InstantGeo is a service that provides IP geolocation to web pages

Isotope

Isotope.js is a JavaScript library that makes it easy to sort, filter, and add Masonry layouts to items on a webpage.

JSZip

JSZip is a JavaScript library that enables the creation, reading, and manipulation of zip files in a browser environment.

JsObservable

JsObservable is integrated with JsViews and facilitates observable data manipulations that are immediately reflected in the data-bound templates. The library is developed and maintained by Microsoft employee Boris Moore and is used in projects such as Outlook.com and Windows Azure.

JsRender

JsRender is the template library. The library is developed and maintained by Microsoft employee Boris Moore and is used in projects such as Outlook.com and Windows Azure.

JsViews

JsViews is the MVVM library which provides two-way data binding for the template. The library is developed and maintained by Microsoft employee Boris Moore and is used in projects such as Outlook.com and Windows Azure.

Karma

Karma is a test runner for JavaScript that runs on Node.js.

Keen-Slider

Keen-Slider is a free library agnostic touch slider with native touch/swipe behavior.

KerningJS

Kerning.js is a JavaScript library that applies real CSS rules to style, transform, and scale web typography.

Laravel Echo

Laravel Echo is a JavaScript library that makes it painless to subscribe to channels and listen for events broadcast by Laravel.

LazySizes unveilhooks plugin

LazySizes unveilhooks plugin extends lazySizes to lazyload scripts/widgets, background images, styles and video/audio elements.

Lenis

Lenis is a smooth scroll library to normalise the scrolling experience across devices.

List.js

List.js is a small, fast JavaScript library that adds search, sort, and filter functionalities to plain HTML lists, tables, or other elements without requiring any dependencies.

Loadable-Components

Loadable-Components is a library to solve the React code-splitting client-side and server-side.

Locomotive Scroll

Locomotive Scroll is an opinionated JavaScript library that provides smooth scrolling animations and advanced scroll interactions for web applications.

Lozad.js

Lozad.js is a lightweight lazy-loading library that's just 535 bytes minified & gzipped.

Lunr.js

A very simple search index.

Magnific Popup

Magnific Popup is a responsive lightbox & dialog script with focus on performance and providing best experience for user with any device.

Mailcheck

Mailcheck is a JavaScript library designed to address the issue of misspelled email addresses during user input.

Marked

Masonry

Masonry is a JavaScript library that enables a cascading grid layout, positioning elements based on available vertical space for an optimized, gap-free arrangement.

Matter.js

Matter.js is a JavaScript 2D rigid body physics engine for the web.

Mavo

Mavo is a JavaScript library that enables web developers to turn regular HTML into reactive web applications without the need for writing custom JavaScript.

Milonic

Milonic is a platform for developing Dynamic Hypertext Markup Language (DHTML) JavaScript and building dynamic, DHTML-based websites.

Mixitup

A CSS3 and jQuery Filter & Sort Plugin.

MobX

MochiKit

Moment Timezone

Moment Timezone is a library built upon Moment.js, extending its capabilities to handle time zones in JavaScript. It allows developers to parse, manipulate, and display dates and times in various time zones, providing comprehensive support for time zone conversions and adjustments in web applications.

Moofx

Moofx is a CSS3-enabled JavaScript animation library for creating and managing lightweight, hardware-accelerated animations.

Morphext

Morphext is a lightweight jQuery plugin that rotates text using Animate.css transitions for smooth, dynamic visual effects.

Morris.js

A JavaScript library that simplifies the process of creating interactive and responsive data visualizations on the web.

Muuri

Muuri is a JavaScript layout engine that allows you to build all kinds of layouts and make them responsive, sortable, filterable, draggable and/or animated.

NProgress

NProgress is a JavaScript library that displays a nanoscopic progress bar at the top of websites or web applications. It includes trickle animations to indicate loading activity, enhancing user experience by showing that content is being loaded.

Notie

Notie is a notification, input, and selection suite for javascript, with no dependencies.

Offline.js

Offline.js is a library that automatically alerts users when they have lost internet connectivity.

OpenCV

OpenCV (Open Source Computer Vision Library) is an open source computer vision and machine learning software library.

Orbit Slider

Orbit is a jQuery slider.

Packery

Packery is a JavaScript library and jQuery plugin that makes gapless and draggable layouts.

Page.js

Page.js is a micro client-side router designed to handle client-side routing within web applications.

Pannellum

Pannellum is a lightweight, free, and open source panorama viewer for the web.

Papa Parse

Papa Parse is a JavaScript library that functions as an in-browser CSV parser, enabling parsing of CSV files within web applications.

Paraglide JS

Paraglide JS is a compiler-based i18n library that emits tree-shakable message functions for optimized localization workflows.

Parsley.js

Javascript forms validation script.

PeerJS

PeerJS is a JavaScript library that enables WebRTC-based peer-to-peer data, video, and audio connections.

Peity

Peity is a jQuery plugin that converts an element's content into a simple mini svg pie, line or bar chart.

PhotoSwipe

PhotoSwipe is an open-source gallery to support JavaScript-based image zooming.

Pikaday

A refreshing JavaScript Datepicker.

Pinia

Pinia is a state management library for Vue.js.

Plupload

Plupload is a JavaScript API for dealing with file uploads.

Polyfill

Polyfill is a service which accepts a request for a set of browser features and returns only the polyfills that are needed by the requesting browser.

Popmotion

Popmotion is a collection of low-level JavaScript animation functions and utils for advanced animators.

Prefix-Free

Prefix-Free is a JavaScript library that automatically removes browser vendor prefixes from CSS properties, enabling developers to use standard CSS without worrying about cross-browser compatibility issues.

ProgressBar.js

Responsive progress bars with animated SVG paths.

PubSubJS

PubSubJS is a topic-based publish/subscribe library written in JavaScript.

Puter.js

Puter.js is a JavaScript library that provides serverless authentication, cloud services, and AI capabilities directly in the browser without requiring backend code or configuration.

Quicklink

Quicklink is a JS library which aims to be a drop-in solution for sites to prefetch links based on what is in the user's viewport.

Ractive.js

Ractive.js is a template-driven UI library.

Ramda

Ramda is a practical functional programming library for JavaScript that emphasizes immutability, currying, and function composition to facilitate writing more declarative and modular code.

React Flow

React Flow is a library for building node-based applications.

React Native for Web

React Native for Web is a library that allows developers to use React Native components and patterns to build cross-platform web applications alongside native mobile applications.

Responsive Nav

Responsive navigation plugin without library dependencies and with fast touch screen support.

Retina.js

Retina.js is an open-source script designed to facilitate the delivery of high-resolution images to devices with retina displays.

Screenfull.js

Simple wrapper for cross-browser usage of the JavaScript Fullscreen API.

Select2

Select2 is a jQuery based replacement for select boxes. It supports searching, remote data sets, and infinite scrolling of results.

Selectize

Selectize is an extensible jQuery-based custom <select> UI control.

Shepherd

Shepherd is a JavaScript library which makes an use-friendly user-guide to any website.

Showdown

A Markdown to HTML converter written in Javascript.

Sigma.js

Sigma.js is a JavaScript library designed for visualizing large-scale graphs with thousands of nodes and edges.

SignalR

Realtime web communication framework from Microsoft for ASP.NET.

SimplexNoise.js

SimplexNoise.js is a library that generates pseudorandom noise functions, designed for use in video games, graphical applications, and demoscene production.

Skitter

Skitter is a jQuery-based slider system.

Skrollr

Skrollr is a JavaScript library supporting parallax scrolling on mobile and desktop platforms in a compact 12k minified size.

Slick

Slim Select

Slim Select is a JavaScript library designed to enable the creation of select dropdowns with enhanced functionality and features.

Slimbox

Slimbox 2

Snabbt

Minimalistic animation library in javascript Snabbt.js.

Snap.svg

SockJS

SockJS is a browser-based JavaScript library that offers a WebSocket-like communication interface for applications.

SoundManager

Spin.js

Spin.js is a configurable JavaScript/CSS spinner serving as a resolution-independent loading indicator.

Spine.js

Spine is a lightweight MVC library for building JavaScript web applications.

Splide

Splide.js is a lightweight, responsive, and customizable slider and carousel library for JavaScript.

SpriteSpin

SpriteSpin is a JavaScript plugin that enables users to create 360-degree image spin animations on their websites.

Stellar.js

Stellar.js is a JavaScript library and jQuery plugin specifically designed to deliver parallax scrolling effects for web pages.

Sugar

Sugar is a Javascript utility library for working with native objects.

SugarJS

SugarJS is a JavaScript library that simplifies working with native JavaScript objects, enhancing productivity and code readability.

SweetAlert

SweetAlert is a JavaScript library that provides alternative alert and modal dialog boxes for web applications, with customisable features, aiming to improve the user interface of the default browser dialogs.

SweetAlert2

SweetAlert2 is a JavaScript library that provides customisable, visually appealing, and responsive alert and modal dialog boxes for web applications.

Swiffy Slider

Swiffy Slider is a wrapper defined in html with slides, navigation and indicators as its children.

Swup

Swup is a versatile and expandable library for implementing page transitions on websites that use server-side rendering.

Syncfusion

Syncfusion is a JavaScript UI controls library that includes a wide range of UI components in a single package.

Tablesorter

Flexible client-side table sorting.

Tabulator

Tabulator is a JavaScript tool for creating interactive tables and data grids.

TanStack

TanStack is a set of headless JavaScript libraries for building web application features such as data fetching, tables, routing, virtualization, and state management.

Tempus

Tempus is a lightweight animation frame manager for JavaScript applications, designed to optimize timing and control of visual updates.

Timeago

Timeago is a jQuery plugin that automatically updates fuzzy timestamps.

Tiny Slider

Tiny Slider is a vanilla javascript slider for all purposes.

Tinycon

A library for manipulating a websites favicon.

Tippy.js

Tippy.js is the complete tooltip, popover, dropdown, and menu solution for the web, powered by Popper.

Tipso

Tipso is a lightweight, responsive jQuery plugin designed to display customizable tooltips across devices and screen sizes.

TogetherJS

TogetherJS is an open-source JavaScript library by Mozilla that integrates collaboration tools and features into websites.

Tremor

Tremor is an open-source library for building charts and dashboards using React components, designed on top of Tailwind CSS.

TurfJS

Turf is a modular geospatial engine written in JavaScript.

Twitter typeahead.js

Typed.js

Typed.js is a library that types. It is designed to create typewriter-style animations with ease.

Typer.js

Typer.js is a JavaScript library for creating a fully configurable typing effect in HTML.

Uppy

Uppy is an open-source, modular JavaScript file uploader designed for integration and file management across web applications.

Vex

Vex is a lightweight library for creating functional dialogs using vanilla JavaScript without external dependencies.

Vuex

Vuex is a state management pattern + library for Vue.js applications.

Web Font Loader

WebFont Loader is a versatile JavaScript library that provides enhanced control and flexibility in managing web fonts.

Wijmo

Wijmo is a JavaScript UI component library built in TypeScript, ideal for developing lightweight, high-speed HTML5/JavaScript applications with no dependencies, and designed for enterprise use.

WookMark

WookMark is a plugin for laying out elements of varying heights in a column-based grid.

Wurfl

WURFL.js is JavaScript that detects device models of smartphones, tablets, smart TVs and game consoles accessing your website.

XRegExp

Xajax

YUI

YUI is a JavaScript and CSS library with more than 30 unique components including low-level DOM utilities and high-level user-interface widgets.

Zepto

Ziggy

Ziggy is a library that allows using Laravel named routes in JavaScript.

autoComplete.js

autoComplete.js is a simple, pure vanilla Javascript library.

basket.js

bowser

A small, fast and rich-API browser/platform/engine detector for both browser and node.

bxSlider

Add a respsonsive image slider to any website.

chroma.js

chroma.js is a small-ish zero-dependency JavaScript library for all kinds of color conversions and color scales.

core-js

core-js is a modular standard library for JavaScript, with polyfills for cutting-edge ECMAScript features.

crypto-js

crypto-js is a JavaScript library of crypto standards.

dc.js

A multi-dimensional charting library built to work natively with crossfilter and rendered using d3.js

decimal.js

dimple

dimple.js is a powerful and flexible open-source charting API for d3 letting you quickly and easily create and combine bar, line, area and scatter charts.

fullPage.js

fullPage.js a jQuery and vanilla JavaScript plugin for fullscreen scrolling websites.

html2canvas

Screenshots with JavaScript.

iCheck

iCheck is a library for customizable checkboxes and radio buttons.

imagesLoaded

jQuery plugin for seeing if the images are loaded.

jPlayer

jPlayer is a cross-browser JavaScript library developed as a jQuery plugin which facilitates the embedding of web based media, notably HTML5 audio and video in addition to Adobe Flash based media.

jQuery BlockUI

jQuery BlockUI is a plugin that simulates synchronous behavior in AJAX by temporarily blocking user interaction and adding DOM elements that visually indicate restricted activity until the block is removed.

jQuery DevBridge Autocomplete

Ajax Autocomplete for jQuery allows you to easily create autocomplete/autosuggest boxes for text input fields.

jQuery Migrate

Query Migrate is a javascript library that allows you to preserve the compatibility of your jQuery code developed for versions of jQuery older than 1.9.

jQuery Modal

jQuery Modal is an overlay dialog box or in other words, a popup window that is made to display on the top or 'overlayed' on the current page.

jQuery Popup Overlay

jQuery Popup Overlay is a responsive overlay which lets you create modal windows, tooltips, and more.

jsPDF

jsPDF is a HTML5 client-side solution for generating PDF documents directly within web browsers.

libphonenumber

libphonenumber is a JavaScript library for parsing, formatting, and validating international phone numbers.

lit-element

lit-element is a simple base class for creating web components that work in any web page with any framework. lit-element uses lit-html to render into shadow DOM, and adds API to manage properties and attributes.

lit-html

lit-html is a simple, modern, safe, small and fast HTML templating library for JavaScript.

lite-youtube-embed

The lite-youtube-embed technique renders the YouTube video inside the IFRAME tag only when the play button in clicked thus improving the core web vitals score of your website.

math.js

Math.js a JavaScript library that provides a comprehensive set of mathematical functions and capabilities for performing complex calculations and operations in web applications.

metisMenu

metisMenu is a collapsible jQuery menu plugin.

mobile-detect.js

Mobile-detect.js is a compact JavaScript library designed to detect devices by comparing patterns against a given User-Agent string.

p5.js

p5.js is a JavaScript library for creative coding, with a focus on making coding accessible and inclusive for artists, designers, educators, beginners, and anyone else.

parallax.js

Simple parallax scrolling effect.

pdfmake

Client/server side PDF printing in pure JavaScript.

pickadate.js

Mobile-friendly, responsive, and lightweight jQuery date & time input picker.

prettyPhoto

punycode

A robust Punycode converter that fully complies to RFC 3492 and RFC 5891, and works on nearly all JavaScript platforms.

qiankun

qiankun is a JS library who helps developers to build a micro frontends system.

script.aculo.us

scrollreveal

Reveal elements as they enter the viewport.

sidr

Sidr is a jQuery plugin for creating side menus.

slideout

A touch slideout navigation menu for your mobile web apps.

vxe-table

vxe-table is a Vue.js based PC form component, support add, delete, change, virtual scroll, lazy load, shortcut menu, data validation, tree structure, print export, form rendering, data paging, virtual list, modal window, custom template, renderer, flexible configuration items, extension interface.

waitForImages

waitForImages is a lightweight, high-performance JavaScript library that simplifies the handling of image preloading events.

web-vitals

The web-vitals JavaScript is a tiny, modular library for measuring all the web vitals metrics on real users.