polyfill

A window.fetch JavaScript polyfill.

Standard Library

History.js gracefully supports the HTML5 History/State APIs (pushState, replaceState, onPopState) in all browsers. Including continued support for dat...

PHP 5.x support for random_bytes() and random_int()

This component provides a partial, native PHP implementation for the Mbstring extension.

ECMAScript 5 compatibility shims for legacy (and modern) JavaScript engines

Automatic polyfill service.

🐕 Bare minimum 500b fetch polyfill.

Promise packages, patterns, chat, and tutorials

A Javascript library for working with native objects.

This component provides a partial, native PHP implementation for the Ctype extension.

Shim to insulate apps from spec changes and prefix differences. Latest adapter.js release:

This component provides features unavailable in releases prior to PHP 7.0.

Check the browser compatibility of your code

:point_down::boom: JavaScript library for handling Force Touch, 3D Touch, and Pointer Pressure.

A project committed to making file access and data transfer easier, efficient for React Native developers.

This component provides a collection of functions/classes using the symfony/intl package when the Intl extension is not installed.

Polyfill for the HTML dialog element

PHP polyfills

This component provides functions unavailable in releases prior to PHP 7.3.

Polyfill for CSS `position: sticky`

jQuery contextMenu plugin & polyfill

🎚 HTML5 input range slider element jQuery polyfill

📱 Make videos playable inline on the iPhone (prevents automatic fullscreen)

🗻 Polyfill object-fit/object-position on <img>: IE9, IE10, IE11, Edge, Safari, ...

This component provides a fallback implementation for the Normalizer class provided by the Intl extension.

A polyfill for the Resize Observer API

This component provides functions unavailable in releases prior to PHP 8.0.

This component provides functions unavailable in releases prior to PHP 5.6.

:satellite: BroadcastChannel to send data between different browser-tabs or nodejs-processes :satellite: + LeaderElection over the channels https://p...

EQCSS is a CSS Reprocessor that introduces Element Queries, Scoped CSS, a Parent selector, and responsive JavaScript to all browsers IE8 and up

DEPRECATED: A position: sticky polyfill that works with filamentgroup/fixed-fixed for a safer position:fixed fallback.

This component provides a partial, native PHP implementation of the Grapheme functions from the Intl extension.

Client-side support for CSS custom properties (aka "CSS variables") in legacy and modern browsers

Element.scrollIntoView ponyfills for things like "if-needed" and "smooth"

Use WebVR today, without requiring a special browser build.

This component provides binary-safe string functions, using the mbstring extension when available.

🦄 Like polyfill but with pony pureness

A docker sidecar container to forward all traffic to local docker host or any other host

A stand-alone working lightweight version of the W3C Custom Elements specification

Proxy object polyfill

Polyfills the ResizeObserver API.

Make JSONP request like window.fetch

Modern DOM functionalities for every browser

:clipboard: Simple copying on the web, with maximum browser compatibility. (You probably don't need this anymore!)

CSS variables (Custom Properties) polyfill for IE11

JSBI is a pure-JavaScript implementation of the official ECMAScript BigInt proposal.

Toolchain for WebAssembly

Simple polyfill for URLSearchParams standard

This component provides functions unavailable in releases prior to PHP 8.1.