PHPackages                             styletools/async - PHPackages - PHPackages  [Skip to content](#main-content)[PHPackages](/)[Directory](/)[Categories](/categories)[Trending](/trending)[Leaderboard](/leaderboard)[Changelog](/changelog)[Analyze](/analyze)[Collections](/collections)[Log in](/login)[Sign up](/register)

1. [Directory](/)
2. /
3. [Utility & Helpers](/categories/utility)
4. /
5. styletools/async

ActiveProject[Utility & Helpers](/categories/utility)

styletools/async
================

A lightweight and high performance async CSS and script loader for frontend optimization.

2.0.4(4y ago)1948MIT

Since May 18Compare

[ Source](https://github.com/pagespeed-pro/async)[ Packagist](https://packagist.org/packages/styletools/async)[ RSS](/packages/styletools-async/feed)WikiDiscussions Synced 3d ago

READMEChangelogDependenciesVersions (14)Used By (0)

### README not available

The README for this package hasn't been synced yet. View it on [GitHub](https://github.com/pagespeed-pro/async).

###  Health Score

30

—

LowBetter than 62% of packages

Maintenance20

Infrequent updates — may be unmaintained

Popularity16

Limited adoption so far

Community2

Small or concentrated contributor base

Maturity67

Established project with proven stability

How is this calculated?**Maintenance (25%)** — Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window.

**Popularity (30%)** — Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores.

**Community (15%)** — Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement.

**Maturity (30%)** — Project age, version count, PHP version support, and release stability.

###  Release Activity

Cadence

Every ~77 days

Recently: every ~137 days

Total

13

Last Release

1671d ago

Major Versions

1.1.3 → 2.0.42021-12-03

### Community

Maintainers

![](https://www.gravatar.com/avatar/6c2fe161ce09eac571f4be80cedda3a8fcaaf35678c60c9df8d1df7b22475162?d=identicon)[pagespeed.pro](/maintainers/pagespeed.pro)

---

Tags

asynchronouscssoptimizationlocalstorageasync csscss-loadercache-apiscript-loaderasync-js

### Embed Badge

![Health badge](/badges/styletools-async/health.svg)

```
[![Health](https://phpackages.com/badges/styletools-async/health.svg)](https://phpackages.com/packages/styletools-async)
```

###  Alternatives

[react/event-loop

ReactPHP's core reactor event loop that libraries can use for evented I/O.

1.3k159.3M742](/packages/react-event-loop)[matthiasmullie/minify

CSS & JavaScript minifier, in PHP. Removes whitespace, strips comments, combines files (incl. @import statements and small assets in CSS files), and optimizes/shortens a few common programming patterns.

2.0k33.1M437](/packages/matthiasmullie-minify)[scssphp/scssphp

scssphp is a compiler for SCSS written in PHP.

62930.2M303](/packages/scssphp-scssphp)[tubalmartin/cssmin

A PHP port of the YUI CSS compressor

23143.5M65](/packages/tubalmartin-cssmin)[wikimedia/less.php

PHP port of the LESS processor

12329.5M124](/packages/wikimedia-lessphp)[tarunkorat/laravel-asset-cleaner

Safely detect and remove unused CSS, JS, SCSS and other assets from Laravel applications

746.0k1](/packages/tarunkorat-laravel-asset-cleaner)

PHPackages © 2026

[Directory](/)[Categories](/categories)[Trending](/trending)[Changelog](/changelog)[Analyze](/analyze)