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Skypack

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Search and load millions of open-source JavaScript packages optimized for browser use.

CDNDeveloper ToolsHosting & Deployment
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Tracked since2026
0 reviews tracked

The Bottom Line

Entry price

Free plan available, paid tiers above

Biggest pro

Free for personal and commercial use

Biggest con

Advanced features like custom domains require contacting sales

TL;DR - Skypack

  • Optimized CDN for open-source JavaScript packages.
  • Eliminates the need for bundlers in browser environments.
  • Provides performance optimizations like minification, polyfilling, and caching.
Pricing: Free plan available
Best for: Growing teams

What is Skypack?

Editorial review
Skypack is a content delivery network (CDN) that provides pre-optimized JavaScript packages for direct use in browsers, eliminating the need for complex bundlers. It simplifies web development workflows by offering a global CDN that handles minification, browser polyfilling, compression (gzip/brotli), HTTP/3, and caching. This allows developers to instantly speed up websites by leveraging modern web optimizations that were previously only available to large tech companies. Skypack is designed for frontend developers of all skill levels who want to build faster, more accessible websites with less complexity. It aims to make the web more open and accessible by providing free, optimized hosting for open-source JavaScript code, supporting web standards, and simplifying the integration of external packages into web projects.

Available on: Web

how we evaluateSourceskypack.dev ↗

Pros & Cons

Pros

  • Free for personal and commercial use
  • Speeds up websites instantly with optimized JavaScript hosting
  • Simplifies web development workflow by reducing the need for build tooling
  • Backed by major cloud providers (Cloudflare, Google Cloud, AWS) for reliability
  • Supports modern web standards and open-source principles

Cons

  • Advanced features like custom domains require contacting sales
  • Relies on ES Modules support in browsers for polyfilling
  • No explicit mention of support for non-JavaScript assets beyond CSS examples

Preview

Key Features

Pre-optimized JavaScript packages for browser useMinification of JavaScriptAutomatic browser polyfilling for older browsers (supporting ES Modules)Gzip/Brotli compressionHTTP/2 and HTTP/3 supportGlobal edge cache for performanceUniversal caching across websitesUpconverts old Node packages to modern ES Modules

Pricing Plans

Pricing checked Aug 21, 2026

Basic CDN

Free

  • Production-ready
  • Backed by Cloudflare, Google Cloud, and AWS
  • Supports HTTP/2
  • Supports HTTP/3
  • Global edge cache for performance
  • Universal caching
  • Upconverts old Node packages to modern ES Modules
  • JS minification

Advanced Features

Contact us

  • Custom domain
  • Specific needs
Calculate your costView full pricing

Is Skypack worth the price?

95/100

Skypack's pricing is incredibly generous, offering a fully production-ready CDN with advanced optimizations for free.

The 'Basic CDN' tier provides exceptional value, making it an ideal choice for almost any developer or small to medium-sized project. The 'Advanced Features' tier's 'Contact us' pricing suggests custom solutions for larger enterprises with specific needs.

Hidden Costs & Gotchas

No clear pricing for 'Advanced Features' tier.

Potential for custom domain costs in advanced tier.

How Skypack Compares to Competitors

Compared to services like jsDelivr or unpkg, Skypack's free tier offers a more comprehensive suite of optimizations like ES Module waterfall optimization and automatic polyfills. While jsDelivr and unpkg are also free and widely used, Skypack's focus on modern ES Modules and advanced performance features gives it an edge for forward-thinking projects, all at no cost.

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Best Skypack Alternatives

Top alternatives based on features, pricing, and user needs.

unpkg logo
unpkgFree

Instant CDN access to any npm package

4.1
jsDelivr logo
jsDelivrFree

Free CDN for open source packages

3.9
See all CDN tools →

Still deciding?

Most buyers shortlist 2 or 3 tools before committing. Pull a side-by-side comparison or browse the full alternatives shortlist below.

Skypack vs unpkgHead-to-head: features, pricing, who winsSkypack vs jsDelivrHead-to-head: features, pricing, who wins

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Skypack FAQ

How does Skypack help speed up websites?

Skypack speeds up websites by providing a global CDN that delivers pre-optimized JavaScript packages. It handles minification, browser polyfilling, compression (gzip/brotli), HTTP/3, and caching, which allows developers to instantly leverage modern web optimizations.

Which teams benefit most from using Skypack?

Frontend developers of all skill levels benefit most from Skypack, especially those looking to build faster, more accessible websites with less complexity. It simplifies integrating external packages and reduces the need for extensive build tooling.

How is Skypack priced?

Skypack is available on a free tier, which includes core functionalities for personal and commercial use. Paid plans are offered for users requiring more usage or advanced features.

Can Skypack replace complex JavaScript bundlers in a development workflow?

Yes, Skypack can simplify web development workflows by reducing the need for complex bundlers. It delivers pre-optimized JavaScript packages directly to the browser, streamlining the process of integrating open-source libraries.

What kind of limitations should users be aware of when using Skypack?

Users should note that advanced features, such as custom domains, require contacting sales. Additionally, its polyfilling capabilities rely on ES Modules support within browsers.

How does Skypack compare to unpkg for delivering JavaScript packages?

Skypack differentiates itself from unpkg by focusing on delivering pre-optimized JavaScript packages for direct browser use, handling minification, compression, and polyfilling. It aims to instantly speed up websites by leveraging modern web optimizations, simplifying the development workflow.

Source: skypack.dev

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