esm.run vs unpkg: Which is Better in 2026?
Choosing between esm.run and unpkg comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
esm.run
Load modern JavaScript packages on-demand with global CDN performance.
Best for you if:
- • Delivers JavaScript modules on-demand via a global CDN.
- • Optimized for modern web browsers, Node.js, and Deno environments.
unpkg
Instant CDN access to any npm package
Best for you if:
- • unpkg is a fast CDN for npm packages
- • It serves any file from any npm package instantly
| At a Glance |  esm.run |  unpkg |
|---|---|---|
Starts at | FreeFree tier available | FreeFree tier available |
Best For | CDN | CDN |
Rating | 4.3/5 | 4.1/5 |
Free plan | Yes | Yes |
Choose esm.run or unpkg?
Choose esm.run if
Load modern JavaScript packages on-demand with global CDN performance.
- Simplifies JavaScript module loading without a build step
- Ensures high performance and uptime globally
- Utilizes advanced web delivery optimizations
Choose unpkg if
Instant CDN access to any npm package
- Fast CDN for npm packages
- No configuration required
- Browse package files easily
| Feature | esm.run | unpkg |
|---|---|---|
| Pricing Model | Free | Free |
| User Rating | ★4.3/5 72 reviews | ★4.1/5 4,913 reviews |
| Categories | CDNDeveloper Tools | CDNDeveloper Tools |
In-Depth Analysis
esm.run
Load modern JavaScript packages on-demand with global CDN performance.
The pricing for esm.run is exceptionally generous as it offers a fully-featured CDN for JavaScript modules completely free of charge.
Watch out
No direct hidden costs as it's free.
Strengths
- +Simplifies JavaScript module loading without a build step
- +Ensures high performance and uptime globally
- +Utilizes advanced web delivery optimizations
- +Suitable for quick demos and prototyping
- +Free to use
Weaknesses
- -Currently in beta for production use
- -Limited information available on the website beyond core functionality
Key features
unpkg
Instant CDN access to any npm package
Unpkg's pricing is exceptionally generous, as it offers a fully functional CDN for npm packages completely free of charge.
Watch out
No official SLA or dedicated support
Strengths
- +Fast CDN for npm packages
- +No configuration required
- +Browse package files easily
- +Automatic latest version
- +Free to use
Weaknesses
- -Not recommended for production
- -No SLA guarantees
- -Dependency on service availability
- -Version pinning important
- -Security considerations for CDN use
Key features
Pricing: esm.run vs unpkg
| Plan | esm.run | unpkg |
|---|---|---|
| Tier 1 | Free Free | Free Free |
Pricing verified from each vendor's public pricing page. Compare in detail on esm.run pricing and unpkg pricing.
Who Should Use What?
On a budget?
Both are free. Compare plans on their websites.
Go with: esm.run
Want the highest-rated option?
esm.run: 4.3/5 (72 reviews). unpkg: 4.1/5 (4,913 reviews).
Go with: esm.run
Value user reviews?
esm.run: 72 reviews (4.3/5). unpkg: 4,913 reviews (4.1/5).
Go with: unpkg
3 Questions to Help You Decide
What's your budget?
Both are free. Pricing won't help you decide here.
What's your use case?
Both are cdn tools. Compare their specific features to decide.
How important are ratings?
esm.run is rated higher: 4.3/5 vs 4.1/5.
Key Takeaways
unpkg
- Larger review base (4,913 reviews)
- Completely free
- Our pick for this comparison
esm.run
- Higher user rating: 4.3/5 vs 4.1/5
The Bottom Line
unpkg is our pick.
Frequently Asked Questions
Is esm.run or unpkg better?
unpkg is rated in our evaluation. Both are free.
What are esm.run and unpkg used for?
esm.run: Load modern JavaScript packages on-demand with global CDN performance.. unpkg: Instant CDN access to any npm package.
What does esm.run cost vs unpkg?
esm.run is completely free. unpkg is completely free. Visit their websites for detailed pricing.