86
ExcellentBun is a fast all-in-one JavaScript runtime.
- Weekly Downloads
- 2.8M
↑30%
- Bundle (gzip)
- 6.1 KB
- Updated
- Vulns
- 0
Health Score Breakdown
Maintenance
80
Popularity
100
Quality
80
Security
100
Stability
70
Comparison guide
Bun vs Deno
Side-by-side NPM package comparison
Quick Verdict
Smallest Bundle
Deno
3.3 KB gzipped
Most Popular
Bun
2.8M weekly downloads
Best Maintained
Deno
100/100 maintenance score
Highest Quality
Bun
80/100 quality score
Overall Pick
Bun
Best all-around based on popularity, size, maintenance & quality
88
ExcellentA modern runtime for JavaScript and TypeScript.
- Weekly Downloads
- 219.2K
↑115%
- Bundle (gzip)
- 3.3 KB
- Updated
- Vulns
- 0
Health Score Breakdown
Maintenance
100
Popularity
80
Quality
80
Security
100
Stability
70
Choosing between Bun and Deno? Here's a data-driven comparison based on real npm data — downloads, bundle size, health scores, and more — to help you decide which package fits your project best.
Downloads & Popularity
Bun leads with 2.8M weekly downloads — roughly 12.8x more. Deno has 219.2K weekly downloads. Higher download counts generally indicate broader community adoption and a larger ecosystem of tutorials, plugins, and support.
Bundle Size
Deno has the smallest gzipped bundle at 3.3 KB. Bun comes in at 6.1 KB. A smaller bundle size means faster page loads, which improves user experience and Core Web Vitals scores.
Health Score Comparison
Deno has an overall health score of 88/100 (very good), with strong maintenance, quality, security, popularity scores. Bun has an overall health score of 86/100 (very good), with strong maintenance, quality, security, popularity scores. Health scores are calculated from maintenance activity, code quality, security posture, popularity, and stability metrics.
When to Choose Each
Choose Bun if you value large community support, strong security track record. Choose Deno if you value minimal bundle footprint, actively maintained, strong security track record.
Our Verdict
Both Bun and Deno are solid choices for JavaScript development. Deno has the edge in overall health score (88/100), while each package brings unique strengths to the table. Evaluate them based on your project's priorities — whether that's community size, bundle efficiency, or maintenance activity — and choose the one that aligns best with your requirements.
Frequently Asked Questions
- Is bun better than deno?
- It depends on your needs. Bun has a health score of 86/100 while Deno scores 88/100. Bun has more weekly downloads (2.8M), suggesting broader adoption. Consider your specific requirements — bundle size, community support, and feature set — to decide which is the better fit.
- Which has a smaller bundle size, bun or deno?
- Deno has the smaller gzipped bundle at 3.3 KB. A smaller bundle means faster load times for your users, which can positively impact SEO and user experience.
- How many developers use bun vs deno?
- Based on npm download statistics, Bun has approximately 2.8M weekly downloads and Deno has approximately 219.2K weekly downloads. These numbers reflect package installations, not unique developers, but they indicate relative adoption levels.
- Which is better maintained, bun or deno?
- Deno currently has the higher overall health score at 88/100. Bun has a maintenance score of 80/100 and Deno scores 100/100 on maintenance.
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One PDF: the best package for every category (ORMs, bundlers, auth, testing, state management). Used by 500+ devs. Free, updated monthly.