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Comparison guide

Axios vs Undici

Side-by-side NPM package comparison

Quick Verdict

Smallest Bundle

Axios

15.8 KB gzipped

Most Popular

Undici

118.5M weekly downloads

Best Maintained

Axios

100/100 maintenance score

Highest Quality

Axios

50/100 quality score

Overall Pick

Axios

Best all-around based on popularity, size, maintenance & quality

axios icon

axios

Extremely Popular

Version 1.17.0

0
85
Excellent

Promise based HTTP client for the browser and node.js

Weekly Downloads
113.2M
5%
Bundle (gzip)
15.8 KB
Updated
Vulns
0

Health Score Breakdown

Maintenance
100
Popularity
100
Quality
50
Security
100
Stability
70
undici icon

undici

Extremely Popular

Version 8.4.1

0
85
Excellent

An HTTP/1.1 client, written from scratch for Node.js

Weekly Downloads
118.5M
18%
Bundle (gzip)
155.3 KB
Updated
Vulns
0

Health Score Breakdown

Maintenance
100
Popularity
100
Quality
50
Security
100
Stability
70

Choosing between Axios and Undici? 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

Undici leads with 118.5M weekly downloads — roughly 1.0x more. Axios has 113.2M weekly downloads. Higher download counts generally indicate broader community adoption and a larger ecosystem of tutorials, plugins, and support.

Bundle Size

Axios has the smallest gzipped bundle at 15.8 KB. Undici comes in at 155.3 KB. A smaller bundle size means faster page loads, which improves user experience and Core Web Vitals scores.

Health Score Comparison

Axios has an overall health score of 85/100 (very good), with strong maintenance, security, popularity scores. Undici has an overall health score of 85/100 (very good), with strong maintenance, security, popularity scores. Health scores are calculated from maintenance activity, code quality, security posture, popularity, and stability metrics.

When to Choose Each

Choose Axios if you value massive community and ecosystem, actively maintained, strong security track record. Choose Undici if you value massive community and ecosystem, actively maintained, strong security track record.

Our Verdict

Both Axios and Undici are solid choices for JavaScript development. Axios has the edge in overall health score (85/100), 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 axios better than undici?
It depends on your needs. Axios has a health score of 85/100 while Undici scores 85/100. Undici has more weekly downloads (118.5M), 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, axios or undici?
Axios has the smaller gzipped bundle at 15.8 KB. A smaller bundle means faster load times for your users, which can positively impact SEO and user experience.
How many developers use axios vs undici?
Based on npm download statistics, Axios has approximately 113.2M weekly downloads and Undici has approximately 118.5M weekly downloads. These numbers reflect package installations, not unique developers, but they indicate relative adoption levels.
Which is better maintained, axios or undici?
Axios currently has the higher overall health score at 85/100. Axios has a maintenance score of 100/100 and Undici scores 100/100 on maintenance.

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