Solid-js vs Svelte

Side-by-side NPM package comparison

solid-js

Very Popular

Version 1.9.11

85
Excellent

A declarative JavaScript library for building user interfaces.

Weekly Downloads
1.7M
↑27%
Bundle (gzip)
8.0 KB
Updated
Vulns
0

Health Score Breakdown

Maintenance
100
Popularity
100
Quality
50
Security
100
Stability
70

svelte

Very Popular

Version 5.53.6

85
Excellent

Cybernetically enhanced web apps

Weekly Downloads
3.0M
↑34%
Bundle (gzip)
9.6 KB
Updated
Vulns
0

Health Score Breakdown

Maintenance
100
Popularity
100
Quality
50
Security
100
Stability
70

Choosing between Solid-js and Svelte? 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

Svelte leads with 3.0M weekly downloads — roughly 1.8x more. Solid-js has 1.7M weekly downloads. Higher download counts generally indicate broader community adoption and a larger ecosystem of tutorials, plugins, and support.

Bundle Size

Solid-js has the smallest gzipped bundle at 8.0 KB. Svelte comes in at 9.6 KB. A smaller bundle size means faster page loads, which improves user experience and Core Web Vitals scores.

Health Score Comparison

Solid-js has an overall health score of 85/100 (very good), with strong maintenance, security, popularity scores. Svelte 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 Solid-js if you value large community support, actively maintained, strong security track record. Choose Svelte if you value large community support, actively maintained, strong security track record.

Our Verdict

Both Solid-js and Svelte are solid choices for JavaScript development. Solid-js 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 solid-js better than svelte?
It depends on your needs. Solid-js has a health score of 85/100 while Svelte scores 85/100. Svelte has more weekly downloads (3.0M), 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, solid-js or svelte?
Solid-js has the smaller gzipped bundle at 8.0 KB. A smaller bundle means faster load times for your users, which can positively impact SEO and user experience.
How many developers use solid-js vs svelte?
Based on npm download statistics, Solid-js has approximately 1.7M weekly downloads and Svelte has approximately 3.0M weekly downloads. These numbers reflect package installations, not unique developers, but they indicate relative adoption levels.
Which is better maintained, solid-js or svelte?
Solid-js currently has the higher overall health score at 85/100. Solid-js has a maintenance score of 100/100 and Svelte scores 100/100 on maintenance.

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