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Comparison guide

Preact vs Solid-js

Side-by-side NPM package comparison

Quick Verdict

Preact leads across all categories in this comparison. Check the detailed metrics below to see how each package performs for your specific needs.

  1. preact

    Fast 4kb React-compatible Virtual DOM library.

    43.3M weekly downloads · 4.8 KB gzip · Health 85/100

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  2. solid-js

    A declarative JavaScript library for building user interfaces.

    7.5M weekly downloads · 8.2 KB gzip · Health 85/100

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Choosing between Preact and Solid-js? 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

Preact leads with 43.3M weekly downloads — roughly 5.7x more. Solid-js has 7.5M weekly downloads. Higher download counts generally indicate broader community adoption and a larger ecosystem of tutorials, plugins, and support.

Bundle Size

Preact has the smallest gzipped bundle at 4.8 KB. Solid-js comes in at 8.2 KB. A smaller bundle size means faster page loads, which improves user experience and Core Web Vitals scores.

Health Score Comparison

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

Our Verdict

Both Preact and Solid-js are solid choices for JavaScript development. Preact 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 preact better than solid-js?
It depends on your needs. Preact has a health score of 85/100 while Solid-js scores 85/100. Preact has more recorded weekly downloads (43.3M). Consider your specific requirements — bundle size, community support, and feature set — to decide which is the better fit.
Which has a smaller bundle size, preact or solid-js?
Preact has the smaller gzipped bundle at 4.8 KB. A smaller bundle means faster load times for your users, which can positively impact SEO and user experience.
How many developers use preact vs solid-js?
Preact has more recorded weekly downloads (43.3M). Download counts reflect package installations, not unique developers.
Which is better maintained, preact or solid-js?
Preact has a maintenance score of 100/100. Preact scores 100/100 and Solid-js scores 100/100 on maintenance.

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