Side-by-side NPM package comparison
Version 5.18.0
<div align="center"><img src="https://raw.githubusercontent.com/graphql-hive/graphql-yoga/refs/heads/main/website/public/cover.png" width="720" /></div>
Version 16.7.0
Fastify GraphQL adapter with subscription support
Choosing between Graphql-yoga and Mercurius? 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.
Graphql-yoga leads with 908.4K weekly downloads — roughly 6.6x more. Mercurius has 136.7K weekly downloads. Higher download counts generally indicate broader community adoption and a larger ecosystem of tutorials, plugins, and support.
Graphql-yoga has the smallest gzipped bundle at 85.9 KB. Mercurius comes in at 210.0 KB. A smaller bundle size means faster page loads, which improves user experience and Core Web Vitals scores.
Graphql-yoga has an overall health score of 83/100 (very good), with strong maintenance, security, popularity scores. Mercurius has an overall health score of 75/100 (very good), with strong maintenance, security, popularity scores. Health scores are calculated from maintenance activity, code quality, security posture, popularity, and stability metrics.
Choose Graphql-yoga if you value actively maintained, strong security track record. Choose Mercurius if you value strong security track record.
Both Graphql-yoga and Mercurius are solid choices for JavaScript development. Graphql-yoga has the edge in overall health score (83/100), 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.