Skip to main content

Comparison guide

Graphql-yoga vs Mercurius

Side-by-side NPM package comparison

Quick Verdict

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

  1. graphql-yoga

    2.3M weekly downloads · 90.5 KB gzip · Health 85/100

    0
  2. mercurius

    Fastify GraphQL adapter with subscription support

    265.0K weekly downloads · 177.7 KB gzip · Health 81/100

    0

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.

Downloads & Popularity

Graphql-yoga leads with 2.3M weekly downloads — roughly 8.6x more. Mercurius has 265.0K weekly downloads. Higher download counts generally indicate broader community adoption and a larger ecosystem of tutorials, plugins, and support.

Bundle Size

Graphql-yoga has the smallest gzipped bundle at 90.5 KB. Mercurius comes in at 177.7 KB. A smaller bundle size means faster page loads, which improves user experience and Core Web Vitals scores.

Health Score Comparison

Graphql-yoga has an overall health score of 85/100 (very good), with strong maintenance, security, popularity scores. Mercurius has an overall health score of 81/100 (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 Graphql-yoga if you value large community support, actively maintained, strong security track record. Choose Mercurius if you value actively maintained, strong security track record.

Our Verdict

Both Graphql-yoga and Mercurius are solid choices for JavaScript development. Graphql-yoga 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 graphql-yoga better than mercurius?
It depends on your needs. Graphql-yoga has a health score of 85/100 while Mercurius scores 81/100. Graphql-yoga has more recorded weekly downloads (2.3M). Consider your specific requirements — bundle size, community support, and feature set — to decide which is the better fit.
Which has a smaller bundle size, graphql-yoga or mercurius?
Graphql-yoga has the smaller gzipped bundle at 90.5 KB. A smaller bundle means faster load times for your users, which can positively impact SEO and user experience.
How many developers use graphql-yoga vs mercurius?
Graphql-yoga has more recorded weekly downloads (2.3M). Download counts reflect package installations, not unique developers.
Which is better maintained, graphql-yoga or mercurius?
Graphql-yoga has a maintenance score of 100/100. Graphql-yoga scores 100/100 and Mercurius scores 100/100 on maintenance.

Related Comparisons

The 2026 JavaScript Stack Cheatsheet

One PDF: the best package for every category (ORMs, bundlers, auth, testing, state management). Used by 500+ devs. Free, updated monthly.