Gatsby vs Heroku: Static Site Generator vs Cloud Platform Comparison

Comparing Gatsby (static site framework) and Heroku (cloud platform). Understand the differences between a JAMstack build tool and a PaaS hosting solution to choose the right approach for your web projects.

Updated 2026-09 · 2026

Gatsby

React-based static site generator for blazing fast websites

Freeopen source

Strengths

+Completely free and open source framework
+Excellent performance with pre-rendered static pages
+Rich plugin ecosystem for CMS integrations and functionality

Weaknesses

-Build times can be slow for large sites (1000+ pages)
-Requires separate hosting solution (Netlify, Vercel, etc.)
-Steeper learning curve for non-React developers

Best for

Developers building content-heavy static sites, blogs, documentation, and marketing sites who want maximum performance and SEO benefits

Heroku

Cloud platform for deploying and scaling web applications

$5/month

Strengths

+Simple git-based deployment workflow
+Supports multiple languages (Node, Python, Ruby, Java, etc.)
+Extensive add-on marketplace for databases and services

Weaknesses

-No free tier since November 2022
-More expensive than competitors for production workloads
-Eco dynos sleep after 30 minutes of inactivity; avoiding sleep requires the pricier Basic tier ($7/mo) or higher

Best for

Teams needing a simple platform to deploy full-stack applications with databases and backend services without managing infrastructure

Feature Comparison

Feature	Gatsby	Heroku
Primary Use Case	Static site generation framework	Cloud application hosting platform
Pricing Model	Free (open source)	$5-$500+/month per dyno
Hosting Included	No - requires separate hosting	Yes - full hosting platform
Backend Support	No - static sites only	Yes - full backend support
Database Support	Build-time only via GraphQL	Yes - Postgres, Redis, MySQL add-ons
Deployment Method	Build locally or CI/CD, deploy to CDN	Git push to Heroku remote
Performance	Excellent - pre-rendered static files	Good - depends on dyno tier
Scaling	Automatic via CDN	Manual dyno scaling
Build Time	Required for every content change	Only on code deployment
Dynamic Content	Limited - requires client-side JS or rebuilds	Full support for dynamic applications
Learning Curve	Moderate - React/GraphQL knowledge helpful	Low - straightforward deployment
Best For	Blogs, docs, marketing sites	Full-stack web applications

The Verdict

Gatsby and Heroku serve fundamentally different purposes and aren't direct competitors. Gatsby is a free static site generator ideal for content-focused sites that prioritize performance and SEO, while Heroku is a paid platform-as-a-service for hosting dynamic applications with backends and databases. Choose Gatsby for static content sites where you'll handle hosting separately, or Heroku when you need a complete hosting solution for full-stack applications with server-side logic.

How to switch from Gatsby to Heroku

1Run `gatsby build` in your project to generate the static output into the `public/` directory — this is Gatsby's built-in production export, producing plain HTML, CSS, JS, and asset files with no proprietary format.
2Add a minimal server (e.g., an Express app with `express.static('public')`) or use a static buildpack, plus a `Procfile` with a `web:` process entry so Heroku knows how to serve the exported files.
3Initialize a Heroku app (`heroku create`), set any required environment variables (API keys for CMS sources used at build time), and push the repo with `git push heroku main`.
4Recreate any CI-triggered rebuilds (e.g., Netlify's content-change webhooks) using Heroku Scheduler or a GitHub Actions workflow that runs `gatsby build` and redeploys on content updates.
5Point your domain's DNS to the new Heroku app and update SSL settings (Heroku's Automated Certificate Management), keeping the old host live until DNS propagation completes.
6Once traffic and builds are confirmed stable on Heroku, decommission the old static host and remove its deploy hooks from your CMS or repo.

Gatsby vs Heroku: common questions

How do I migrate a Gatsby site to Heroku?+

Run `gatsby build` locally to generate the static `public/` directory, then commit a small Node/Express server (or use a static buildpack) that serves those files, plus a `Procfile` telling Heroku how to start it. Push the repo with `git push heroku main` and Heroku will run the build and start the server on its assigned dyno.

What do I lose by moving from Gatsby to Heroku?+

You lose the automatic global CDN caching and near-zero-cost static hosting that Gatsby sites get on Netlify/Vercel; Heroku serves pages from a dyno instead, which is slower for pure static content and costs money from day one. You also give up Gatsby's build-time GraphQL data layer unless you keep the Gatsby build step in your deploy pipeline.

Is Heroku's free tier enough for a small team?+

No — Heroku removed its free tier in November 2022, so the cheapest option now is the $5/month Eco dyno, which still sleeps after 30 minutes of inactivity. For an always-on small app you'll need at least a Basic dyno at $7/month per app, plus any database add-ons.

Will my existing Gatsby plugins and CMS integrations still work on Heroku?+

Content-source plugins (Contentful, WordPress, etc.) still work because they run at build time, but you'll need to trigger `gatsby build` on Heroku (via a build script or CI) rather than relying on a CDN's automatic rebuild hooks. Client-side plugins and static asset optimizations carry over unchanged since they're baked into the build output.

Is it cheaper to run a Gatsby site on Heroku long-term?+

Generally no — a static Gatsby site costs $0-$19/month on Netlify or Vercel's free/pro tiers, while serving the same static files through a Heroku dyno starts at $5-7/month and climbs fast if you add a database, custom domain SSL add-ons, or scale dynos for traffic. Heroku only makes financial sense here if you're also running a dynamic backend alongside the static frontend.