Eleventy Performance

Eleventy is known for both its lightweight core in the form of speedy installs/builds and lightweight site output in the form of speedy sites!

Site Performance

Eleventy allows you full control over the output. That also means that by-default we do not include any costly runtime JavaScript bundles that often hamper site performance!

Sites listed on the Eleventy Leaderboards are tested and ranked (approximately) monthly as a fun community way to maintain speedy site performance for Eleventy sites.

• Want to add your site to the Leaderboards?

Looking for guidance on single page applications (SPA)?

Build Performance

Eleventy offers best-in-class build performance for JavaScript site generators.

Data taken from Which Generator Builds Markdown the Fastest? (July 2022).

Performance Tips

• You can analyze your project’s specific build performance metrics using Debug Mode.
• The Directory Output plugin will also report per-template performance and file size information.
• Take passthrough copy out of your build-loop with the Eleventy Dev Server.
• Use --incremental for Incremental builds.

Installation Performance

Data taken from The JavaScript Site Generator Review, 2023 (February 2023).

Other pages in Learn:

• Glossary
• Tutorials
• CommonJS vs. ESM
• Performance
• 11ty Bundle