Performance

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.
• Take passthrough copy out of your build-loop with the Eleventy Dev Server.
• Use the Image HTML Transform method to optimize images on-request during development.
• Use --incremental for Incremental builds.
• The Directory Output plugin will also report per-template performance and file size information.

Installation Performance#

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