gatsby:tldr:49189

The "gatsby build" command is a command-line instruction commonly used in Gatsby.js, a popular static site generator for creating fast and optimized websites.

When you run the "gatsby build" command, it triggers the build process of your Gatsby project. During this process, Gatsby compiles your project's source code, processes your assets, and generates a production-ready version of your website.

This command performs several actions, including:

1. Cleaning the existing "public" directory: Gatsby removes all the outdated build files from the "public" directory so that the latest version can be created.
2. Compiling and bundling JavaScript and CSS: Gatsby builds your project's React components, styles, and scripts into optimized bundles for performance.
3. Processing and optimizing images: Any images used in your project are processed and optimized during the build process to reduce their size without compromising quality.
4. Rendering static HTML files: Gatsby generates static HTML files for each page of your website, so it can be easily served by a web server without requiring server-side rendering on each request.
5. Creating a production-ready build: The final output of the "gatsby build" command is a production-ready collection of static files that can be deployed to a hosting provider or served locally.

Running "gatsby build" is typically done before deploying a Gatsby website to ensure that all the necessary files are generated and optimized for performance.