What languages does GitHub pages support

I’m thinking of using GitHub pages later on for an upcoming project. I’ve tried find answers to my question but I can’t find anything.

Can you help me?

Pages supports static sites only, meaning sites built using HTML, CSS, and JS. Pages also uses Jekyll to build these sites, and will run Jekyll over your repository by default:

https://docs.github.com/en/github/working-with-github-pages/about-github-pages-and-jekyll

If you’d prefer to use a different static site generator you can disable Jekyll and serve the built content of your site instead:

https://docs.github.com/en/github/working-with-github-pages/about-github-pages#static-site-generators

Pages doesn’t support server-side languages like PHP, Python, Java, or Ruby.