GitHub Pages: The Missing Manual

GitHub Pages is an excellent free hosting platform, but the documentation is missing out on some crucial details.

I built a simonw/playing-with-github-pages repo today. This is what I learned:

Add a .nojekyll file to disable Jekyll

GitHub Pages was originally built around the Jekyll Ruby static site framework. You can turn that off by adding a .nojekyll file to your repository root.

Weirdly, I found that this also fixed an issue where files in a directory called node_modules/ were serving as a 404. Adding .nojekyll fixed that.

/foo will serve content from foo.html, if it exists

If you create a file called foo.html in the repo and visit the page /foo you will see content from that file.

/folder will redirect to /folder/

This only happens if the folder exists.

/folder/ will serve folder/index.html

A 404.html file will be used for 404s

Creating a 404.html file in the root of the directory customizes the page served for a 404 error.

The .html rule beats the folder redirect rule

I created folder2.html and folder2/index.html:

index.json works as an index document too

Here's a StackOverflow post about this.

I created json/index.json:

Note that /json/index served a 404 - so unlike .html the .json extension is not automatically appended.

If there is no index.html or index.json a folder will 404

I created folder-with-no-index with a bar.html file but no index.html or index.json:

Custom redirects are not supported

There is no mechanism to set your own custom redirects. The suggested alternative is to serve an HTML page with a 200 status code and content that looks like this:

<html lang="en">
<head>
    <meta charset="utf-8"/>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="refresh" content="0;url=https://example.com"/>
    <link rel="canonical" href="https://example.com"/>
    <title>Redirecting to https://example.com</title>
    <style>
        body {
            font-family: sans-serif;
            max-width: 40em;
            margin: 1em auto;
        }
    </style>
</head>
<body>
    <h1>Redirecting to https://example.com</h1>
    <p>This document has moved!</p>
    <p>Redirecting to <a href="https://example.com">https://example.com</a> in 0 seconds.</p>
</body>
</html>

I figured this out from codepo8/github-redirection-demo/ (which uses Jekyll) followed by running curl -i against https://codepo8.github.io/github-redirection-demo/plain-redirect:

% curl -i 'https://codepo8.github.io/github-redirection-demo/plain-redirect'
HTTP/2 200 
server: GitHub.com
content-type: text/html; charset=utf-8
...

These days you can do custom things with GitHub Actions

I've not dug into this yet. Here's the blog page announcement.

Related

Created 2022-10-31T19:51:46-07:00, updated 2022-12-01T17:02:02-08:00 · History · Edit