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Configuration

mdbook-last-changed is configured using additional options under [output.html]:

[output.html]
# Required: Your repository URL used in the link.
git-repository-url = "https://github.com/$user/$project"
  • If git-repository-url is not configured the footer will not contain the commit and a link to it and instead only show the last changed date.
  • The commit URL is constructed as <git-repository-url>/commit/<commit-id> where <git-repository-url> is the configured URL and <commit-id> is the commit ID fetched from the local repository.
  • If the commit URL pattern is different you can set output.html.git-commit-url to any URL. The commit ID will be appended to that URL.
  • If you want to disable adding the link set output.html.git-commit-url = false.

Without git-repository-url configured:

<footer id="last-change">Last change: <time datetime="2023-07-09">2023-07-09</time></footer>

With git-repository-url configured:

<footer id="last-change">Last change: <time datetime="2023-07-09">2023-07-09</time>, commit: <a href="https://github.com/$user/$project/commit/$commit">0000000</a></footer>

To style the footer add a custom CSS file for your HTML output:

[output.html]
additional-css = ["last-changed.css"]

And in last-changed.css style the <footer> element or directly the CSS element id last-changed:

footer {
  font-size: 0.8em;
  text-align: center;
  border-top: 1px solid black;
  padding: 5px 0;
}

This code block shrinks the text size, center-aligns it under the rest of the content and adds a small horizontal bar above the text to separate it from the page content.

Finally, build your book as normal:

mdbook path/to/book