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vitrine/content/logo-example/_index.md
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+++ title = "Logo presentation example" outputs = ["Reveal"] [logo] src = "github-logo.png" [reveal_hugo] custom_theme = "reveal-hugo/themes/robot-lung.css" margin = 0.2 +++

logo-example

This presentation shows how to add a logo to each slide, like the GitHub one you see above.

You can generalize the concept to add any additional markup to your presentations.

See the code for this presentation

For a basic setup, in the front matter, add an image to the presentation's directory.

Then, add a logo section in the front matter:

[logo]
src = "github-logo.png"

The front matter should end up looking like this:

+++
title = "Logo presentation example"
outputs = ["Reveal"]
[logo]
src = "github-logo.png"
+++

If the logo placement doesn't quite match your needs, you may customize it with the following paramaters:

[logo]
src = "github-logo.png" # Location of the file displayed.
alt = "" # Alt text. 
width = "15%" # Size of the file.
diag = "1%" # How far from the top right should the file be.
top = "1%" # Overrides diag.
right = "1%" # Overrides diag.

  • Instead of absolute (250px), relative measurments (12.5%) should be used. They work better with different screen sizes.

  • By default, null ("") is used as alt text for logos, as otherwise the alt text would unneededly get read by screen readers.

💡 Tip: to make the logo settings present on every presentation, add the settings to your site's configuration file config.toml under [params.logo]:

[params.logo]
src = "/img/logo.png"

Note that now, the path to the logo file shall be absolute, and should be stored in static/img/logo.png instead.

Depending on the theme you're using, your styles will be different.
You may also prefer to put your CSS in an external file or your Reveal.js theme.

For per-presentation override, you may add custom CSS with the ID #logo to:

layouts/partials/{section}/reveal-hugo/body.html

Substitute {section} for home if you are adding a logo to the presentation at content/_index.md. Otherwise, substitute the name of the Hugo section where your presentation lives.

For a site-wide override, use:

layouts/partials/{section}/reveal-hugo/body.html

🤗

That's it.

Happy Hugo-ing!