hugo-theme-relearn/exampleSite/content/configuration/modifications/imageeffects.en.md

+++ description = "How to extend image effects" options = ["imageEffects"] title = "Custom Image Effects" weight = 3 +++

This page shows you, how to configure custom image effects on top of existing ones.

For a detailed usage example, see this page.

If you don't configure anything in your hugo.toml, the image effects default to

{{< multiconfig >}} [params] [params.imageEffects] border = false lazy = true lightbox = true shadow = false {{< /multiconfig >}}

You can change these settings in your hugo.toml

{{< multiconfig file=hugo >}} [params] [params.imageEffects] border = true lazy = false {{< /multiconfig >}}

This would result in

{{< multiconfig >}} [params] [params.imageEffects] border = true lazy = false lightbox = true shadow = false {{< /multiconfig >}}

Adding Custom Effects

You can add new effects with boolean values

{{< multiconfig file=hugo >}} [params] [params.imageEffects] bg-white = true {{< /multiconfig >}}

Result:

{{< multiconfig >}} [params] [params.imageEffects] bg-white = true border = true lazy = false lightbox = true shadow = false {{< /multiconfig >}}

Styling Custom Effects

If the effective image effect value is

• true: add a class with the effect's name
• false: add a class with the effect's name and a "no" prefix

Example

![Minion](https://octodex.github.com/images/minion.png)

Result

<img src="https://octodex.github.com/images/minion.png" loading="lazy" alt="Minion" class="bg-white border nolazy lightbox noshadow">

Styles for default image effets are contained in the theme. Add custom styles for your extension image effects to layouts/partials/content-header.html.

In the above example you could add styles for both cases:

img.bg-white {
  background-color: white;
}
img.nobg-white {
  background-color: transparent;
}