mkdocs-material/docs/plugins/requirements/image-processing.md
2023-09-14 19:09:18 +02:00

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---
icon: material/image-sync-outline
---
# Image processing
Some of the [built-in plugins] depend on external libraries for efficient image
processing, most notably the [social] plugin to generate [social cards], and the
[optimize] plugin for applying [image optimization]. This guide explains how to
install those libraries in different environments.
[built-in plugins]: ../index.md
[social]: ../social.md
[social cards]: ../../setup/setting-up-social-cards.md
[optimize]: ../optimize.md
[image optimization]: ../../setup/building-an-optimized-site.md
## Dependencies
The libraries for image processing are entirely optional, and only need to be
installed if you want to use the [social] plugin or the [optimize] plugin. The
libraries are listed under the `imaging` extra:
```
pip install "mkdocs-material[imaging]"
```
This will install compatible versions of the following packages:
- [Pillow]
- [CairoSVG]
[Pillow]: https://pillow.readthedocs.io/
[CairoSVG]: https://cairosvg.org/
### Cairo Graphics
[Cairo Graphics] is a graphics library and dependency of [Pillow], which
Material for MkDocs makes use of for generating [social cards] and performing
[image optimization]. See the following section which explains how to install
[Cairo Graphics] and its dependencies on your system:
=== ":material-apple: macOS"
Make sure [Homebrew] is installed, which is a modern package manager for
macOS. Next, use the following command to install all necessary
dependencies:
```
brew install cairo freetype libffi libjpeg libpng zlib
```
=== ":fontawesome-brands-windows: Windows"
As stated in the [installation guide], the easiest way to get up and running
with the [Cairo Graphics] library on Windows is by installing [GTK+]. You
can also download a precompiled [GTK runtime].
=== ":material-linux: Linux"
There are several package managers for Linux with varying availability per
distribution. The [installation guide] explains how to install the [Cairo
Graphics] library for your distribution:
=== ":material-ubuntu: Ubuntu"
```
apt-get install libcairo2-dev libfreetype6-dev libffi-dev libjpeg-dev libpng-dev libz-dev
```
=== ":material-fedora: Fedora"
```
yum install cairo-devel freetype-devel libffi-devel libjpeg-devel libpng-devel zlib-devel
```
=== ":fontawesome-brands-suse: openSUSE"
```
zypper install cairo-devel freetype-devel libffi-devel libjpeg-devel libpng-devel zlib-devel
```
The following environments come with a preinstalled version of [Cairo Graphics]:
- [x] No installation needed in [Docker image]
- [x] No installation needed in [GitHub Actions] (Ubuntu)
[Cairo Graphics]: https://www.cairographics.org/
[Homebrew]: https://brew.sh/
[installation guide]: https://www.cairographics.org/download/
[GTK+]: https://www.gtk.org/docs/installations/windows/
[GTK runtime]: https://github.com/tschoonj/GTK-for-Windows-Runtime-Environment-Installer/releases
[Docker image]: https://hub.docker.com/r/squidfunk/mkdocs-material/
[GitHub Actions]: ../../publishing-your-site.md#with-github-actions
### pngquant
[pngquant] is an excellent library for lossy PNG compression, and a direct
dependency of the [built-in optimize plugin]. See the following section which
explains how to install [pngquant] system:
=== ":material-apple: macOS"
Make sure [Homebrew] is installed, which is a modern package manager for
macOS. Next, use the following command to install all necessary
dependencies:
```
brew install pngquant
```
=== ":fontawesome-brands-windows: Windows"
Installing [pngquant] on Windows is a little more involved. The
[pngquant-winbuild] repository contains a guide on how to set up an
environment for building [pngquant] on Windows.
=== ":material-linux: Linux"
All popular Linux distributions, regardless of package manager, should
allow to install [pngquant] with the bundled package manager. For example,
on Ubuntu, [pngquant] can be installed with:
```
apt-get install pngquant
```
The same is true for `yum` and `zypper`.
The following environments come with a preinstalled version of [pngquant]:
- [x] No installation needed in [Docker image]
[pngquant]: https://pngquant.org/
[built-in optimize plugin]: ../../setup/building-an-optimized-site.md#built-in-optimize-plugin
[pngquant-winbuild]: https://github.com/jibsen/pngquant-winbuild