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 [[Category:Applications]]
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<languages/>
== Installation ==

=== NixOS ===

Add {{nixos:package|chromium}} to {{NixOS Manual|name=systemPackages|anchor=#sec-package-management}}.

== Updating browser policies ==

In Chromium, policy settings are accessible via {{Ic|chrome://policy}}. They allow the user to change enterprise policies affecting things like

* Creating webapps when the browser is installed
* Finding and downloading browser extensions automatically
* Enabling or disabling the dinosaur game when the device is offline
* Disable screenshots to be taken with browser extensions
* Block all downloads from the browser (if you want to do that for some reason)
* and more!

A full list of policies can be found at [https://chromeenterprise.google/policies/ Chrome Enterprise Policy List & Management].

=== Natively Supported Policies ===

By default NixOS provides a few policies that can be enabled directly, a simple example is given below to understand how these are implemented

<syntaxhighlight lang="nixos" line="1"> programs.chromium = {
enable = true;
homepageLocation = "https://www.startpage.com/";
extensions = [
"eimadpbcbfnmbkopoojfekhnkhdbieeh;https://clients2.google.com/service/update2/crx" # dark reader
"aapbdbdomjkkjkaonfhkkikfgjllcleb;https://clients2.google.com/service/update2/crx" # google translate
];
extraOpts = {
"WebAppInstallForceList" = [
{
"custom_name" = "Youtube";
"create_desktop_shortcut" = false;
"default_launch_container" = "window";
"url" = "https://youtube.com";
}
];
};
};</syntaxhighlight>

* {{Ic|homepageLocation}} option allows you to set the site that the homepage will open on
* {{Ic|extensions}} allows for the download of extensions directly in the browser through a simple list of the extension ID's that can be obtained from the [https://chromewebstore.google.com/ Chrome Web Store] by opening an extension page and copying the last part of the URL
** In the example however there is another component, the download source from which the extensions will be downloaded
** The URL provided in the list is the link that is used by google for managing, checking and updating extensions
** So the method of just placing the extension ID can work like this: {{Ic|"fnpbehpgglbfnpimkachnpnecjncndgm"}}
** But just in case that method does not automatically function the second method is shown above, where you place {{Ic|;}} and then the URL {{Ic|https //clients2.google.com/service/update2/crx}} to explicitly tell NixOS where to install the extension from
* There are many more options that are natively supported and you can learn about them through {{Ic|man configuration.nix}}
* But as shown above there is also an {{Ic|extraOpts}} option and that is used for policies that are not supported for direct setup, such as the policy to install web-apps

=== Non-natively Supported Policies ===

There are hundreds of policies in Chromium based browsers, and not all have direct methods to set them. The {{Ic|extraOpts}} option allows for the declaration of all the other policies.

There is no single place to find all Chromium policies, but these are some places to look;

* Commonly used policies are present and documented within {{Ic|man configuration.nix}} under {{Ic|programs.chromium}}.
* You can navigate to {{Ic|chrome://policy}} and enable "Show policies with no value set" to see all available keys. Clicking a policy name opens its specific definition and usage details.
* The most up to date policies for Chromium are available in the [https://source.chromium.org/chromium/chromium/src/+/main:chrome/common/pref_names.h source code.]

== Accelerated video playback ==

Make sure [[Special:MyLanguage/Accelerated Video Playback|Accelerated Video Playback]] is setup on the system properly. Check {{ic|chrome://gpu}} to see if Chromium has enabled hardware acceleration.

If accelerated video playback is not working, check relevant flags at {{ic|chrome://flags}}, or enable them using the CLI:

{{file|/etc/nixos/configuration.nix|nix|<nowiki>
{
environment.systemPackages = with pkgs; [
(chromium.override {
commandLineArgs = [
"--enable-features=AcceleratedVideoEncoder"
"--ignore-gpu-blocklist"
"--enable-zero-copy"
];
})
];
}
</nowiki>}}

In some cases, {{ic|chrome://gpu}} will show Video Decode as enabled, but Video Acceleration Information as blank, with {{ic|chrome://media-internals}} using the FFmpeg Video Decoder (software decoding). If this happens, try to enable the following features:

{{file|/etc/nixos/configuration.nix|nix|<nowiki>
{
environment.systemPackages = with pkgs; [
(chromium.override {
commandLineArgs = [
"--enable-features=AcceleratedVideoEncoder,VaapiOnNvidiaGPUs,VaapiIgnoreDriverChecks,Vulkan,DefaultANGLEVulkan,VulkanFromANGLE"
"--enable-features=VaapiIgnoreDriverChecks,VaapiVideoDecoder,PlatformHEVCDecoderSupport"
"--enable-features=UseMultiPlaneFormatForHardwareVideo"
"--ignore-gpu-blocklist"
"--enable-zero-copy"
];
})
];
}
</nowiki>}}

== Enabling native Wayland support ==

You can enable native Wayland support in all Chromium based and most Electron apps by setting the `NIXOS_OZONE_WL` environment variable to `1`.

== Enabling DRM (Widevine support) ==

By default, {{nixos:package|chromium}} does not support playing DRM protected media. However, there is a build time flag to include the proprietary Widevine blob from Nixpkgs:

{{file|/etc/nixos/configuration.nix|nix|<nowiki>
{
environment.systemPackages = with pkgs; [
(chromium.override { enableWideVine = true; })
];
}
</nowiki>}}

== KeePassXC support in Flatpak ==

To enable browser integration between KeePassXC and Chromium-based browsers when running in Flatpak, configure the following filesystem access:

<syntaxhighlight lang="toml"># NativeMessagingHost directory (browser-specific)
# Brave Browser
xdg-config/BraveSoftware/Brave-Browser/NativeMessagingHosts:ro
# Chromium
xdg-config/chromium/NativeMessagingHosts:ro
# Google Chrome
xdg-config/google-chrome/NativeMessagingHosts:ro

# KeePassXC server socket and Nix store
xdg-run/app/org.keepassxc.KeePassXC/org.keepassxc.KeePassXC.BrowserServer
/nix/store:ro
</syntaxhighlight>

== Using libc memory allocator ==

Chromium may not work when an alternative system-wide memory allocator like scudo is used. To use libc on Chromium, the following firejail wrap is required:

<syntaxhighlight lang="nix">
programs.firejail = {
enable = true;
wrappedBinaries = {
chromium = {
executable = "${pkgs.chromium}/bin/chromium-browser";
profile = "${pkgs.firejail}/etc/firejail/chromium-browser.profile";
extraArgs = [
"--blacklist=/etc/ld-nix.so.preload"
];
};
};
};
</syntaxhighlight>

[[Category:Applications]]
[[Category:Web Browser{{#translation:}}]]

Chromium/en - Revision history

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