{{book.project.name}} provides theme support for web pages and emails. This allows customizing the look and feel of end-user facing pages so they can be
NOTE: To set the theme for the `master` admin console you need to set the admin console theme for the `master` realm. To see the changes to the admin console
For more information on where the `standalone.xml`, `standalone-ha.xml`, or `domain.xml` file resides see the link:{{book.installguide.link}}[{{book.installguide.name}}].
{{book.project.name}} comes bundled with default themes in the server's root `themes` directory. To simplify upgrading you should not edit the bundled themes
directly. Instead create your own theme that extends one of the bundle themes.
Unless you plan to replace every single page you should extend another theme. Most likely you will want to extend the {{book.project.name}} theme, but you could also
consider extending the base theme if you are significantly changing the look and feel of the pages. The base theme primarily consists of HTML templates and
message bundles, while the {{book.project.name}} theme primarily contains images and stylesheets.
When extending a theme you can override individual resources (templates, stylesheets, etc.). If you decide to override HTML templates bear in mind that you may
need to update your custom template when upgrading to a new release.
While creating a theme it's a good idea to disable caching as this makes it possible to edit theme resources directly from the `themes` directory without
To create a new theme start by creating a new directory in the `themes` directory. The name of the directory becomes the name of the theme. For example to
create a theme called `mytheme` create the directory `themes/mytheme`.
For each type create a file `theme.properties` which allows setting some configuration for the theme. For example to configure the theme `themes/mytheme/login`
that we just created to extend the base theme and import some common resources create the file `themes/mytheme/login/theme.properties` with following contents:
There are a list of properties that can be used to change the css class used for certain element types. For a list of these properties look at the theme.properties
file in the corresponding type of the keycloak theme (`themes/keycloak/<THEME TYPE>/theme.properties`).
You can also add your own custom properties and use them from custom templates.
==== Stylesheets
A theme can have one or more stylesheets, to add a stylesheet create a file in the `<THEME TYPE>/resources/css` directory of your theme. Then add it to the `styles`
property in `theme.properties`.
For example to add `styles.css` to the `mytheme` create `themes/mytheme/login/resources/css/styles.css` with the following content:
To see the changes open the login page for your realm. You will notice that the only styles being applied are those from your custom stylesheet. To include the
styles from the parent theme you need to load the styles from that theme as well. Do this by editing `themes/mytheme/login/theme.properties` and changing `styles`
A theme can have one or more scripts, to add a script create a file in the `<THEME TYPE>/resources/js` directory of your theme. Then add it to the `scripts`
property in `theme.properties`.
For example to add `script.js` to the `mytheme` create `themes/mytheme/login/resources/js/script.js` with the following content:
To make images available to the theme add them to the `<THEME TYPE>/resources/img` directory of your theme. These can be used from within stylesheets or
Text in the templates are loaded from message bundles. A theme that extends another theme will inherit all messages from the parents message bundle and you can
override individual messages by adding `<THEME TYPE>/messages/messages_en.properties` to your theme.
Within a message values like `{0}` and `{1}` are replaced with arguments when the message is used. For example {0} in `Log in to {0}` is replaced with the name
{{book.project.name}} supports internationalization. To enable internationalization for a realm see {{book.adminguide.link}}[{{book.adminguide.name}}]. This
To add a new language create the file `<THEME TYPE>/messages/messages_<LOCALE>` in the directory of your theme. Then add it to the `locales` property in
`<THEME TYPE>/theme.properties`. For a language to be available to users the realms `login`, `account` and `email` theme has to support the language, so you
Finally you need to add a translation for the language selector. This is done by adding a message to the English translation. To do this add the following to
`themes/mytheme/account/messages/messages_en.properties` and `themes/mytheme/login/messages/messages_en.properties`:
By default message properties files should be encoded using ISO-8859-1. It's also possible to specify the encoding using a special header. For example to use UTF-8 encoding:
{{book.project.name}} uses http://freemarker.org[Freemarker Templates] in order to generate HTML. You can override individual templates in your own theme by
creating `<THEME TYPE>/<TEMPLATE>.ftl`. For a list of templates used see `themes/base/<THEME TYPE>`.
When creating a custom template it is a good idea to copy the template from the base theme to your own theme, then applying the modifications you need. Bear in
mind when upgrading to a new version of {{book.project.name}} you may need to update your custom templates to apply changes to the original template if
applicable.
For example to create a custom login form for the `mytheme` theme copy `themes/base/login/login.ftl` to `themes/mytheme/login` and open it in an editor.
After the first line (<#import ...>) add `<h1>HELLO WORLD!</h1>` like so:
To edit the subject and contents for emails, for example password recovery email, add a message bundle to the `email` type of your theme. There's three messages for each email. One for the subject, one for the plain text body and one for the html body.
To see all emails available take a look at `themes/base/email/messages/messages_en.properties`.
For example to change the password recovery email for the `mytheme` theme create `themes/mytheme/email/messages/messages_en.properties` with the following
Themes can be deployed to {{book.project.name}} by copying the theme directory to `themes` or it can be deployed as an archive. During development copying the
theme to the `themes` directory, but in production you may want to consider using an `archive`. An `archive` makes it simpler to have a versioned copy of
the theme, especially when you have multiple instances of {{book.project.name}} for example with clustering.
To deploy a theme as an archive you need to create a ZIP archive with the theme resources. You also need to add a file `META-INF/keycloak-themes.json` to the
The deploy the archive to {{book.project.name}} you can either manually create a module in `modules` or use the `jboss-cli` command. It's simplest to use
`jboss-cli` as it creates the required directories and module descriptor for you.
To manually create the module create the directory `modules/org/keycloak/example/mytheme/main`, copy `mytheme.zip` to this directory and create the file
`modules/org/keycloak/example/mytheme/main/module.xml` with the contents:
For more information on where the `standalone.xml`, `standalone-ha.xml`, or `domain.xml` file resides see the link:{{book.installguide.link}}[{{book.installguide.name}}].
