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Illustration of a happy Shiba Inu dog wearing a traditional Japanese kimono. The dog is centered within a circular frame, adorned with decorative patterns that include waves and stripes, indicative of a Japanese aesthetic. The Shiba Inu is smiling with its tongue out, suggesting a cheerful and playful demeanor. The kimono features bold red and white accents, complementing the dog's tan and white fur.

Headless UI component collection for Phoenix, focused on semantics and accessibility.

For a full list of available components, please refer to the documentation.


The package can be installed by adding doggo to your list of dependencies in mix.exs:

def deps do
    {:doggo, "~> 0.5.0"}


To allow Doggo to translate certain strings such as form field errors with Gettext, set your Gettext module in config/config.exs:

config :doggo, gettext: MyApp.Gettext

This only affects the input component. If you prefer, you can pass the gettext module as an attribute to the component instead.


The library is equipped with story modules for Phoenix Storybook. After you followed the installation instructions of Phoenix Storybook, you can configure a storybook module for Doggo in your application as follows:

defmodule MyAppWeb.Storybook.Doggo do
  use PhoenixStorybook,
    otp_app: :my_app_web,
    content_path: Path.join(:code.priv_dir(:doggo), "/storybook"),
    title: "Doggo Storybook",
    css_path: "/assets/storybook.css",
    js_path: "/assets/storybook.js",
    sandbox_class: "my-app-web"

The important option here is content_path, which points to the storybook directory in the priv folder of Doggo. Adjust the rest of the option to the needs of your application.

In your router, add the Doggo storybook as a second storybook and change the path of your application storybook to avoid path conflicts.

scope "/", MyAppWeb do
  pipe_through :browser

  live_storybook("/storybook/app", backend_module: MyAppWeb.Storybook)

    backend_module: MyAppWeb.Storybook.Doggo,
    session_name: :live_storybook_doggo,
    pipeline: false


If you use PurgeCSS, you will need to add deps/doggo/lib/doggo.ex to your PurgeCSS configuration.

Doggo also uses modifier CSS classes to alter the appearance of components. The class names are generated dynamically, which means PurgeCSS won't be able to find them in the source code. You can use mix dog.modifiers to save a list of all modifier class names to a file:

mix dog.modifiers -o assets/modifiers.txt

Add the generated file to your PurgeCSS configuration as well.

Design decisions

  • Favor semantic HTML elements over CSS classes for structure and clarity.
  • Adhere to accessibility guidelines with appropriate ARIA attributes and roles.
  • Utilize semantic HTML and ARIA attributes for style bindings to states, rather than relying on CSS classes.
  • Where state or variations can not be expressed semantically, use modifier classes named .is-* or .has-*.
  • The library is designed without default styles and does not prefer any particular CSS framework.

Demo app

The repository contains a demo application that renders the plain storybook. Note that it doesn't come with any CSS, so all components will be rendered with default browser styles.

git clone
cd doggo/demo
mix setup
mix phx.server

The storybook can be accessed at http://localhost:4000.


The library is actively developed. Being in its early stages, the library may still undergo significant changes, potentially leading to breaking changes.

If you miss a component, if you have trouble with an existing component, or if a component doesn't work for you in a certain use case, please don't hesitate to open a Github issue.