2026.10.3
Home ▸ Actions

Reload themes

Use this action to reload your themes from your configuration.yamlThe configuration.yaml file is the main configuration file for Home Assistant. It lists the integrations to be loaded and their specific configurations. In some cases, the configuration needs to be edited manually directly in the configuration.yaml file. Most integrations can be configured in the UI. [Learn more] file after you edit them. This applies your changes without restarting Home Assistant.

If the theme that is currently set no longer exists after the reload, Home Assistant falls back to the standard theme.

Using this action from the user interface

If you prefer building automations and scripts visually, Home Assistant walks you through this action step by step. You pick what to target, tweak a few options, and save. No YAML knowledge required.

To reload themes from an automation or a script:

  1. Go to Settings > Automations & scenes.
  2. Open an existing automation or script, or select Create automation > Create new automation.
  3. If you’re setting up a new automation, add a trigger in the When section. Scripts don’t need a trigger. They run when something else calls them.
  4. In the Then do section, select Add action.
  5. Search for and select Home Assistant frontend: Reload themes.
  6. Select Save.

Options in the UI

This action has no options.

Using this action in YAML

If you work directly in YAML, or you want to know exactly what Home Assistant does under the hood, this section has the technical reference. It lists the field names you use in YAML, their types, and which ones are required. For how an automation or a script is built in YAML, refer to Automations in YAML and Scripts.

In YAML, refer to this action as frontend.reload_themes. It takes no options:

ActionAn action makes Home Assistant do something, for example, turn on a light, send a notification, or activate a scene. Automations and scripts run a list of actions. [Learn more] 
action: frontend.reload_themes

Options in YAML

This action has no options.

Good to know

  • You usually run this action straight from Settings > Tools > Actions right after editing your themes, so you can see the result without a restart.
  • Only administrators can run this action.

Still stuck?

To test the action on its own, run it in the automation editor with Run action, and check the message that it shows. To see what the action did when the automation ran, open the trace of that run. For details, refer to Testing automations. For common problems and their solutions, refer to Troubleshooting automations.

If that doesn’t help, the Home Assistant community is quick to help: join Discord for real-time chat, post on the community forum with the action you’re calling and what you expected to happen, or share on our subreddit /r/homeassistant.

Tip

AI assistants like ChatGPT or Claude can also explain actions or suggest the right one when you describe what you want in plain language.

Related actions

Explore related actions:

  • Set theme: Sets the theme Home Assistant uses by default.