How do I install and activate a theme in WordPress?

by Jax Dalton · Published 14/09/2025 · Updated 28/10/2025

Applies to: WordPress 6.x and later
Last updated: September 2025

Problem

A theme controls the design, layout, and overall appearance of your WordPress site. While WordPress comes with default themes, most site owners want to install a theme that matches their brand or provides specific features. Installing and activating a theme is one of the first steps in customizing a WordPress site.

Solution

You can install and activate themes directly from the WordPress dashboard or upload a theme if you’ve purchased or downloaded one from a third-party provider.

Step-by-step instructions

Method 1: Installing from the WordPress Theme Directory

In the WordPress dashboard, go to Appearance > Themes.
Click Add New.
Use the search bar or browse featured, popular, and latest themes.
Hover over a theme and click Preview to see how it might look.
Click Install on the theme you want.
Once installed, click Activate to apply it to your site.

Method 2: Uploading a Theme File

Download the theme’s .zip file from the provider.
In the dashboard, go to Appearance > Themes > Add New.
Click Upload Theme and select the .zip file.
Click Install Now, then Activate.

Optional methods or tools

Theme Demos and Starter Sites: Many themes include demo content you can import to quickly replicate a sample layout.
Theme Customizer or Site Editor: After activation, customize your theme’s settings under Appearance > Customize or Appearance > Editor (for block-based themes).
Child Themes: Use a child theme if you plan to customize code, ensuring updates to the parent theme won’t overwrite changes.

Best practices or tips

Always choose themes from reputable sources to ensure security and performance.
Check that the theme is regularly updated and compatible with your version of WordPress.
Preview themes on both desktop and mobile to ensure responsiveness.
Avoid switching themes frequently, as it may disrupt your site’s layout or functionality.
Consider performance — lightweight themes generally load faster and improve SEO.