Installing a prestashop theme for your store involves a few steps.
Step 1 – First, you will need to find and download a theme.
Download prestashop themes designed by Zerotheme.com.
Or you can find a theme at the prestashop theme collection.
The theme is downloaded as a *.zip package. Do not extract it. You will import it via the back office.
Step 2 – Installing the theme via the Back Office.
Log into your back office
With Prestashop 1.6
Using the left side menu, click on Themes at the Preferences.
With Prestashop 1.7
Using the left side menu, click on Theme & Logo at the IMPROVE>Design.
Click on the Add New Theme at the top right corner.
From the Import Theme page, use click the Add File button in the Import from your Computer section. Then click on Save button.
Step 3 – Activating themes in PrestaShop 1.6 & 1.7
After your theme has been installed you will be taken back to the Themes page, the theme will be listed at here.
To activate your theme, simply click on Use This Theme button.
Continue, click on Save button.
And then, click on Finish button.
Final, you can then visit your site and see the new theme in action.