This tutorial shows how to change logo for your PrestaShop store.
To change logo open your PrestaShop admin panel and go to Preferences > Appearance page.
Upload your logo image and click Save button to keep your changes.
Your logo should be saved in JPG format and called logo.jpg
In case you want to use different filename and format open header.tpl file from the themes\theme### directory of your PrestaShop installation, locate the following code:
<h1 id="logo">
<a href="{$base_dir}" title="{$shop_name|escape:'htmlall':'UTF-8'}">
<img src="{$content_dir}/themes/prestashop_sample/img/logo.jpg" alt="{$shop_name|escape:'htmlall':'UTF-8'}" />
</a>
</h1>
And replace the logo image file to your one.
For more details please check the video tutorial below