1. Create a logo image with your website name and transparent background according to the dimensions.

Or edit the default logo image¹⁾.

2. Upload the newly-created image via Admin Area > Appearance > Customize > Theme Settings > the Logo image field.

For example, you need to change the logo image for the Friends theme.

1. Download the .psd logo file
2. Unarchive it.
3. Open it with an image editor.
4. Make changes and save the edited file.
5. Go to Admin Area > Appearance > Customize > Theme Settings.
6. Find the Logo image field and click Browse.
7. Upload the edited logo image and click Save.

To replace the mobile logo, go to Admin Area > Appearance > Customize Theme settings > Mobile and upload the image to the Mobile logo field.

Here are the default logo image dimensions:

Width: 186px

Height: 186px