You can remove the default "Powered by Squarespace" Text Block from your site using the footer editor. This text is optional and you’re welcome to remove it and replace it with other content.
Step 1 - Remove the Text Block
Hover over the footer and click Edit.
Note: If you don't see the Edit annotation, collapse the site preview by clicking the arrow in the top-left corner of your site, or pressing the Escape key. Annotations are also not available while in the Style Editor.
In the footer editor, click and drag the "Powered by Squarespace" Text Block into the trash icon that appears. Depending on your template, it'll look something like this:
Step 3 - Remove the navigation link (Shift template only)
If you’re using the Shift template, you’ll see that the “Powered by Squarespace” text isn't in a Text Block. Instead, it's a navigation link in Secondary Navigation.
To remove this, hover over the link title and click the recycle bin icon that appears.
Step 4 - Add a new block (optional)
After removing the Text Block, you can add a new block in its place.
Step 5 - Save
Click Save to publish your changes.