How do I delete a photo / delete a blank page?

On iOS:
To remove a photo from a page, tap on the 'X' in the corner of the page you’d like to remove.

On Android:
To remove a photo from a page, tap on the page and select the option to 'Remove'.

Deleting blank pages (both):
If you don’t want to add a different photo to the resulting blank page, you may tap on the 'X' in the corner to remove it from your album.