Add or change your logo or channel icon in News Publisher
After you add a logo and channel icon, you can change them at any time.
Go to icloud.com, sign in, then click News Publisher.
Go to Settings > Branding > Logos.
Drag your logo or channel icon to their respective field, then click Save.
If the preview of the logo or channel icon isn’t legible, it won’t look right in your articles. Be sure your logo and channel icon adhere to the logo and channel icon specifications.