Substack Publication Logo Resizer

What matters

Substack Publication Logo dimensions at a glance

Substack publication logos display as small circles in navigation, email headers, and the Substack directory. A 256×256 source covers all contexts.

The logo appears in every email you send and at the top of your publication. It's your newsletter's visual identity and subscriber recognition signal.

Complex logos become blobs at the small display size. Missing logos show a generic initial, making your publication look unfinished.

Best practices

Use the crop intentionally

• Use a simple mark that's recognizable at small sizes.
• Center the design for the circular crop.
• Consider how it looks as an email sender icon.