Substack Email Banner Resizer

Create a Substack email banner at the recommended 1100×220 size and export it as PNG for inbox-ready publication branding.

Sizes, to scale

  • Email Banner

    1100×220

    5:1

  • Welcome Page Cover

    600×600

    1:1

  • Social Preview Image

    1200×630

    1.9:1

+2 more sizes below

Substack email banner size

Substack email banner size: 1100×220 px PNG recommended

Substack allows a taller banner, but 1100×220 is its stated best-results size.

1100

width (px)

220

height (px)

5:1

aspect ratio

Need other dimensions? Browse all Substack sizes or use the free image resizer for any platform.

Sources

We check platform-specific dimensions against source documentation when available.

Prepare Substack Email Banner

Use a concise horizontal design that remains clear when an email client scales it down. Email clients and narrow screens can shrink the banner substantially, so avoid tiny text and test an actual email.

How to resize an image for Substack Email Banner?

  1. 1

    Step 1: Choose a suitable source image

    Choose a wide logo or banner source with enough resolution for an 1100-pixel export.

  2. 2

    Step 2: Apply the 1100×220 preset

    Upload the image, choose Email Banner, and use Fit or Fill to control the crop.

  3. 3

    Step 3: Review and upload

    Download the PNG, add it under Substack email header settings, and send yourself a test email.

FAQ

Substack Email Banner FAQ

Can't find what you're looking for? Contact support

What size should a Substack email banner be?

Substack recommends an 1100×220 PNG for the best results, while allowing taller banners.

Will the 1100×220 preset prevent every crop?

Email clients and narrow screens can shrink the banner substantially, so avoid tiny text and test an actual email. Keep the source file so you can revise the crop if the destination changes its layout or requirements.