Substack Wordmark Resizer
Prepare a horizontal Substack publication wordmark at the documented minimum size of 1344×256 pixels.
Sizes, to scale
+2 more sizes below
Substack wordmark size
Substack wordmark size: At least 1344×256 px, horizontal
1344
width (px)
256
height (px)
21:4
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.
- Substack Support — Set a custom theme - Substack says publication wordmarks should be horizontal images at least 1344×256.
Prepare Substack Wordmark
Keep the publication name readable inside a shallow horizontal canvas and use transparent padding instead of a baked-in background. The website editor can scale the wordmark across layouts, so check both wide and narrow screens.
How to resize an image for Substack Wordmark?
- 1
Step 1: Choose a suitable source image
Choose a high-resolution horizontal logo, ideally with a transparent background.
- 2
Step 2: Apply the 1344×256 preset
Upload the image, choose Wordmark, and use Fit or Fill to control the crop.
- 3
Step 3: Review and upload
Download the PNG, upload it in the website editor, and inspect the header at desktop and mobile widths.
What size should a Substack wordmark be?
Substack says publication wordmarks should be horizontal images at least 1344×256 pixels.
Will the 1344×256 preset prevent every crop?
The website editor can scale the wordmark across layouts, so check both wide and narrow screens. Keep the source file so you can revise the crop if the destination changes its layout or requirements.
All Substack Image Sizes
Choose another available Substack canvas and review its source notes
Creator and Community Image Sizes
Prepare artwork for creator pages, newsletters, music releases, streaming channels, support pages, and chat communities using source-backed presets.
Substack
File tools
Convert the resized image
Need a different file format or transparent background? Choose a focused converter, then check the preview and encoded size before downloading.
Put Your Substack Wordmark Image Into a PDF
Put one image on each page, arrange the order, and create the PDF in your browser.
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