Substack Publication Logo Resizer
Resize a Substack publication logo to the documented 256×256 minimum and export a PNG that can retain transparency.
Substack logo size
Substack logo size: At least 256×256 px with a transparent background
256
width (px)
256
height (px)
1:1
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.
- Substack Support — Optimal publication image dimensions - Substack lists its logo, email banner, cover, and social-preview image guidance.
Prepare Substack Publication Logo
Use a simple square mark with transparent pixels around the artwork so it works against different publication colors. Substack may display the logo much smaller than the source, so inspect thin lines and small lettering before uploading.
How to resize an image for Substack Publication Logo?
- 1
Step 1: Choose a suitable source image
Start with a transparent PNG larger than 256×256 whenever possible.
- 2
Step 2: Apply the 256×256 preset
Upload the image, choose Publication Logo, and use Fit or Fill to control the crop.
- 3
Step 3: Review and upload
Download the PNG and test it against both light and dark colors in the Substack website editor.
Substack says the logo should be at least 256×256 pixels and use a transparent background.
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
- Substack Publication Logo
- Substack Wordmark
- Substack Email Banner
- Substack Welcome Page Cover
- Substack Social Preview Image
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 Publication Logo Image Into a PDF
Put one image on each page, arrange the order, and create the PDF in your browser.
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