Substack Image Size FAQ: The Definitive Guide
Hero Layout
Q: What is the Feature layout image size?
A: The featured image for the Feature layout is 642 × 362 pixels.
Q: What are the Newspaper layout image sizes?
A: The center image for the Newspaper layout is 626 × 418 pixels. Thumbnails in the left column are 282 × 188 pixels, while thumbnails in the right column are 66 × 66 pixels (an aspect ratio of 1:1).
Q: What is the Magazine layout image size?
A: The center image for the Magazine layout is 626 × 418 pixels. Thumbnails in the side columns are 282 × 188 pixels.
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Post Layout
Q: What is the List layout image size?
A: List layout thumbnails are 162 × 120 pixels. Note that these images can be hidden by making sure the “Hide images from list” box is checked.
Q: What is the Grid layout image size?
A: Thumbnail images for both the Grid post layout are 282 × 188 pixels.
Q: What is the Groups layout image size?
A: Groups layout thumbnail images are also 282 × 188 pixels.
Other Images
Q: What image size should my logo be?
A: Your logo should be at least 256 × 256 pixels. Logos have an aspect ratio of 1:1.
Q: What is the cover image size?
A: A cover image must be at least 600 × 600 pixels. However, the cover image will be scaled down to 324 × 324 at the largest. The cover image is only displayed on the welcome page.
Q: What size should in-article banner images be?
A: Substack articles are 730 pixels wide. Therefor, in-article banner images should be at least 730 pixels wide. However, it’s important to note that in-article images automatically scale down when they’re larger than that.
Q: What is the word mark image size?
A: The word mark is a stylized image version of your publication name. It’s displayed in the navigation bar at the top of your publication. The word mark should be at least 1344 × 256 pixels. The aspect ratio for a word mark is 21:4.
Q: What is the social/post preview image size?
A: Substack recommends at least 1456 × 1048 pixels, but a logo can be as small as 420 × 300 pixels. Substack claims that the aspect ratio for social preview images is 14:10, but it’s slightly off, which results in poorly cropped images when relying on ratio alone for your image sizes.
Q: What is the image size for email banners?
A: The recommended image size for email banners is 1100 × 220 pixels, although they can be taller.
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I'm having the issue that my thumbnail looks centred in some views, and then skewed in others. I'm not sure what dimensions to create in canva so it is consistently in the right size and orientation. Any tips?
How do I make an image smaller? Clicking on the arrows on the bottom right corner do nothing.