Substack Publication Logo Resizer256 × 256 px
Resize any image to exactly 256×256px for Substack. Free, instant, and nothing leaves your browser.
- Dimensions
- 256 × 256 px
- Aspect ratio
- 1:1
- Max file size
- No fixed limit
- Best format
- PNG
How to resize an image for Substack
Add your image
Click Choose image or drop a file into the box above. JPG, PNG and WebP all work.
Check the crop
The preset is already set to 256×256px. Drag inside the preview if you want to reposition the crop.
Download
Pick a format and click Download. You get a Substack Publication Logo at exactly 256×256px.
Substack Publication Logo size 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.
Why 256×256 matters
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.
What happens when the size is wrong
Complex logos become blobs at the small display size. Missing logos show a generic initial, making your publication look unfinished.
Best practices
- 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.
Frequently asked questions
What size should a Substack Publication Logo be?
The recommended size for a Substack Publication Logo is 256×256 pixels (1:1 aspect ratio).
How do I resize an image for Substack Publication Logo?
Upload your image to the resizer above. It will automatically crop and resize to 256×256px. Adjust the crop position if needed, then download the result. Your image never leaves your device.
Which format should I use for a Substack Publication Logo?
Substack accepts JPG, PNG. We recommend PNG — Displayed as a circle in Substack's navigation, email headers, and the publication directory.
Is my image uploaded anywhere?
No. TinyResize runs entirely in your browser. The file is read from your device, resized on your device, and downloaded from your device. Nothing is sent to a server.