Free Substack Cover Resizer

Substack Cover Resizer

Resize any image to the exact Substack Cover size (1100px newsletter cover) for gratis. No upload, no watermark, no signup.

Frequently asked questions

What is the Substack Cover size?

The recommended Substack Cover size is 1100px on the longest side for newsletter cover.

Can I resize for free?

Yes — upload your image and set the custom width to resize instantly.

Will quality stay high?

Yes — the tool keeps the best possible quality for the target dimensions.

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