Free Substack Cover Resizer

Substack Cover Resizer

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

🖼️

Drop your images here

JPG, PNG, WEBP, AVIF, HEIC, GIF, BMP, TIFF · Up to 50MB per file

Frequently asked questions

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

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

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