How to use it
Enter the pixel size you want in Max width and height. You can fill in just one; with both, the image is scaled to fit inside that box. Images already smaller are left as they are, never enlarged. The format stays the same, and you can choose another format above to convert at the same time.
Common sizes
| Use | Suggested size |
|---|---|
| Blog post images | 1200–1600 wide |
| Online store product photos | 1000×1000 square |
| Profile pictures | 400×400 |
| Full-screen slides | 1920×1080 |
| Email attachments | 1600 wide or less |
Services change their recommended sizes from time to time, so check the guidance where you are uploading.
Keeping quality
Shrinking an image a lot in one step can break up thin lines. This page reduces it in halving steps so the result looks smooth. Enlarging a downsized image makes it blurry, so keep your originals.