Contact photos in email clients, small app icons in certain mobile interfaces and profile thumbnails on older web platforms all tend to land around the same compact square dimensions. 72x72 is one of those sizes that shows up in Android icon specifications, email client contact displays and web app manifests where multiple icon sizes are required as part of a complete package. Missing this specific size in an icon set often means the platform falls back to a scaled version of something larger, which rarely looks as clean as having the right file prepared from the start.
How to Resize an Image to 72x72 pixels
Enter 72 in both the width and height fields and turn the Maintain Aspect Ratio checkbox off before processing. Leaving it on with a non-square image means one side reaches 72 while the other scales with the original shape, so the output will not be a perfect square. With it off, both dimensions are forced to exactly 72.
Simple icons and logos with clean edges work well at this size. Detailed photos lose most of their detail at 72x72 so starting with a clean, simple graphic gives a much better result. For multiple images, upload everything at once and download as a ZIP when done.
Common Uses for 72x72 Images
Android icon specifications include 72x72 as the medium density drawable size, which is why developers building icon sets for apps regularly need this dimension alongside 48x48 and 96x96. Web app manifest files that define how a progressive web app appears on a home screen also include icon sizes in this range.
Email clients like Outlook and Apple Mail display contact photos at small square dimensions and 72x72 fits cleanly into those display slots. Forum platforms and community sites that display member avatars in post sidebars also use sizes around this range.