Resize Images to 512×512
Resize your images to 512×512 pixels for use as a favicon or web app icon. This is the recommended size for PWA icons and the largest common favicon size.
Image resizer
Drag and drop files or folders here, or
All image formats — up to 50MB each, or 50 from a folder
Ctrl+Z undo · Ctrl+Y redo
Leave one blank to auto-calculate from aspect ratio.
Preserve camera info, GPS, and other metadata
Keyboard Shortcuts
General
When to Use Favicon
512×512 is the standard for Progressive Web App (PWA) icons, Android home screen icons, and Windows tile images. Browsers downscale to 16×16, 32×32, etc. as needed.
Tips for Favicon Images
Use PNG for favicons to preserve transparency. Keep the design simple and recognizable at small sizes. Test at 16×16 and 32×32 to ensure readability.
Frequently Asked Questions
Why 512×512 instead of 16×16?
Modern browsers and platforms use multiple sizes. Providing a 512×512 source lets the browser or OS downscale to whatever size it needs (16, 32, 48, 192, 512).
Should favicons be square?
Yes. Favicons should always be square (1:1 aspect ratio). Non-square images will be displayed with padding or cropped by the browser.