When to generate favicon sizes
Use this tool when a website, prototype, app icon, or static site needs several square PNG icon sizes from one logo or image. The result is a set of separate PNG downloads; you still need to add the files to your site and reference the appropriate icons in your HTML or web app manifest.
16x1632x3248x48180x180192x192512x512
Which PNG size should I use?
16x16, 32x32, and 48x48: use these for small browser favicon or shortcut contexts supported by your site setup. 180x180: use this for an Apple touch icon. 192x192 and 512x512: use these as common web app manifest icon sizes.
Your framework, CMS, or hosting template may request different file names or markup. This generator creates the PNGs, but it does not edit your HTML, theme, or manifest.
Worked example and checks
Start with a simple square logo, keep a transparent background, and generate all sizes. Download the 32x32 PNG for a browser favicon, the 180x180 PNG for an Apple touch icon, and the 192x192 and 512x512 PNGs for a manifest. Add only the files your site configuration uses.
Check the 16x16 and 32x32 previews carefully: fine text, thin strokes, and detailed photos can become unclear at favicon size. The tool fits the full image inside a square instead of cropping it, and it does not create an ICO file or ZIP bundle.