What is Icon Conversion?
Icon conversion transforms a source image into the specialized formats and sizes that browsers, operating systems, and app stores require for favicons, home screen icons, and app icons. A favicon — short for favorite icon — is the small image that appears in browser tabs, bookmark lists, and history entries. The classic format is ICO, a Microsoft container that can hold multiple resolutions inside a single file. Modern browsers also accept PNG and SVG favicons, each with different advantages. PNG gives you sharp rasterized output at specific sizes. SVG scales to any resolution without losing quality because it is a vector format described by mathematical paths rather than a fixed pixel grid.
The landscape gets more complex when you account for mobile platforms. Apple requires a 180x180 PNG file — called an Apple touch icon — that iOS displays when a user adds your site to their home screen. Android uses a 192x192 PNG for the home screen shortcut and a 512x512 PNG for the splash screen. Android also supports adaptive icons, which separate the foreground graphic from a background layer so the operating system can apply device-specific masks — circles on Pixel phones, squircles on Samsung devices, rounded squares on others. Your foreground content needs to fit within a 66% safe zone (roughly the inner 336x336 pixels of a 512x512 canvas) to avoid clipping under any mask shape.
This tool takes a single source image and generates every icon variant you need in one pass. Upload a high-resolution square image — at least 512x512 pixels — and the tool produces ICO files with embedded 16x16, 32x32, and 48x48 bitmaps, standalone PNG files at 180x180 and 192x192 and 512x512, and an SVG version if your source is vector-compatible. Everything runs in your browser. No file ever leaves your machine, which matters when you are working with a client's unreleased logo or a proprietary brand mark.