Export one icon at many sizes
One icon to nine PNG sizes from 16 to 512 (favicon / app icons / PWA)
源图标
把图标拖到这里，或点击选择
PNG / JPG / WebP / SVG，≤10MB，最长边 ≤4096px
导出尺寸（PNG）
16/32/48/64 → favicon；180 → Apple 触屏图标；192/512 → PWA 与应用图标。缩小用最近邻（硬边不糊化）。
结果（勾选了几个出几个）
上传图标后点「生成全部尺寸」，这里逐档预览，可单张下载。
FAQ
Not required. A non-square picture is scaled onto a square canvas with transparent margins around it (contain), and the page states which way it went; still, a square source of 512 pixels or more is best - leftover whitespace means the icon floats inside its box, which looks off next to truly square icons.
Modern browsers and PWAs support PNG favicons, and 16/32/48/64/192 cover almost every use, so this page stays simple and outputs PNG only. If you truly need .ico (older sites, some CMS hardwire favicon.ico), use the PWA icons and splash screens page - it packs the 16, 32 and 48 PNGs verbatim into one ICO container. 180 is the common Apple touch-icon size, 512 suits app and maskable icons; for a full install bundle (manifest, maskable safe zone, iOS splash screens per device) that page covers it.
Downscaling uses nearest-neighbor sampling - no smearing, no anti-aliasing - so color blocks and logo edges stay hard, the usual stance for an icon tool. If 16 or 32 looks too grainy, thicken the source lines or simplify the details and export again.
No. Decoding, squaring, scaling and PNG encoding all run in the browser (the PNG is produced byte by byte by a hand-rolled pure-JS encoder); the picture never leaves the machine, and reloading clears everything.