async function generateHotIcon() await sharp('source-logo.png') .resize(192, 192) .png( compressionLevel: 9, palette: true, quality: 85, effort: 10 // "Hot" means max compression effort ) .toFile('icon192x192.png');
"src": "/icons/icon-192x192.png", "sizes": "192x192", "type": "image/png", "purpose": "any maskable" icon192x192png hot
If "icon192x192.png" appears in your history, it usually means a website's manifest file (which tells the browser how to display the app) was loaded. async function generateHotIcon() await sharp('source-logo
A raw 192x192 PNG can be 50KB. A "hot" (optimized) version is 3-5KB. You need to strip metadata, reduce color palettes (PNG8 instead of PNG24), and use tools like pngquant or Sharp . 192) .png( compressionLevel: 9