PWA / Web 应用图标尺寸
渐进式 Web 应用（PWA）通过 manifest.json 声明图标。以下是推荐的完整图标集。
尺寸 (px)用途是否必需
72x72旧版 Android 主屏幕可选
96x96旧版 Android 启动画面可选
128x128Chrome 网上应用店推荐
144x144Windows 8 磁贴推荐
152x152iPad 触控图标推荐
192x192Android Chrome 主屏幕必需
384x384Android Chrome 启动画面推荐
512x512PWA 启动画面 / 安装提示必需
manifest.json 示例
Copy{
"name": "My App",
"short_name": "App",
"icons": [
{ "src": "/icons/icon-72.png", "sizes": "72x72", "type": "image/png" },
{ "src": "/icons/icon-96.png", "sizes": "96x96", "type": "image/png" },
{ "src": "/icons/icon-128.png", "sizes": "128x128", "type": "image/png" },
{ "src": "/icons/icon-144.png", "sizes": "144x144", "type": "image/png" },
{ "src": "/icons/icon-152.png", "sizes": "152x152", "type": "image/png" },
{ "src": "/icons/icon-192.png", "sizes": "192x192", "type": "image/png" },
{ "src": "/icons/icon-384.png", "sizes": "384x384", "type": "image/png" },
{ "src": "/icons/icon-512.png", "sizes": "512x512", "type": "image/png" },
{ "src": "/icons/maskable-512.png", "sizes": "512x512", "type": "image/png", "purpose": "maskable" }
],
"theme_color": "#6c63ff",
"background_color": "#ffffff",
"display": "standalone"
}
提示：至少需要 192x192 和 512x512 两个尺寸才能通过 PWA 安装条件。建议额外提供一个 "purpose": "maskable" 的图标，以便在 Android 上正确适配自适应图标形状。Maskable 图标的安全区域为中心 80% 区域。