{
  "slug": "manifest-start-url",
  "name": "Web App Manifest: start_url",
  "category": "Manifest",
  "summary": "The start_url member identifies the URL that loads when a user launches an installed PWA from the home screen or app shelf.",
  "name_zh": "Web 应用清单：start_url",
  "summary_zh": "start_url 成员指定用户从主屏幕或应用架启动已安装 PWA 时加载的 URL。",
  "spec_url": "https://www.w3.org/TR/appmanifest/#start_url-member",
  "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/Progressive_web_apps/Manifest/Reference/start_url",
  "confidence": "high",
  "verified_at": "2026-10-03",
  "support": [
    {
      "target": "Chrome (Desktop)",
      "os": "Desktop",
      "browser": "chrome",
      "engine": "blink",
      "status": "yes",
      "version_added": "39",
      "version_full": "39",
      "applicable": true,
      "notes": [
        {
          "text": "`start_url` is required for a web app to be installable.",
          "text_zh": "Web 应用可安装的前提是提供 `start_url`。"
        }
      ],
      "source": "https://raw.githubusercontent.com/mdn/browser-compat-data/main/manifests/webapp/start_url.json",
      "verified_at": "2026-10-03",
      "confidence": "high"
    },
    {
      "target": "Chrome (Android)",
      "os": "Android",
      "browser": "chrome",
      "engine": "blink",
      "status": "yes",
      "version_added": "39",
      "version_full": "39",
      "applicable": true,
      "notes": [
        {
          "text": "`start_url` is required for a web app to be installable.",
          "text_zh": "Web 应用可安装的前提是提供 `start_url`。"
        },
        {
          "text": "Derived by browser-compat-data mirroring from Chrome.",
          "text_zh": "由 browser-compat-data 镜像自 Chrome 的数据推导。"
        }
      ],
      "source": "https://raw.githubusercontent.com/mdn/browser-compat-data/main/manifests/webapp/start_url.json",
      "verified_at": "2026-10-03",
      "confidence": "high"
    },
    {
      "target": "Edge (Desktop)",
      "os": "Desktop",
      "browser": "edge",
      "engine": "blink",
      "status": "yes",
      "version_added": "79",
      "version_full": "79",
      "applicable": true,
      "notes": [
        {
          "text": "`start_url` is required for a web app to be installable.",
          "text_zh": "Web 应用可安装的前提是提供 `start_url`。"
        },
        {
          "text": "Derived by browser-compat-data mirroring from Chrome.",
          "text_zh": "由 browser-compat-data 镜像自 Chrome 的数据推导。"
        }
      ],
      "source": "https://raw.githubusercontent.com/mdn/browser-compat-data/main/manifests/webapp/start_url.json",
      "verified_at": "2026-10-03",
      "confidence": "high"
    },
    {
      "target": "Firefox (Desktop)",
      "os": "Desktop",
      "browser": "firefox",
      "engine": "gecko",
      "status": "no",
      "version_added": null,
      "version_full": null,
      "applicable": true,
      "notes": [
        {
          "text": "No Firefox support is recorded in browser-compat-data.",
          "text_zh": "browser-compat-data 未记录 Firefox 的支持。"
        }
      ],
      "source": "https://raw.githubusercontent.com/mdn/browser-compat-data/main/manifests/webapp/start_url.json",
      "verified_at": "2026-10-03",
      "confidence": "high"
    },
    {
      "target": "Firefox (Android)",
      "os": "Android",
      "browser": "firefox",
      "engine": "gecko",
      "status": "yes",
      "version_added": "79",
      "version_full": "79",
      "applicable": true,
      "notes": [],
      "source": "https://raw.githubusercontent.com/mdn/browser-compat-data/main/manifests/webapp/start_url.json",
      "verified_at": "2026-10-03",
      "confidence": "high"
    },
    {
      "target": "Safari (macOS)",
      "os": "macOS",
      "browser": "safari",
      "engine": "webkit",
      "status": "yes",
      "version_added": "17",
      "version_full": "17",
      "applicable": true,
      "notes": [],
      "source": "https://raw.githubusercontent.com/mdn/browser-compat-data/main/manifests/webapp/start_url.json",
      "verified_at": "2026-09-05",
      "confidence": "high"
    },
    {
      "target": "Safari (iOS)",
      "os": "iOS",
      "browser": "safari",
      "engine": "webkit",
      "status": "yes",
      "version_added": "11.3",
      "version_full": "11.3",
      "applicable": true,
      "notes": [],
      "source": "https://raw.githubusercontent.com/mdn/browser-compat-data/main/manifests/webapp/start_url.json",
      "verified_at": "2026-07-11",
      "confidence": "high"
    },
    {
      "target": "Samsung Internet",
      "os": "Android",
      "browser": "samsung",
      "engine": "blink",
      "status": "yes",
      "version_added": "4.0",
      "version_full": "4.0",
      "applicable": true,
      "notes": [
        {
          "text": "`start_url` is required for a web app to be installable.",
          "text_zh": "Web 应用可安装的前提是提供 `start_url`。"
        },
        {
          "text": "Derived by browser-compat-data mirroring from Chrome Android.",
          "text_zh": "由 browser-compat-data 镜像自 Chrome Android 的数据推导。"
        }
      ],
      "source": "https://raw.githubusercontent.com/mdn/browser-compat-data/main/manifests/webapp/start_url.json",
      "verified_at": "2026-10-03",
      "confidence": "high"
    },
    {
      "target": "WebView (Android)",
      "os": "Android",
      "browser": "webview",
      "engine": "blink",
      "status": "yes",
      "version_added": "39",
      "version_full": "39",
      "applicable": true,
      "notes": [
        {
          "text": "`start_url` is required for a web app to be installable.",
          "text_zh": "Web 应用可安装的前提是提供 `start_url`。"
        },
        {
          "text": "Derived by browser-compat-data mirroring from Chrome Android.",
          "text_zh": "由 browser-compat-data 镜像自 Chrome Android 的数据推导。"
        }
      ],
      "source": "https://raw.githubusercontent.com/mdn/browser-compat-data/main/manifests/webapp/start_url.json",
      "verified_at": "2026-10-03",
      "confidence": "high"
    }
  ],
  "biz_compat": [],
  "generated_by": "OpenPWA compatibility explorer",
  "licence": "CC BY 4.0",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "attribution": "OpenPWA — https://openpwa.net",
  "attribution_html": "<a href=\"https://openpwa.net\">OpenPWA</a>, <a href=\"https://creativecommons.org/licenses/by/4.0/\">CC BY 4.0</a>"
}