{
  "slug": "background-sync",
  "name": "Background Sync",
  "category": "Capabilities",
  "summary": "Defer actions until the user has stable connectivity via the service worker.",
  "name_zh": "Background Sync（后台同步）",
  "summary_zh": "通过 Service Worker 把操作推迟到用户网络稳定后再执行。",
  "spec_url": "https://wicg.github.io/background-sync/spec/",
  "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/API/Background_Synchronization_API",
  "confidence": "high",
  "verified_at": "2026-10-03",
  "support": [
    {
      "target": "Chrome (Desktop)",
      "os": "Desktop",
      "browser": "chrome",
      "engine": "blink",
      "status": "yes",
      "version_added": "49",
      "version_full": "49",
      "applicable": true,
      "notes": [],
      "source": "https://raw.githubusercontent.com/mdn/browser-compat-data/main/api/SyncManager.json",
      "verified_at": "2026-09-11",
      "confidence": "high"
    },
    {
      "target": "Chrome (Android)",
      "os": "Android",
      "browser": "chrome",
      "engine": "blink",
      "status": "yes",
      "version_added": "49",
      "version_full": "49",
      "applicable": true,
      "notes": [
        {
          "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/api/SyncManager.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": "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/api/SyncManager.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/api/SyncManager.json",
      "verified_at": "2026-10-03",
      "confidence": "high"
    },
    {
      "target": "Firefox (Android)",
      "os": "Android",
      "browser": "firefox",
      "engine": "gecko",
      "status": "no",
      "version_added": null,
      "version_full": null,
      "applicable": true,
      "notes": [
        {
          "text": "No Firefox for Android support is recorded in browser-compat-data.",
          "text_zh": "browser-compat-data 未记录 Firefox for Android 的支持。"
        },
        {
          "text": "Derived by browser-compat-data mirroring from Firefox.",
          "text_zh": "由 browser-compat-data 镜像自 Firefox 的数据推导。"
        }
      ],
      "source": "https://raw.githubusercontent.com/mdn/browser-compat-data/main/api/SyncManager.json",
      "verified_at": "2026-10-03",
      "confidence": "high"
    },
    {
      "target": "Safari (macOS)",
      "os": "macOS",
      "browser": "safari",
      "engine": "webkit",
      "status": "no",
      "version_added": null,
      "version_full": null,
      "applicable": true,
      "notes": [
        {
          "text": "Implementation tracking: https://webkit.org/b/182565.",
          "text_zh": "实现跟踪：https://webkit.org/b/182565。"
        }
      ],
      "source": "https://raw.githubusercontent.com/mdn/browser-compat-data/main/api/SyncManager.json",
      "verified_at": "2026-10-03",
      "confidence": "high"
    },
    {
      "target": "Safari (iOS)",
      "os": "iOS",
      "browser": "safari",
      "engine": "webkit",
      "status": "no",
      "version_added": null,
      "version_full": null,
      "applicable": true,
      "notes": [
        {
          "text": "Implementation tracking: https://webkit.org/b/182565.",
          "text_zh": "实现跟踪：https://webkit.org/b/182565。"
        },
        {
          "text": "Derived by browser-compat-data mirroring from Safari.",
          "text_zh": "由 browser-compat-data 镜像自 Safari 的数据推导。"
        }
      ],
      "source": "https://raw.githubusercontent.com/mdn/browser-compat-data/main/api/SyncManager.json",
      "verified_at": "2026-10-03",
      "confidence": "high"
    },
    {
      "target": "Samsung Internet",
      "os": "Android",
      "browser": "samsung",
      "engine": "blink",
      "status": "yes",
      "version_added": "5.0",
      "version_full": "5.0",
      "applicable": true,
      "notes": [
        {
          "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/api/SyncManager.json",
      "verified_at": "2026-10-03",
      "confidence": "high"
    },
    {
      "target": "WebView (Android)",
      "os": "Android",
      "browser": "webview",
      "engine": "blink",
      "status": "no",
      "version_added": null,
      "version_full": null,
      "applicable": true,
      "notes": [
        {
          "text": "Implementation tracking: https://crbug.com/40449796.",
          "text_zh": "实现跟踪：https://crbug.com/40449796。"
        }
      ],
      "source": "https://raw.githubusercontent.com/mdn/browser-compat-data/main/api/SyncManager.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>"
}