{
  "api": {
    "SpeechSynthesisUtterance": {
      "__compat": {
        "mdn_url": "https://developer.mozilla.org/docs/Web/API/SpeechSynthesisUtterance",
        "spec_url": "https://webaudio.github.io/web-speech-api/#speechsynthesisutterance",
        "tags": [
          "web-features:speech-synthesis"
        ],
        "support": {
          "chrome": {
            "version_added": "33"
          },
          "chrome_android": "mirror",
          "edge": {
            "version_added": "14"
          },
          "firefox": {
            "version_added": "49"
          },
          "firefox_android": {
            "version_added": "62"
          },
          "ie": {
            "version_added": false
          },
          "oculus": "mirror",
          "opera": {
            "version_added": "21"
          },
          "opera_android": {
            "version_added": false
          },
          "safari": {
            "version_added": "7"
          },
          "safari_ios": "mirror",
          "samsunginternet_android": {
            "version_added": "3.0"
          },
          "webview_android": {
            "version_added": false,
            "impl_url": "https://crbug.com/40417848"
          },
          "webview_ios": "mirror"
        },
        "status": {
          "experimental": false,
          "standard_track": true,
          "deprecated": false
        }
      },
      "SpeechSynthesisUtterance": {
        "__compat": {
          "description": "`SpeechSynthesisUtterance()` constructor",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/SpeechSynthesisUtterance/SpeechSynthesisUtterance",
          "spec_url": "https://webaudio.github.io/web-speech-api/#dom-speechsynthesisutterance-speechsynthesisutterance",
          "tags": [
            "web-features:speech-synthesis"
          ],
          "support": {
            "chrome": {
              "version_added": "33"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "14"
            },
            "firefox": {
              "version_added": "49"
            },
            "firefox_android": {
              "version_added": "62"
            },
            "ie": {
              "version_added": false
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "21"
            },
            "opera_android": {
              "version_added": false
            },
            "safari": {
              "version_added": "7"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": {
              "version_added": "3.0"
            },
            "webview_android": {
              "version_added": false
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "boundary_event": {
        "__compat": {
          "description": "`boundary` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/SpeechSynthesisUtterance/boundary_event",
          "spec_url": [
            "https://webaudio.github.io/web-speech-api/#eventdef-speechsynthesisutterance-boundary",
            "https://webaudio.github.io/web-speech-api/#dom-speechsynthesisutterance-onboundary"
          ],
          "tags": [
            "web-features:speech-synthesis"
          ],
          "support": {
            "chrome": {
              "version_added": "33",
              "partial_implementation": true,
              "notes": "The `boundary` event does not fire as expected. See [bug 40715888](https://crbug.com/40715888)."
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "14"
            },
            "firefox": {
              "version_added": "49"
            },
            "firefox_android": {
              "version_added": "62"
            },
            "ie": {
              "version_added": false
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "21"
            },
            "opera_android": {
              "version_added": false
            },
            "safari": {
              "version_added": "7"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": {
              "version_added": "3.0"
            },
            "webview_android": {
              "version_added": false
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "end_event": {
        "__compat": {
          "description": "`end` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/SpeechSynthesisUtterance/end_event",
          "spec_url": [
            "https://webaudio.github.io/web-speech-api/#eventdef-speechsynthesisutterance-end",
            "https://webaudio.github.io/web-speech-api/#dom-speechsynthesisutterance-onend"
          ],
          "tags": [
            "web-features:speech-synthesis"
          ],
          "support": {
            "chrome": {
              "version_added": "33"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "14"
            },
            "firefox": {
              "version_added": "49"
            },
            "firefox_android": {
              "version_added": "62"
            },
            "ie": {
              "version_added": false
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "21"
            },
            "opera_android": {
              "version_added": false
            },
            "safari": {
              "version_added": "7"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": {
              "version_added": "3.0"
            },
            "webview_android": {
              "version_added": false
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "error_event": {
        "__compat": {
          "description": "`error` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/SpeechSynthesisUtterance/error_event",
          "spec_url": [
            "https://webaudio.github.io/web-speech-api/#eventdef-speechsynthesisutterance-error",
            "https://webaudio.github.io/web-speech-api/#dom-speechsynthesisutterance-onerror"
          ],
          "tags": [
            "web-features:speech-synthesis"
          ],
          "support": {
            "chrome": {
              "version_added": "33"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "14"
            },
            "firefox": {
              "version_added": "49"
            },
            "firefox_android": {
              "version_added": "62"
            },
            "ie": {
              "version_added": false
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "21"
            },
            "opera_android": {
              "version_added": false
            },
            "safari": {
              "version_added": "7"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": {
              "version_added": "3.0"
            },
            "webview_android": {
              "version_added": false
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "lang": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/SpeechSynthesisUtterance/lang",
          "spec_url": "https://webaudio.github.io/web-speech-api/#dom-speechsynthesisutterance-lang",
          "tags": [
            "web-features:speech-synthesis"
          ],
          "support": {
            "chrome": {
              "version_added": "33"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "14"
            },
            "firefox": {
              "version_added": "49"
            },
            "firefox_android": {
              "version_added": "62"
            },
            "ie": {
              "version_added": false
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "21"
            },
            "opera_android": {
              "version_added": false
            },
            "safari": {
              "version_added": "7"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": {
              "version_added": "3.0"
            },
            "webview_android": {
              "version_added": false
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "mark_event": {
        "__compat": {
          "description": "`mark` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/SpeechSynthesisUtterance/mark_event",
          "spec_url": [
            "https://webaudio.github.io/web-speech-api/#eventdef-speechsynthesisutterance-mark",
            "https://webaudio.github.io/web-speech-api/#dom-speechsynthesisutterance-onmark"
          ],
          "tags": [
            "web-features:speech-synthesis"
          ],
          "support": {
            "chrome": {
              "version_added": "33"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "14"
            },
            "firefox": {
              "version_added": "49"
            },
            "firefox_android": {
              "version_added": "62"
            },
            "ie": {
              "version_added": false
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "21"
            },
            "opera_android": {
              "version_added": false
            },
            "safari": {
              "version_added": "7"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": {
              "version_added": "3.0"
            },
            "webview_android": {
              "version_added": false
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "pause_event": {
        "__compat": {
          "description": "`pause` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/SpeechSynthesisUtterance/pause_event",
          "spec_url": [
            "https://webaudio.github.io/web-speech-api/#eventdef-speechsynthesisutterance-pause",
            "https://webaudio.github.io/web-speech-api/#dom-speechsynthesisutterance-onpause"
          ],
          "tags": [
            "web-features:speech-synthesis"
          ],
          "support": {
            "chrome": {
              "version_added": "33"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "14"
            },
            "firefox": {
              "version_added": "49"
            },
            "firefox_android": {
              "version_added": "62"
            },
            "ie": {
              "version_added": false
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "21"
            },
            "opera_android": {
              "version_added": false
            },
            "safari": {
              "version_added": "7"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": {
              "version_added": "3.0"
            },
            "webview_android": {
              "version_added": false
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "pitch": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/SpeechSynthesisUtterance/pitch",
          "spec_url": "https://webaudio.github.io/web-speech-api/#dom-speechsynthesisutterance-pitch",
          "tags": [
            "web-features:speech-synthesis"
          ],
          "support": {
            "chrome": {
              "version_added": "33"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "14"
            },
            "firefox": {
              "version_added": "49"
            },
            "firefox_android": {
              "version_added": "62"
            },
            "ie": {
              "version_added": false
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "21"
            },
            "opera_android": {
              "version_added": false
            },
            "safari": {
              "version_added": "7"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": {
              "version_added": "3.0"
            },
            "webview_android": {
              "version_added": false
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "rate": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/SpeechSynthesisUtterance/rate",
          "spec_url": "https://webaudio.github.io/web-speech-api/#dom-speechsynthesisutterance-rate",
          "tags": [
            "web-features:speech-synthesis"
          ],
          "support": {
            "chrome": {
              "version_added": "33"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "14"
            },
            "firefox": {
              "version_added": "49"
            },
            "firefox_android": {
              "version_added": "62"
            },
            "ie": {
              "version_added": false
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "21"
            },
            "opera_android": {
              "version_added": false
            },
            "safari": {
              "version_added": "7"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": {
              "version_added": "3.0"
            },
            "webview_android": {
              "version_added": false
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "resume_event": {
        "__compat": {
          "description": "`resume` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/SpeechSynthesisUtterance/resume_event",
          "spec_url": [
            "https://webaudio.github.io/web-speech-api/#eventdef-speechsynthesisutterance-resume",
            "https://webaudio.github.io/web-speech-api/#dom-speechsynthesisutterance-onresume"
          ],
          "tags": [
            "web-features:speech-synthesis"
          ],
          "support": {
            "chrome": {
              "version_added": "33"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "14"
            },
            "firefox": {
              "version_added": "49"
            },
            "firefox_android": {
              "version_added": "62"
            },
            "ie": {
              "version_added": false
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "21"
            },
            "opera_android": {
              "version_added": false
            },
            "safari": {
              "version_added": "7"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": {
              "version_added": "3.0"
            },
            "webview_android": {
              "version_added": false
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "start_event": {
        "__compat": {
          "description": "`start` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/SpeechSynthesisUtterance/start_event",
          "spec_url": [
            "https://webaudio.github.io/web-speech-api/#eventdef-speechsynthesisutterance-start",
            "https://webaudio.github.io/web-speech-api/#dom-speechsynthesisutterance-onstart"
          ],
          "tags": [
            "web-features:speech-synthesis"
          ],
          "support": {
            "chrome": {
              "version_added": "33"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "14"
            },
            "firefox": {
              "version_added": "49"
            },
            "firefox_android": {
              "version_added": "62"
            },
            "ie": {
              "version_added": false
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "21"
            },
            "opera_android": {
              "version_added": false
            },
            "safari": {
              "version_added": "7"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": {
              "version_added": "3.0"
            },
            "webview_android": {
              "version_added": false
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "text": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/SpeechSynthesisUtterance/text",
          "spec_url": "https://webaudio.github.io/web-speech-api/#dom-speechsynthesisutterance-text",
          "tags": [
            "web-features:speech-synthesis"
          ],
          "support": {
            "chrome": {
              "version_added": "33"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "14"
            },
            "firefox": {
              "version_added": "49"
            },
            "firefox_android": {
              "version_added": "62"
            },
            "ie": {
              "version_added": false
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "21"
            },
            "opera_android": {
              "version_added": false
            },
            "safari": {
              "version_added": "7"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": {
              "version_added": "3.0"
            },
            "webview_android": {
              "version_added": false
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "voice": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/SpeechSynthesisUtterance/voice",
          "spec_url": "https://webaudio.github.io/web-speech-api/#dom-speechsynthesisutterance-voice",
          "tags": [
            "web-features:speech-synthesis"
          ],
          "support": {
            "chrome": {
              "version_added": "33"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "14"
            },
            "firefox": {
              "version_added": "49"
            },
            "firefox_android": {
              "version_added": "62"
            },
            "ie": {
              "version_added": false
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "21"
            },
            "opera_android": {
              "version_added": false
            },
            "safari": {
              "version_added": "7"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": {
              "version_added": "3.0"
            },
            "webview_android": {
              "version_added": false
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "volume": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/SpeechSynthesisUtterance/volume",
          "spec_url": "https://webaudio.github.io/web-speech-api/#dom-speechsynthesisutterance-volume",
          "tags": [
            "web-features:speech-synthesis"
          ],
          "support": {
            "chrome": {
              "version_added": "33"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "14"
            },
            "firefox": {
              "version_added": "49"
            },
            "firefox_android": {
              "version_added": "62"
            },
            "ie": {
              "version_added": false
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "21"
            },
            "opera_android": {
              "version_added": false
            },
            "safari": {
              "version_added": "7"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": {
              "version_added": "3.0"
            },
            "webview_android": {
              "version_added": false
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      }
    }
  }
}