{ "caniuse": [ "speech-synthesis" ], "compat_features": [ "api.SpeechSynthesis", "api.SpeechSynthesis.cancel", "api.SpeechSynthesis.getVoices", "api.SpeechSynthesis.pause", "api.SpeechSynthesis.paused", "api.SpeechSynthesis.pending", "api.SpeechSynthesis.resume", "api.SpeechSynthesis.speak", "api.SpeechSynthesis.speaking", "api.SpeechSynthesis.voiceschanged_event", "api.SpeechSynthesisErrorEvent", "api.SpeechSynthesisErrorEvent.SpeechSynthesisErrorEvent", "api.SpeechSynthesisErrorEvent.error", "api.SpeechSynthesisEvent", "api.SpeechSynthesisEvent.SpeechSynthesisEvent", "api.SpeechSynthesisEvent.charIndex", "api.SpeechSynthesisEvent.charLength", "api.SpeechSynthesisEvent.elapsedTime", "api.SpeechSynthesisEvent.name", "api.SpeechSynthesisEvent.utterance", "api.SpeechSynthesisUtterance", "api.SpeechSynthesisUtterance.SpeechSynthesisUtterance", "api.SpeechSynthesisUtterance.boundary_event", "api.SpeechSynthesisUtterance.end_event", "api.SpeechSynthesisUtterance.error_event", "api.SpeechSynthesisUtterance.lang", "api.SpeechSynthesisUtterance.mark_event", "api.SpeechSynthesisUtterance.pause_event", "api.SpeechSynthesisUtterance.pitch", "api.SpeechSynthesisUtterance.rate", "api.SpeechSynthesisUtterance.resume_event", "api.SpeechSynthesisUtterance.start_event", "api.SpeechSynthesisUtterance.text", "api.SpeechSynthesisUtterance.voice", "api.SpeechSynthesisUtterance.volume", "api.SpeechSynthesisVoice", "api.SpeechSynthesisVoice.default", "api.SpeechSynthesisVoice.lang", "api.SpeechSynthesisVoice.localService", "api.SpeechSynthesisVoice.name", "api.SpeechSynthesisVoice.voiceURI", "api.Window.speechSynthesis" ], "description": "The SpeechSynthesis API converts text to speech with artificial voices.", "description_html": "The SpeechSynthesis API converts text to speech with artificial voices.", "group": [ "speech" ], "kind": "feature", "name": "Speech synthesis", "spec": [ "https://webaudio.github.io/web-speech-api/#tts-section" ], "status": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "by_compat_key": { "api.SpeechSynthesis": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesis.cancel": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesis.getVoices": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesis.pause": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesis.paused": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesis.pending": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesis.resume": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesis.speak": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesis.speaking": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesis.voiceschanged_event": { "baseline": "high", "baseline_high_date": "2025-03-12", "baseline_low_date": "2022-09-12", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "16", "safari_ios": "16" } }, "api.SpeechSynthesisErrorEvent": { "baseline": "high", "baseline_high_date": "≤2021-04-02", "baseline_low_date": "≤2018-10-02", "support": { "chrome": "33", "chrome_android": "33", "edge": "≤18", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesisErrorEvent.SpeechSynthesisErrorEvent": { "baseline": "high", "baseline_high_date": "2025-03-12", "baseline_low_date": "2022-09-12", "support": { "chrome": "71", "chrome_android": "71", "edge": "79", "firefox": "49", "firefox_android": "62", "safari": "16", "safari_ios": "16" } }, "api.SpeechSynthesisErrorEvent.error": { "baseline": "high", "baseline_high_date": "≤2021-04-02", "baseline_low_date": "≤2018-10-02", "support": { "chrome": "33", "chrome_android": "33", "edge": "≤18", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesisEvent": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesisEvent.SpeechSynthesisEvent": { "baseline": "high", "baseline_high_date": "2025-03-12", "baseline_low_date": "2022-09-12", "support": { "chrome": "71", "chrome_android": "71", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "16", "safari_ios": "16" } }, "api.SpeechSynthesisEvent.charIndex": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesisEvent.charLength": { "baseline": "high", "baseline_high_date": "2025-03-12", "baseline_low_date": "2022-09-12", "support": { "chrome": "77", "chrome_android": "77", "edge": "15", "firefox": "53", "firefox_android": "62", "safari": "16", "safari_ios": "16" } }, "api.SpeechSynthesisEvent.elapsedTime": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesisEvent.name": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesisEvent.utterance": { "baseline": "high", "baseline_high_date": "2025-03-12", "baseline_low_date": "2022-09-12", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "16", "safari_ios": "16" } }, "api.SpeechSynthesisUtterance": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesisUtterance.SpeechSynthesisUtterance": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesisUtterance.boundary_event": { "baseline": false, "support": { "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesisUtterance.end_event": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesisUtterance.error_event": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesisUtterance.lang": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesisUtterance.mark_event": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesisUtterance.pause_event": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesisUtterance.pitch": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesisUtterance.rate": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesisUtterance.resume_event": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesisUtterance.start_event": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesisUtterance.text": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesisUtterance.voice": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesisUtterance.volume": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesisVoice": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesisVoice.default": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesisVoice.lang": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesisVoice.localService": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesisVoice.name": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.SpeechSynthesisVoice.voiceURI": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "api.Window.speechSynthesis": { "baseline": "high", "baseline_high_date": "2021-03-05", "baseline_low_date": "2018-09-05", "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } } }, "support": { "chrome": "33", "chrome_android": "33", "edge": "14", "firefox": "49", "firefox_android": "62", "safari": "7", "safari_ios": "7" } }, "id": "speech-synthesis", "groups": [ "speech" ], "specs": [ { "url": "https://webaudio.github.io/web-speech-api/#tts-section", "seriesComposition": "full", "shortname": "speech-api", "series": { "shortname": "speech-api", "currentSpecification": "speech-api", "title": "Web Speech API", "shortTitle": "Web Speech API", "nightlyUrl": "https://webaudio.github.io/web-speech-api/" }, "organization": "W3C", "groups": [ { "name": "Audio Community Group", "url": "https://www.w3.org/community/audio-comgp/" } ], "nightly": { "url": "https://webaudio.github.io/web-speech-api/", "status": "Draft Community Group Report", "alternateUrls": [], "repository": "https://github.com/WebAudio/web-speech-api", "sourcePath": "index.bs", "filename": "index.html" }, "title": "Web Speech API", "source": "spec", "shortTitle": "Web Speech API", "categories": [ "browser" ], "standing": "good", "fragment": "tts-section" } ], "mdnUrls": [ { "slug": "Web/API/Web_Speech_API", "title": "Web Speech API", "anchor": null, "url": "https://developer.mozilla.org/docs/Web/API/Web_Speech_API" } ], "standardPositions": [ { "vendor": "mozilla", "url": "https://github.com/mozilla/standards-positions/issues/170", "position": "positive", "concerns": [] } ], "hasNegativeStandardPosition": false, "stateOfSurveys": [], "chromeUseCounters": { "percentageOfPageLoad": 0.00033942, "url": "https://chromestatus.com/metrics/webfeature/timeline/popularity/64" }, "interop": [], "wpt": { "url": "https://wpt.fyi/results?q=feature:speech-synthesis" }, "developerSignals": null, "bugs": { "chrome": [ "https://bugs.chromium.org/p/chromium/issues/detail?id=1224942", "https://bugs.chromium.org/p/chromium/issues/detail?id=923556", "https://crbug.com/812767", "http://crbug.com/171887" ] }, "useCases": null, "baselineLowDateAsObject": "2018-09-05T00:00:00.000Z", "baselineHighDateAsObject": "2021-03-05T00:00:00.000Z" }