Convert text to speech online with browser voices.
TempGBox
Text to Speech
Convert text to speech using your browser's built-in speech synthesis. Adjust voice, speed, pitch, and volume.
💡 Note:
Text to Speech uses your browser's built-in Web Speech API. Available voices depend on your operating system and browser. Chrome and Edge typically have the best voice selection.
What is Text to Speech?
Text to Speech helps with Text to Speech Online. Convert text to speech using your browser's built-in speech synthesis. Adjust voice, speed, pitch, and volume.
TempGBox keeps the workflow simple in your browser, so you can move from input to result quickly without extra software.
How to use Text to Speech
- Open Text to Speech and enter the text, value, file, or settings you want to work with.
- Review the output and adjust the available options until the result matches your use case.
- Copy, download, or reuse the final result in your workflow, content, app, or support task.
Why use TempGBox Text to Speech?
- Convert text to speech using your browser's built-in speech synthesis. Adjust voice, speed, pitch, and volume
- Useful for Text to Speech Online
- Fast browser-based workflow with no signup required
Common uses for Text to Speech
Text to Speech is useful for Text to Speech Online. It fits well into quick checks, repeated office work, development flows, content updates, and everyday browser-based problem solving.
Because the tool is available instantly on TempGBox, you can handle one-off tasks and repeated workflows without installing extra software.
FAQ
Is Text to Speech free to use?
Yes. Text to Speech on TempGBox is free to use and does not require signup before you start.
What is Text to Speech useful for?
Text to Speech is especially useful for Text to Speech Online.
Understanding Text to Speech
The Web Speech API's SpeechSynthesis interface gives browsers a built-in text-to-speech engine without requiring any server calls or API keys. Under the hood, most operating systems provide their own TTS voices — macOS uses AVSpeechSynthesizer, Windows uses SAPI/OneCore voices, Android uses its TTS engine, and ChromeOS bundles Google's voices. The browser exposes these through speechSynthesis.getVoices(), but the list is populated asynchronously on most platforms, meaning you must listen for the voiceschanged event before enumerating available options. This is one of the most common pitfalls developers encounter: calling getVoices() synchronously returns an empty array on Chrome.
Speech Synthesis Markup Language (SSML) is the W3C standard for controlling how synthesized speech sounds. SSML tags let you insert pauses (<break time="500ms"/>), change pitch and rate (<prosody rate="slow" pitch="+2st">), spell out abbreviations (<say-as interpret-as="characters">API</say-as>), and switch languages mid-sentence (<lang xml:lang="fr">bonjour</lang>). While full SSML support varies by engine, the browser SpeechSynthesis API supports a subset of prosody controls through the SpeechSynthesisUtterance properties: rate (0.1–10), pitch (0–2), and volume (0–1). Cloud TTS services like Google Cloud Text-to-Speech and Amazon Polly support full SSML including phoneme-level control via IPA notation.
Voice quality has improved dramatically since the early concatenative synthesis days, when engines stitched together pre-recorded phoneme fragments. Modern neural TTS models — WaveNet, Tacotron, VITS, and their derivatives — generate waveforms directly from text using sequence-to-sequence neural networks. These models capture prosody, emotion, and natural rhythm in ways that rule-based systems never could. Browser-native voices still vary widely: Chrome on Android often sounds noticeably more natural than desktop Firefox because Chrome ships its own neural voice data, while Firefox relies on the OS voices which may be older formant-based synthesizers.
Accessibility is the primary real-world driver for TTS technology. Screen readers like NVDA, JAWS, and VoiceOver rely on TTS engines to make digital content accessible to users with visual impairments. The Web Content Accessibility Guidelines (WCAG 2.1) recommend providing text alternatives for non-text content, and TTS extends this principle by making any text content audible. Beyond accessibility, TTS enables hands-free consumption of articles during commutes, pronunciation verification for language learners, and auditory proofreading — hearing your writing read back often catches errors that silent reading misses.
Step-by-Step Guide
- Enter or paste text into the input field. The Web Speech API handles plain text directly; most browser engines can process passages up to several thousand characters, though very long texts should be split into paragraphs for smoother playback.
- Select a voice from the dropdown. Available voices depend on your operating system and browser — Chrome typically offers Google neural voices plus OS voices, Firefox uses only OS voices, and Safari uses macOS/iOS AVSpeechSynthesizer voices. Voices are filtered by language tag (e.g., en-US, fr-FR).
- Adjust the speech rate to control how fast the text is spoken. The default rate is 1.0, with 0.5 being half speed (useful for language learning) and 1.5–2.0 suitable for speed listening. Values above 2.0 often degrade intelligibility.
- Set the pitch level to modify the tonal quality. A pitch of 1.0 is the voice's natural register, values below 1.0 produce a deeper tone, and values above 1.0 produce a higher tone. Extreme values (below 0.3 or above 1.8) can make speech sound robotic.
- Click Play to begin synthesis. The browser queues the utterance and starts playback through the default audio output. You can pause, resume, or cancel playback at any time using the corresponding controls.
- Use the Pause and Resume buttons for note-taking or comprehension breaks. The SpeechSynthesis API maintains the exact position in the text, so resuming picks up where it left off without replaying previous content.
- If you need to switch voices or change rate/pitch mid-session, cancel the current utterance and restart with new settings. The Web Speech API does not support changing parameters on an active utterance.
Real-World Use Cases
A non-native English speaker pastes a job application cover letter into the tool and listens at 0.75x speed, catching three instances of unnatural phrasing that looked correct on screen but sounded wrong when spoken aloud. They revise the sentences and re-listen to confirm the improvements.
A content manager needs to verify that product descriptions read naturally when used with voice assistants. They test each description through the TTS tool, adjusting wording where the synthesizer misplaces emphasis or mispronounces brand-specific terminology.
A student with dyslexia uses the tool to listen to assigned reading material from an online textbook. Playing the text at 1.2x speed with a preferred voice lets them absorb the material at a comfortable pace, with the ability to pause and replay difficult sections.
A developer building a voice-enabled kiosk prototype uses the tool to quickly audition different browser voices and rate/pitch combinations, identifying which voice sounds most professional for their use case before writing the integration code.
Expert Tips
Queue multiple short utterances instead of one long one. This gives you finer-grained control over pauses and lets you handle the onend event per paragraph, which is useful for highlighting the currently spoken text or implementing a "skip paragraph" feature.
Test on the target platform before shipping. The voice list, default rate behavior, and maximum text length all vary between Chrome/Windows, Chrome/macOS, Safari/iOS, and Firefox/Linux. A voice that sounds great on macOS may not exist on Windows at all.
Use the boundary event (SpeechSynthesisUtterance.onboundary) to get word-level callbacks during playback. This enables synchronized text highlighting — the event fires with the character index and word length, letting you visually track the reading position in real time.
Frequently Asked Questions
Why does getVoices() return an empty array?
On most browsers, voice data loads asynchronously after page load. You must listen for the speechSynthesis.onvoiceschanged event and call getVoices() inside that handler. Chrome on Android and desktop both exhibit this behavior. Safari on iOS is an exception — it populates voices synchronously.
Can I save the generated speech as an audio file?
The Web Speech API does not provide a way to capture the audio output as a downloadable file. The speech is rendered directly to the system audio output. To generate downloadable audio, you would need a server-side TTS service like Google Cloud Text-to-Speech, Amazon Polly, or an open-source engine like Piper or Coqui TTS.
Why do voices sound different across browsers?
Each browser may use different TTS engines. Chrome bundles Google's own voices alongside OS voices, Firefox relies exclusively on the operating system's TTS engine, and Safari uses Apple's AVSpeechSynthesizer. The same voice name (e.g., "Google US English") may not exist on Firefox, and OS voices vary significantly in quality between Windows, macOS, and Linux.
What is the maximum text length the Web Speech API supports?
There is no formal specification limit, but practical limits exist. Chrome tends to cut off utterances around 32,000 characters. Safari on iOS may stop after about 6,000 characters. For long content, split the text into paragraph-sized chunks and queue multiple SpeechSynthesisUtterance objects, using the onend event to chain them.
Does text-to-speech work offline?
It depends on the voice. Voices labeled "local" or "offline" in the voice list work without an internet connection because they use on-device synthesis. Google-branded voices in Chrome typically require an internet connection as they stream from Google servers. You can test by disabling network connectivity and checking which voices still function.
How does TTS differ from a screen reader?
A screen reader (NVDA, JAWS, VoiceOver) is a full assistive technology that interprets the entire UI — focus management, ARIA roles, form controls, navigation — and uses TTS as its audio output. Browser TTS via the SpeechSynthesis API only converts provided text strings to speech. Screen readers are for navigating interfaces; TTS is for reading content aloud.
Privacy: Text-to-speech conversion uses your browser's built-in SpeechSynthesis API and runs locally on your device. Your text is never sent to any external server. Some browser voices (marked as "network" or "remote") may stream audio from the browser vendor's servers, but the text itself is processed client-side.