Terms of Use

Last updated: July 2026. These are the ground rules for using Quick TTS.

What Quick TTS is

Quick TTS is a free, browser-based text-to-speech tool. You paste text; your browser reads it aloud using either your device's built-in speech engine (Web Speech API) or one of the optional AI voice engines (Piper, Kokoro HQ and Supertonic HD), which run locally on your own device.

Free to use, no account needed

You don't need to sign up, pay, or install anything. We monetize the site through display advertising (via Google AdSense) so it can stay free.

What you can paste

Because all synthesis happens in your browser and we never see your text, we're not policing what you paste. That said, you're responsible for your own use of the tool. Don't use Quick TTS to:

• Produce audio that violates someone else's rights (e.g., reading copyrighted content you don't have rights to, for distribution)
• Generate harassment, threats, or content that targets a specific person unlawfully
• Impersonate real people in a deceptive way
• Produce content illegal in your jurisdiction

Common-sense stuff. If you're using it to read your own essay out loud while you proofread, or to listen to an article you're tired of reading, you're fine.

AI voice models — acceptable use

The optional "Supertonic HD" voice runs the Supertonic 3 model. Its code is MIT-licensed, but the model weights themselves — the file your browser downloads to generate audio — are licensed under the BigScience Open RAIL-M License. That license requires us to pass its use restrictions on to you, so by using the Supertonic HD voice you agree not to use it to:

• Do anything that breaks the law where you are.
• Exploit or harm minors in any way.
• Generate or spread false information, or someone's personal data, in order to harm them.
• Publish machine-generated audio in a context (bots, posts, articles) without clearly disclosing that it's machine-generated.
• Defame, disparage, or harass anyone.
• Impersonate a real person's voice or create a deepfake without their consent.
• Feed the output into a fully-automated system that makes binding legal decisions about someone.
• Discriminate against or exploit people based on protected characteristics, behavior, or vulnerabilities.
• Give medical advice or interpret medical results.
• Support predictive policing, law enforcement, or immigration/asylum decision-making.

This is a plain-language summary — the full restriction list in Attachment A of the license text is what actually controls. As with any AI voice, you own the audio you generate and you're responsible for how you use it; the model's licensor claims no rights in your output.

No warranty

Quick TTS is provided "as is." We don't guarantee it'll work on every browser, every device, or at every moment. The Web Speech API in particular is implemented differently by different browsers and operating systems, so voice quality and availability vary. Piper needs only WebAssembly and runs in any modern browser; Kokoro HQ and Supertonic HD need WebGPU and a capable GPU, and are hidden on devices without one.

We're not liable for damages arising from your use of the site to the extent allowed by law.

Third-party content

This site loads the AI voice library from jsDelivr and the model weights from Hugging Face if you enable the AI Voice feature. Those services have their own terms. Ads are served by Google AdSense and are subject to Google's policies.

Changes

These terms may change over time. The current version is always at this URL, with the date at the top.

Contact

Questions? Email hello@quick-tts.com.