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Text to Speech

Convert text to natural-sounding speech instantly

HD AI voices Free, no signup
Humanize Summarize TTS
HD AI Voice Premium
OpenAI TTS-HD
Voice
Speed: 1.0x

HD audio will appear here

Free Browser Voice
Your Text 0 characters
SMS 160 Twitter 280
for [pause] markers
Result

Enter text and click Play to hear it spoken

Use [pause] markers to add breaks

How It Works

  1. 1

    Enter or Paste Your Text

    Type or paste anything you want to hear spoken. Use [pause] markers anywhere in the text to add breaks between sections — great for presentations or narration.

  2. 2

    Pick a Voice and Adjust Settings

    Star-marked voices are higher quality (neural/cloud voices from Google or Microsoft). Adjust speed and pitch manually, or use a preset — Normal, Slow & Clear, Fast, or Dramatic. Use Compare to audition 3 voices back-to-back.

  3. 3

    Play or Export

    Click Play to hear the speech with live word highlighting. Save your text as a .txt file, or export as SSML markup to use directly with ElevenLabs, Google Cloud TTS, or Amazon Polly for studio-quality audio.

Frequently Asked Questions

How does text to speech work?
We use your browser's built-in Web Speech API to convert text to spoken audio. No data is sent to any server — everything runs locally on your device.
Can I save the text?
Yes. Click "Save Text" to download a .txt file, or use "Export SSML" to generate SSML markup you can paste directly into ElevenLabs, Google Cloud TTS, or Amazon Polly for studio-quality audio.
What voices are available?
The available voices depend on your browser and operating system. Voices marked with a star are higher-quality (neural/cloud) voices from Google or Microsoft. Chrome and Edge typically offer the most voices, including neural ones.
What are the speech presets?
Presets are quick shortcuts for common speed/pitch combinations. "Normal" is standard reading pace, "Slow & Clear" is great for learning or dictation, "Fast" speeds through content, and "Dramatic" adds a lower, slower delivery for storytelling.
How do pause markers work?
Type [pause] anywhere in your text to insert a break. During playback, the tool splits your text at each marker and pauses between sections. You can set the pause duration to 0.5s, 1s, or 2s using the dropdown.
What does "Compare Voices" do?
It plays the first sentence of your text in 3 different voices back-to-back so you can hear the differences and pick the best voice for your content.
What is the audio visualization?
The frequency bars shown during playback are a real-time visualization powered by the Web Audio API. They respond to the actual speech output and make the experience more engaging.
Does the word highlighting work in all browsers?
Word-by-word highlighting works best in Chrome and Edge. Firefox and Safari have partial support — the text will display but may not highlight individual words.
Is there a character limit?
No hard limit from us, but very long texts (10,000+ characters) may take a moment to process. The browser handles the synthesis entirely.
Is my text private?
Yes. Your text never leaves your device. The Web Speech API processes everything locally in your browser.
What is HD AI Voice and how is it different?
HD AI Voice uses OpenAI TTS-HD to generate studio-quality MP3 files you can download. Unlike browser voices, it sounds natural and consistent across devices. Choose from 6 voices (Alloy, Echo, Fable, Onyx, Nova, Shimmer) with adjustable speed.
Can I use the audio for YouTube or podcast content?
Browser voices are for personal use only (platform-dependent). HD AI Voice output is yours to use in videos, podcasts, and presentations. For transcribing audio back to text, try our <a href="/ai/audio-to-text">Audio to Text</a> tool.
Does it work on mobile browsers?
Yes. Browser TTS works on Chrome, Safari, and Edge on iOS and Android. Voice selection varies by OS — iPhones use Apple voices, Android devices use Google voices. HD AI Voice works identically on all devices.
How does this compare to ElevenLabs or other TTS services?
Our free browser TTS is unlimited with zero signup. HD AI Voice costs credits but produces near-ElevenLabs quality. The SSML export feature bridges both worlds — generate markup here, then paste into ElevenLabs or Google Cloud TTS for maximum control. For written content, pair with our <a href="/ai/humanizer">AI Humanizer</a> to polish text before converting to speech.

Available Languages

English Spanish French German Chinese Japanese Korean Portuguese Arabic Hindi Italian Dutch Russian Turkish Polish

Coda One's Text to Speech tool uses your browser's built-in Web Speech API to convert any text into spoken audio — no server, no signup, no data leaving your device. Choose from 50+ voices including high-quality neural voices from Google and Microsoft, add [pause] markers for pacing, and export SSML markup for use with professional TTS services like ElevenLabs, Google Cloud TTS, or Amazon Polly.

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