Heart
Heart's warm, natural tone makes it ideal for storytelling, audiobooks, educational content, and any project that needs a friendly, engaging voice.
Try the Heart voice — 100% free, no signup
Runs in your browser. Private, offline, unlimited.
Heart is a female American English AI voice rated A on the OfflineTTS quality scale. It runs entirely in your browser — no API key, no signup, no data uploaded to any server.
Voice character: Warm, Natural
Best for: Storytelling & narration
How to use the Heart voice:
- Open the TTS tool and select the Kokoro engine
- Choose "Heart" from the voice dropdown
- Type or paste your text (up to 50,000 characters)
- Click generate — speech is created on your device
- Download as WAV for production quality or MP3 for smaller files
Quality rating explained: A means this is one of the best voices available — natural, expressive, and suitable for professional production.
All voices on OfflineTTS run on your device using WebGPU or WebAssembly. After the initial model download, the Heart voice works completely offline — on planes, trains, or anywhere without internet.
Explore other American English voices or try [different languages](/tts/english/) for your project.
Heart Voice Details
Best For: Storytelling & narration
Heart's warm, natural tone makes it ideal for storytelling, audiobooks, educational content, and any project that needs a friendly, engaging voice.
Related Voices
How to Use the Heart Voice
Select Heart
Choose "Heart" from the voice dropdown in the American English section
Type Your Text
Enter up to 50,000 characters of american english text
Download Audio
Generate and download as WAV or MP3 — all processing happens on your device
Heart Voice — FAQ
Yes. The Heart voice is completely free. It runs on your device using the Kokoro TTS model — no API key, no signup, no character limits. Generate as much speech as you need at zero cost.
Yes. After the initial model download (cached in your browser), you can generate speech with the Heart voice completely offline — no internet connection required.
The Heart voice is rated A on our quality scale. This is our highest rating — it produces natural, expressive speech suitable for professional production use.
Yes. The Kokoro TTS model is Apache 2.0 licensed, which allows commercial use. You can use the Heart voice in YouTube videos, podcasts, audiobooks, and other commercial content.