Alpha
Alpha is a reliable female Japanese voice suitable for general voice-over, narration, and content creation.
Try the Alpha voice — 100% free, no signup
Runs in your browser. Private, offline, unlimited.
Alpha is a female Japanese AI voice rated C+ on the OfflineTTS quality scale. It runs entirely in your browser — no API key, no signup, no data uploaded to any server.
Best for: General voice-over
How to use the Alpha voice:
- Open the TTS tool and select the Kokoro engine
- Choose "Alpha" 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: C+ means this is a standard quality voice — usable for drafts, testing, and content where perfection is not critical.
All voices on OfflineTTS run on your device using WebGPU or WebAssembly. After the initial model download, the Alpha voice works completely offline — on planes, trains, or anywhere without internet.
Explore other Japanese voices or try [different languages](/tts/english/) for your project.
Alpha Voice Details
Best For: General voice-over
Alpha is a reliable female Japanese voice suitable for general voice-over, narration, and content creation.
Related Voices
How to Use the Alpha Voice
Select Alpha
Choose "Alpha" from the voice dropdown in the Japanese section
Type Your Text
Enter up to 50,000 characters of japanese text
Download Audio
Generate and download as WAV or MP3 — all processing happens on your device
Alpha Voice — FAQ
Yes. The Alpha 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 Alpha voice completely offline — no internet connection required.
The Alpha voice is rated C+ on our quality scale. This voice produces usable speech that works well for drafts, testing, and content where perfection is not critical.
Yes. The Kokoro TTS model is Apache 2.0 licensed, which allows commercial use. You can use the Alpha voice in YouTube videos, podcasts, audiobooks, and other commercial content.