Open Source Real-time Speech Transcription in Your Browser
Whisper Transcribe is a free, open source extension that uses AI to convert speech to text entirely locally. Your audio never leaves your device.
Key Features
Powerful speech transcription with privacy at its core
Real-time Transcription
Convert speech to text in real-time as you speak, with minimal delay.
100% Local Processing
All audio processing happens directly in your browser. No data is sent to external servers.
Multiple Languages
Support for multiple languages with our multilingual Whisper models.
WebGPU Acceleration
Utilizes your GPU for faster processing when available through WebGPU.
Easy-to-use Interface
Simple, intuitive controls for starting, stopping, and copying transcriptions.
Copy to Clipboard
Easily copy your transcriptions to clipboard with a single click.
How It Works
Powered by transformers.js and Whisper AI
Capture Audio
The extension uses the Web Audio API to capture audio from your microphone.
Process Locally
Audio is processed entirely in your browser using transformers.js and the Whisper AI model.
Display Results
The transcribed text is displayed in real-time and can be copied to your clipboard.
Powered by WebGPU
Utilizes your GPU for faster processing when available, falling back to CPU when needed.
CPU
Always available
GPU
For faster processing
Model Options
Choose the right Whisper model for your needs
Tiny
39M parameters
Fastest option with good accuracy for simple transcription tasks.
Small
244M parameters
Balanced option with better accuracy and reasonable speed.
Base
74M parameters
More accurate than Tiny with slightly slower performance.
Privacy First
Your audio never leaves your device. All processing happens locally in your browser.
- No audio data is sent to external servers
- No transcriptions are stored or transmitted
- Only downloads model files when you select them
- Open source code for transparency
Privacy Comparison
Frequently Asked Questions
Common questions about Whisper Transcribe
How accurate is the transcription?
Accuracy depends on the model you choose, audio quality, and background noise. The larger models (Small, Base) provide better accuracy than the Tiny model. For best results, use a good microphone and minimize background noise.
Does this work offline?
Yes, once you've downloaded the model files, the extension works completely offline. The model files are cached in your browser, so you only need to download them once.
How much storage space do the models require?
The Tiny models are approximately 80MB, Base models are around 150MB, and Small models are about 500MB. The models are downloaded and stored in your browser's cache.
Which browsers are supported?
The extension is designed for Chrome and Chromium-based browsers (like Edge and Brave). For optimal performance, browsers with WebGPU support are recommended, but the extension will fall back to CPU processing if WebGPU is not available.
Can I use this for live meetings or lectures?
Yes, the extension is designed for real-time transcription. You can use it during meetings, lectures, or any other scenario where you need to transcribe speech as it happens.
Ready to Try Whisper Transcribe?
Install the extension and start transcribing speech in seconds