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Whisper Web
Free Whisper Tool

Free Whisper Transcription — Run OpenAI Whisper in Your Browser

Use OpenAI's Whisper speech-to-text model directly in your browser — no API key, no Python environment, no command line. Just open the page and start transcribing with the same model used by millions.

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Whisper, Simplified

Real OpenAI Whisper Model

Not a wrapper or API proxy — Whisper Web runs the actual Whisper model locally in your browser using WebAssembly and ONNX Runtime. Same architecture, same accuracy, zero cloud dependency.

WebGPU Acceleration

On supported browsers (Chrome 113+, Edge), Whisper Web leverages your GPU via WebGPU for dramatically faster inference. Expect 3-5x speedup compared to CPU-only processing.

No API Key Required

Skip the OpenAI API signup, billing setup, and rate limits. Whisper Web runs the model entirely on your device — no API key, no per-minute charges, no usage caps.

No Python or CLI Setup

No conda environments, no pip install, no ffmpeg dependencies, no CUDA drivers. If you have a modern web browser, you can run Whisper right now.

All 100+ Whisper Languages

Full language support — the same 100+ languages available in the original Whisper model. Automatic language detection works just like the Python version.

Standard Export Formats

Export transcripts as TXT, SRT, VTT, or JSON — the same formats you'd get from whisper CLI. Compatible with any subtitle editor, video tool, or text processor.

How to Use Whisper in Your Browser

1

Open Whisper Web

Navigate to whisperweb.dev. The first visit downloads the Whisper model (~40-150 MB depending on size). After that, it works offline.

2

Choose Your Model

Select from Whisper tiny, base, small, or medium models. Larger models are more accurate but slower. Start with 'small' for the best balance.

3

Upload or Record Audio

Drag and drop any audio file (MP3, WAV, M4A, FLAC, OGG, WebM) or click record to capture from your microphone.

4

Get Your Transcript

Whisper processes the audio locally. View the timestamped transcript, then export as TXT, SRT, VTT, or JSON — just like the command-line version.

Perfect For

Trying Whisper without installing Python, ffmpeg, or CUDA
Running Whisper on machines where you can't install software
Transcribing files privately without sending audio to the OpenAI API
Quick one-off transcriptions without API key setup and billing
Generating SRT/VTT subtitles from audio or video files
Testing Whisper accuracy on different languages and audio types
Using speech-to-text on Chromebooks, shared computers, or locked-down devices

Frequently Asked Questions

Is this the real OpenAI Whisper model?
Yes. Whisper Web runs the actual Whisper model architecture, converted to ONNX format for browser execution. It's not a third-party recreation or a different model with a similar name. You get the same speech recognition quality as the original.
How does the accuracy compare to the Python version?
For the same model size (tiny, base, small), accuracy is equivalent — it's the same model weights. The main difference is speed: WebGPU-accelerated browser execution is fast but still slower than running Whisper on a high-end NVIDIA GPU via the Python library.
Which Whisper model size should I use?
Start with 'small' — it offers the best balance of accuracy and speed for most use cases. 'Tiny' and 'base' are faster but less accurate, especially with accented speech or background noise. 'Medium' gives better accuracy but requires more processing time and memory.
Does it work offline?
Yes. After the first visit downloads the model files, Whisper Web can run completely offline. The model is cached in your browser's storage. This is useful for air-gapped environments, travel, or unreliable internet connections.
Why is this free? Is there a usage limit?
Whisper Web is free because the AI model runs on your own device — there are no server costs. There are no per-minute charges, no daily limits, and no file count restrictions. Transcribe as much as you want.
Does my audio get sent to OpenAI or any server?
No. Despite using OpenAI's Whisper model, no audio is sent to OpenAI or any other server. The model runs entirely in your browser. This is fundamentally different from the OpenAI Whisper API, which processes audio on OpenAI's servers.

Try Whisper in Your Browser — Free

No signup. No upload. No data collection. Just open your browser and go.

Start Transcribing