Near-native speed via WASM

Privacy is the
New Fidelity.

A laboratory-grade audio engine that lives in your browser. Transcode, manipulate, and export with zero server-side processing—not a single byte ever leaves your device.

bolt Local WASM Module Active
Processing Status 0ms Server Latency
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Core Technology

Privacy, Always

Total Privacy

Your data stays on your device. None of your property will ever touch the cloud.

Data Transmission

0.00 KB

Absolutely no audio data is transmitted. Conversion happens via WebAssembly on your CPU.

Hardware Speed

Native

Near-native speed via WASM. Leveraging multi-threaded SIMD instructions for near-instantaneous local processing.

Privacy & Security

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On-Device Intelligence

Every algorithm, from FFmpeg to high-end filters, is compiled to WASM. Your machine is the server.

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No Telemetry

We don't collect usage data, file names, or metadata. We don't even have a database.

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Free Forever

Since we don't pay for server compute, the tool is free for everyone to use at scale.

Supported Formats

FLAC, MP3, WAV, OGG, M4A, and AAC. One engine to rule them all, optimized for every browser with zero server-side processing.

44.1kHz 24-Bit Stereo

Ready to convert?

Experience the speed of local-first audio processing without compromising your privacy.

Explore Zero Audio

Dive into the AI Enhancer, see what’s included on the Features page, or browse answers in the FAQ. Need help? Visit Support.

References: Web Audio API, WebAssembly