Professional PCM Player & Converter
Privacy-First Audio Engine
Convert, play and record audio formats entirely in your browser. Your audio files and recordings are processed locally and never uploaded to the server.
Drop audio files here
WAV, PCM, MP3, OPUS, OGG (Up to 5 files)
100% Private: Files processed locally in your browser
What are the features of ToolkitPro?
Edge Processing
Secure local processing with FFmpeg-WASM. Zero server reliance for maximum privacy.
PCM Control
Granular control over raw PCM streams with dynamic sample rate and bit depth settings.
Resampling Engine
High-fidelity resampling between 8kHz and 48kHz for professional signal processing.
Privacy First
Your data stays on your device. Period. We never see your audio files or voice recordings.
Opus Optimized
Native support for the Opus codec, ideal for high-efficiency web streaming and VoIP.
Instant Execution
Bypass network latency. Conversion starts the millisecond you click, powered by your CPU.
What Our Users Say
JOIN 10,000+ DEVELOPERS WORLDWIDE
See what our developers and creators have to say about our in-browser processing tech.
"ToolkitPro is a game-changer for our VoIP debugging. Being able to drop a raw PCM dump and hear it instantly saved us hours."
Alex Rivest
Senior WebRTC Engineer"The cleanest UI I've seen for an audio tool. No ads popping up, no waiting for server animations. It just works, beautifully."
Sarah Jenkins
Podcast Producer"Finally, a tool that understands PCM. The manual parameter input is exactly what developers working with AI voice models need."
Chen Wei
AI Research Lead Master Your Audio &
PCM Like a Pro
Upload Securely
Your files are processed purely in-browser using WebAssembly. No data ever leaves your device.
Configure Details
Manually set PCM parameters or let our engine auto-detect standard formats like MP3 and WAV.
Instant Export
Convert between frequencies and formats in milliseconds with zero server latency.