Reduce bitrate o mono para voz.
Arrastra y suelta archivos aquí
MP3, WAV, FLAC, M4A, OGG, or MP4. Up to 2 GB · 8 files / batch
Sube audio, ajusta bitrate o mono y descarga — todo local. La herramienta requiere una descarga inicial única de un motor de procesamiento local (Web Worker). Puede tardar unos momentos según tu conexión, pero garantiza cero subidas al servidor y privacidad total.
Conversions run in your tab with JavaScript — no desktop app required.
Files stay on your device during processing. We do not receive your uploads.
Heavy codecs and AI models run locally via Web Workers and WASM (FFmpeg.wasm, Transformers.js).
Sube audio, ajusta bitrate o mono y descarga — todo local. La herramienta requiere una descarga inicial única de un motor de procesamiento local (Web Worker). Puede tardar unos momentos según tu conexión, pero garantiza cero subidas al servidor y privacidad total.
Bitrates bajos reducen fidelidad. El procesamiento es 100% sin conexión en tu navegador: los archivos nunca salen de tu dispositivo.
Yes. This tool is free convert online with no signup. Processing stays in your browser — no uploads.
You control quality settings. Choose higher quality for no quality loss when converting online.
Every conversion runs inside your browser tab using JavaScript and Web Workers. There is no background server queue and no account is required for core tools.
Your files are never uploaded to FreeConvertKit for processing. Originals, previews, and exports stay on your device unless you choose to download or share them yourself.
When codecs or AI models are needed, WebAssembly modules such as FFmpeg.wasm and Transformers.js execute locally — giving you desktop-class power with absolute file privacy.