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Your data stays on your device and is never sent to our servers.
Convert audio to mono or stereo. Processing stays local in the browser.
Convert an audio file to mono or stereo directly in your browser. This is useful for reducing channels, standardizing a workflow or preparing audio for a target device.
Your data stays on your device and is never sent to our servers.
Generate, convert, or validate technical data with purpose-built controls.
Technical formats and syntaxes suited to each generator, converter, or validator.
Get a clean, ready-to-use result in seconds without installing software or configuring a complex workflow.
Fonctionnement
The file stays in your browser. The shared Bethemesh audio engine applies the transformation with FFmpeg/WASM and generates a result that can be downloaded or reused in Workspace. The same shared operation powers the public tool, widget and Workspace pipelines, keeping behavior consistent across every Bethemesh surface and reusable audio workflow.
Use the same transformation in Workspace to process audio collections.
Prepare a file quickly before editing, publishing or archiving.
The source file stays in your browser throughout the operation.
Guide
Choose a supported audio file.
Set the available option when the tool requires one.
Run the transformation and download the generated result.
No. Processing runs locally in your browser.
Yes. The same shared transformation is available in pipelines.
Bethemesh accepts its supported audio formats and processes the result locally in the browser.
Learn the difference between mono and stereo, when downmixing is useful, and how to split left and right channels into separate files.
Convert, trim, adjust volume and merge MP3, WAV, FLAC, OGG, M4A or Opus files, then combine these operations in a pipeline.
Adjust audio gain locally in the browser and understand clipping, sensible levels and pipeline order.
Keep a precise interval from MP3, WAV or another audio file locally and use the result in a pipeline.
Recommended workflow
Discover tools that naturally fit before, after, or alongside this one.
Normalize the perceived loudness of an audio file to a LUFS target.
Speed up or slow down an audio file without changing pitch.
Resample audio to 44.1 kHz, 48 kHz or another rate.