Load an audio file, inspect its current technical info, adjust bitrate, sample rate, and channels, rewrite common tags, and export a new file without uploading it to a server.
Drop an audio file here
We read the current tags first, then prepare a local ffmpeg.wasm export pipeline.
The extension follows the selected output format.
At least one technical setting changed, so the audio stream will be encoded again with the selected output recipe.
The processing engine starts downloading automatically after you choose a file and runs locally in your current browser tab.
FAQ
No. Exporting to a higher bitrate creates a new file with a higher target bitrate, but it cannot recover detail that was already removed from a lossy source.
You can edit common embedded tags such as title, artist, album, album artist, genre, year, comment, publisher, and copyright.
You can choose the output container and adjust target bitrate, sample rate, and output channels. If the format stays compatible and all technical settings remain on auto, the tool can use a metadata-only copy path without re-encoding.
No. Browsers can rewrite the downloaded file contents and embedded tags, but they cannot reliably set macOS file-system metadata such as created time, modified time, or the Finder Where from field.
No. Audio inspection, tag editing, and ffmpeg.wasm processing all run inside the current browser tab.
