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AU files: how to open and convert them

Sun/NeXT audio — µ-law PCM from the Unix workstation era.

What this site can do with AU

  • Open and read: yes
  • Write and convert to: yes
  • Compression: lossless — no quality is lost when saving

Convert AU to…

Convert other files to AU

Paperlane

Files are processed in your browser and never uploaded. Some tools download a processing model the first time you use them.

Install app

Install the app from your browser menu after your first visit. Once the shell and optional assets are cached, supported local tools can reopen without a connection.

On iPhone or iPad: Share → Add to Home Screen

On Android or desktop: Browser menu → Install app

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