Convert CAF to FLAC on Mac.

Local file processing, by renaming the file in Finder. No converter window and no upload queue.

Finder rename

report.cafreport.flac

How the rename works

  1. 1

    Start with report.caf

    Put the CAF file in a folder RenameTo watches, such as Desktop or Downloads.

  2. 2

    Rename it to report.flac

    In Finder, change .caf to .flac, then press Return. The rename is the command.

  3. 3

    Find the FLAC beside it

    RenameTo produces the requested output and keeps a restorable backup of the original.

What happens under the hood

RenameTo reads the CAF with the appropriate local macOS media or document framework, then writes a new FLAC beside it. The file itself is not sent to a conversion server.

About the formats

CAF is Apple's Core Audio format. FLAC is losslessly compressed audio.

Questions, answered

Does my file get uploaded anywhere?

No. File processing happens on your Mac. RenameTo does use the network for license validation, trial activation, and update checks, but your source files are not part of those requests.

What happens to the original CAF file?

RenameTo keeps a backup before processing. Undo restores the original alongside a format-changing output and does not delete that output. If the original name is already occupied, the restored copy gets “(restored)” in its name.

Can I convert a whole folder?

Yes. Rename multiple selected files in Finder and RenameTo queues each supported conversion, with a separate result and backup for every file.

Can I run the same conversion from a script?

Yes. The CLI command is: renameto flac *.caf

Related conversions

Convert CAF to AAC

report.caf → report.aac

Convert CAF to AC3

report.caf → report.ac3

Convert CAF to AIFF

report.caf → report.aiff

Convert CAF to EAC3

report.caf → report.eac3

Convert 3GP to FLAC

report.3gp → report.flac

Convert AAC to FLAC

report.aac → report.flac

Convert AC3 to FLAC

report.ac3 → report.flac

Convert AIFF to FLAC

report.aiff → report.flac

Looking for another format? Browse every conversion.