Compress AAC files

Upload an AAC file and shrink its size.

Quality

Your file never leaves your device. All processing happens right in your browser, and nothing is uploaded to a server.

Re-encoding AAC at a lower bitrate

Long stream captures arrive large; this tool re-encodes the AAC at a lower bitrate to cut the size, right in the browser. Speech-heavy radio content compresses especially well.

Worth considering

If the goal is archiving rather than squeezing, wrapping the stream into M4A without re-encoding preserves full quality and adds metadata support. Compress when size is the constraint; convert when organization is.

FAQ