Compress AAC files
Upload an AAC file and shrink its size.
Quality
Upload an AAC file and shrink its size.
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.
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.
Yes, lossy re-encoding always does. For talk radio and speech the loss at moderate bitrates is hard to hear; music is less forgiving.
Compress here first, then run the result through the AAC to M4A tool; that second step is lossless and instant.
No, processing never leaves your device.