Compress M4B

Reduce M4B audiobook file size with percentage, target size, or bitrate controls. Optionally trim a section before exporting.
OptionsAdvanced Options - Our defaults are optimized for the best results. We recommend you keeping the defaults unless you have a specific need.
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File Compression
File size (%)
1
80
100
If your file is 10 MB, then selecting 80 will produce a 8 MB file. If you make the output file size too small, then output video quality may suffer.
Audio Channel
Audio Channel
Audio Sample Rate
Audio Sample Rate
Trim

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