You can shrink it more...
...just use UPX on PortableClamWin\App\clamwin\lib\*.pyd
15.0 MB -> 11.4 MB (both including over 3MB of updates)
10.7 MB -> 7.13 MB (without updates), so over 3.5MB is saved (1/3 !)
BTW, great job! 
Greetings
pps
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You can shrink it more...
...just use UPX on PortableClamWin\App\clamwin\lib\*.pyd
15.0 MB -> 11.4 MB (both including over 3MB of updates)
10.7 MB -> 7.13 MB (without updates), so over 3.5MB is saved (1/3 !)
BTW, great job! 
Greetings
pps
I would have not thought that .pyd is compressible with UPX!
Btw: it does NOT work with WinUpack, only UPX. I did not try ASPack for this.
I wouldn't have thought those would be compressible. Unless, of course, they're just renamed DLLs.
Sometimes, the impossible can become possible, if you're awesome!
Could be DLLs. Most likely.
----
R McCue
"If you're not part of the solution, you're part of the precipitate."
According to filext.com, PYD files are "Python dynamic modules."
.PYD files are in the format of a .DLL file; intended specifically as a Python extension. The file FOO.PYD is loaded with an 'import foo' statement.
So yes, they're just renamed DLLs that have been compiled from Python source.
Edit: Sorry if this edit bumps the topic to the top of the page... I'm trying to get my email address out of here. I'm being spammed to death.
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