Reduce exe file

Question

Using Delphi (or in general any tools, if exist of course), is it possible to reduce size of an exe file, removing all code that not is used but that is present there?
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Answer 1

Delphi has a smart linking option that is ON by default if I remember correctly. It does exactly what you describe. Only used functions and data are linked to your exe. If you need further size compression you can try one of the many "exe compressor" programs out there.