I want to crop the white space in 300 pictures
Is there any software out there that does it?
There are enough programs, even free, which do what you want. Usually, these are picture managers which allow you to select the files/directories to process and what processing/conversion to do for them.
For example the procedure for the XnView (freeware) is as following:
The entire process is much simpler than it sounds.
Irfanview. Press B to go to Batch conversion, add your images, click "advanced" and tick "Auto crop borders". Works a treat.
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