Windows 10,  Acer Aspire M3450 64 bit  400ghz RAM:

Windows Photo Gallery :  I wonder is there any way of NOT shrinking my photos so much if I have to rotate them.  Really getting tired of taking a photograph of something big sideways and then when I rotate it, it shrinks to less than 1/3 the actual size.                                   Are there any settings ( in Windows) that I can change or do I have to download or acquire a rotation tool to not have them shrink ?  How reliable are software programs that do not shrink the photos? 

Thank you for any information.

Susan Richey