We want an image of a Fly. The wings are incompletely transparent and to present that in our presentation what be problematic if suitable file format is not there. This option of file format is hidden in the software which you may be utilizing. Two cases for the similar situation are discussed here:
Notice: PNG or TIFF: TIFF has been approximately longer than PNG that was originally designed to replace GIF on the Web. Power-Point works well along with both these files while creating transparent backgrounds although generally PNG makes smaller file sizes along with no loss of quality.