Sometimes if you want to hide some important files on your computer which you don't want others to see, how would you do that? Find a professional tool? Set password for some folders? Change the file properties to hidden? They are possible, but they may not be so convenient or so secure. Here we share with you how to hide a file in a picture.Prerequisites1 picture for example : test.jpg1 test file, for example : test.txtWinRARStepsPrepare the picture test.jpg and test file test.txtUse WinRAR to compress test.txt to test.rarOpen command prompt : Start->Run->Type "cmd", then cd to the dire...