The devices we use to take pictures embed extra data storing information related to the picture like date captured, GPS location, make and model of device and much more. Here is a quick solution to remove that metadata from your photos on Mac OS X.
brew install exiv2
To view metadata of your photo.jpg
exiv2 -pa photo.jpg
To delete all metadata from photo.jpg
exiv2 -da photo.jpg
To batch remove metadata from a folder of images
exiv2 -da *.jpg