Want to remove metadata (DateTime, Model, Orientation, ShutterSpeedValue, etc) from your images? You can use mogrify or convert tools provided by ImageMagick.

GUI image viewer applications will usually allow you to see some of the image metadata. You can also use the identify command line tool to get all the metadata:

# remove 'head' to get the entire list of metadata
$ identify -verbose insect.jpg | grep 'exif' | head
    exif:ApertureValue: 113/32
    exif:ColorSpace: 1
    exif:ComponentsConfiguration: 1, 2, 3, 0
    exif:CompressedBitsPerPixel: 3/1
    exif:CustomRendered: 0
    exif:DateTime: 2016:12:03 11:26:10
    exif:DateTimeDigitized: 2016:12:03 11:26:10
    exif:DateTimeOriginal: 2016:12:03 11:26:10
    exif:DigitalZoomRatio: 4000/4000
    exif:ExifOffset: 240

And here's how you can remove such metadata from images:

# to create a new image with metadata removed
$ convert -strip insect.jpg op.jpg

# to modify the input image itself
$ mogrify -strip insect.jpg

You can also pass multiple images to mogrify:

$ mogrify -strip *.jpg

info Note that the image size after metadata removal may vary because of recompression.

Video demo:

Further Reading: