Exif Data in PhotosĮxchangeable image file format, or Exif data, is information that accompanies an image file and contains many data fields that can be populated or left blank. They collect it and add it next to your likes, comments, your network of ‘friends’ etc., to profile you. While social media platforms like Facebook or Instagram ( same company – Facebook ) strip out the metadata before it shows your photo to the world, they don’t just erase that metadata. Make sure the service you use strips out metadata. Luckily, most social media platforms eliminate this threat by stripping out metadata from your published files. That’s metadata.īesides what’s visible in the photo itself, metadata can reveal when and where the photo was taken, the device used to take the photo and other unique characteristics that can fingerprint you across the web.īy not removing metadata, a hacker or OSINT researcher can easily find out where you live, where you work, your preferences and habits, etc., just by extracting the Exif data hidden inside the photos you post online. And both file types have one thing in common that can give away a lot more information than you might think. The two most common file types shared online today are photos and videos. All modern digital cameras (including the one on your phone) record EXIF data when capturing an image.Today, however, a picture is worth much more than that, and it can threaten your privacy and security.ĪLSO READ The Easiest Way to Remove EXIF MetadataĪLSO READ Metadata Cleaner: View and Clean Metadata ( Linux ) The information recorded in EXIF is shutter speed, date and time, aperture, ISO, and even GPS coordinates. This information can be used to organize photographs, search for specific photos, create a map of where a photo was taken, and much more. The acronym EXIF stands for Exchangeable Image File Format. In this tutorial we are going to discuss using exiftool to view and edit EXIF data on the Linux command line.st command line tool I have found.
#EXIFTOOL UBUNTU HOW TO#
Let's go over how to install the exiftool on your system. Installing Exiftool with Your Package Manager If you already have it installed, you can skip to " Viewing EXIF Data" or " Editing EXIF Data". Most Linux distros have the Perl ExifTool package available in the repositories. This is by far the easiest (and safest) way to install exiftool. Below you will find how to install it on your favorite flavor of Linux.
NOTE: For CentOs/Red Hat you will have to install and enable the epel repository. Refer to " How to Install PERL Modules with CPAN" for more information about installing and using CPAN for Perl Modules.Īfter you installed CPAN (2 minutes) you should be at a CPAN prompt (if not just type cpan at the shell prompt to start): cpan> Perl comes installed by default and all you have to do is install a small Perl program via CPAN. Type the following command: install Image::ExifTool Now all you need to do to view the EXIF data is call the exiftool program followed by the image name like so. Extracting Specific Information from EXIF ]$ exiftool girls.jpgįile Modification Date/Time : 2012:09:01 23:03:01-04:00Įxif Byte Order : Little-endian (Intel, II) Here we are viewing the EXIF data from a file named girls.jpg.
You can also use the program to get ONLY certain information. You can use switches to pull only the information you need like so: ]$ exiftool -T -Filename -Aperture *.jpg For example, let’s say you have multiple jpegs and you want to know which aperture you used for each image. You can easily list the common EXIF information using -common like so: ]$ exiftool -common Thanksgiving_2018.jpgįlash : On, Fired List All Available Tags from EXIF NOTE: using the -T option hides the name of the tag.
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