Whenever you take digital photos, be it with your smartphone or digital camera, meta information are automatically added to it in most cases.
This includes usually the date and time the photo was taken, camera settings, a thumbnail image and depending on support even location-based information.
If someone analyzes the information, they may find out where and when a photo was taken, and may even create a location-based profile if they have access to many photos that you have taken.
This has been demonstrated before. The software Creepy pulls images from Flickr and generates a location profile using them so that you can follow a person's movement on a map right away based on those information.
How to check photos
If you are using Windows, you can check your digital photos easily. Just right-click a photo on your system and select properties from the context menu.
Switch to the details tab and browse down. You will find listed all meta data information so that you can check whether personal information are stored in your photos or not.
It is alternatively possible to enable additional columns in Windows Explorer to display Exif information right there. Do the following for that:
Remove information from digital photos
You can use Windows Explorer to remove information from digital photos. Just select one or multiple files that reside in the same folder, and click on the information displayed in the footer bar.
Here you can modify some -- but not all -- information directly. It is for instance possible to change the date, remove tags, or remove or add authors.
Tools you can use to automate the process
FileMind QuickFix is a straightforward program that you can make use of to remove EXIF data from photos before you publish them online. Update: The developer website is no longer available. We have uploaded the latest working version of QuickFix to our own server. You can download it with a click on the following link: FileMindQuickFix_Setup.zip
Note that we don't support it in any way and
Just install the program on your system and run it afterwards. Now, drag and drop photos that you want to process into the program interface, and click on the Quick fix Metadata button afterwards.
The program renames the original files by default so that they remain on the system, and adds processed versions of the photos to the same directory.
If you check those out in Windows Explorer, you will notice that all metadata has been removed from them.
We have reviewed several alternatives in the past. Here is a short selection:
Ghacks is a technology news blog that was founded in 2005 by Martin Brinkmann. It has since then become one of the most popular tech news sites on the Internet with five authors and regular contributions from freelance writers.