This is because EXIF contains sensitive information like the camera lens type and the location where you took the photo. This article will show you some of the best tools you can use to read, modify, and remove EXIF tags on your photos in Linux.
1. Metadata Cleaner
Metadata Cleaner is an easy-to-use graphical utility that can remove EXIF data from your images. Based on the powerful mat2 CLI program, it provides a beautiful and accessible drag-and-drop interface that can read and delete metadata. This makes it attractive to users who don't want to run command line programs while hiding their image information.
One of the biggest features of Metadata Cleaner is that it can also remove metadata from non-image files. For example, the application can remove sensitive information from MP3 files, MP4 videos and PDF documents. Therefore, Metadata Cleaner is a great 'all-rounder' to hide your digital files' information.
Advantage
- Comes with a beautiful and accessible GUI
- Available as a Flatpak portable application
- Metadata can be removed from non-image files
Defect
- Not supported and
- Does not provide the option to create a 'clean' file copy when removing metadata
- Sandbox Flatpak can lead to problems accessing local files
2. ExifTool
ExifTool is a very flexible command line program for reading and removing EXIF tags in Linux. It supports many formats including XMP, JFIF and even ID3. Furthermore, ExifTool also supports batch processing to help hide your image information quickly and easily.
Exiftool can also create "metadata-only" backups of your images and create custom user tags that can include any type of text data. This makes it useful for both privacy-conscious users and data archivists who want to clean up images and preserve their metadata.
Advantage
- Supports a large number of metadata formats
- Can export EXIF data on external backup files
- Batch processing is possible when modifying and deleting EXIF data
Defect
- Requires familiarity with the command line
- The default output can be confusing for new users
- Does not completely remove EXIF metadata on some image formats
3. ImageMagick
ImageMagick is a powerful software suite that can remove metadata from any image file. With the identify and mogrify options, ImageMagick can read and remove any data from your images, including custom user comments.
One of the attractions of ImageMagick is that it doesn't just remove data from your images. It can create, edit and even convert them from one format to another. This makes it a useful tool if you're looking for an 'all-in-one' tool that can handle both EXIF and image editing.
Advantage
- Can create and convert images quickly
- Installed in most Linux distributions as a dependency
- There are basic photo editing tools on the command line
Defect
- Don't remove all metadata from digital images
- EXIF removal options may be limited
- The image can be decompressed after you remove its metadata
4. Jhead
Jhead is a simple EXIF manipulation tool for Linux. Unlike ExifTool and ImageMagick, Jhead specializes in reading and editing JPEG image headers. By default, it can read and remove all standard tags from JPEG images. This includes your camera's sensor, style, and even your distance from the subject in the photo.
Another important feature of jhead compared to other tools is its focus on minimalism of the software. Developer jhead designed the program to be as simple and self-contained as possible. Not only does this help the program run quickly, but it can also be a good starting point for any new programmer wanting to learn about JPEG and EXIF data structures.
Advantage
- The source code is very simple and does not require any additional dependencies
- Runs fast on computers with little or no resources
- Provides most of the features available in larger EXIF tools
Defect
- Only works with JPEG files
- Its simplicity may be limiting for some users
- May not be friendly to people who don't know how to program
5. Exiv2
Exiv2 is a powerful command line program to read and delete EXIF metadata in Linux. Similar to ExifTool, it can work with several formats such as EXIF, IPTC and ICC color data. This gives the app flexibility with the types of information you can modify, making it useful for both image analysis and information hiding.
Additionally, another selling point of Exiv2 is its ability to correct any encoding errors and shorthand notation to adjust any EXIF metadata tag. For example, you could run exiv2 ad -Y 1 ./image.jpg to add a year to the timestamp of 'image.jpg'. Ultimately, Exiv2 is a great 'all-in-one' tool not only for removing metadata but also for analyzing and refining it.
Advantage
- Comes with several shorthand commands to quickly edit and delete EXIF data
- Comes with a C++ library that you can use to add Exiv2 to your own programs
- Can fix encoding errors and has a special function to fix ISO tags on photos from Canon and Nikon cameras
Defect
- Default output may be missing for some users
- Not much format support compared to ExifTool
- Some distributions may not have it in stock
Hiding your image information by deleting or modifying their EXIF data in Linux is just the first step to regaining your digital privacy. Hope the tools suggested above will help you