Metadata Removal Tools
When sharing files, be sure to remove associated metadata. Image files commonly include Exif data. Photos sometimes even include GPS coordinates in the file metadata.
MAT2 is free software, which allows the metadata to be removed from image, audio, torrent, and document file types. It provides both a command line tool and a graphical user interface via an extension for Nautilus, the default file manager of GNOME, and Dolphin, the default file manager of KDE.
ExifCleaner is a freeware, open source graphical app that uses ExifTool to remove Exif metadata from images, videos, and PDF documents using a simple drag and drop interface. It supports multi-core batch processing and dark mode.
Scrambled Exif is a metadata removal tool for Android. It can remove Exif data for many file formats and has been translated into many languages.
Imagepipe is a a paint app for Android that can be used to redact photos and also delete Exif metadata. It has been translated into many languages.
Imagepipe is only available from F-Droid and not in Google Play. If you're looking for a paint app in Google Play we suggest Pocket Paint.
Metapho is closed source. We recommend it, due to the few choices there are for iOS devices.
Metapho is a simple and clean viewer for photo metadata such as date, file name, size, camera model, shutter speed, and location.
ExifTool is the original perl library and command-line application for reading, writing, and editing meta information (Exif, IPTC, XMP, and more) in a wide variety of file formats (JPEG, TIFF, PNG, PDF, RAW, and more).
It's often a component of other Exif removal applications and is in most Linux distribution repositories.
Deleting data from a directory of files
exiftool -all= *.file_extension