mirror of
https://github.com/privacyguides/privacyguides.org
synced 2024-12-11 12:23:31 +01:00
147 lines
7.5 KiB
Markdown
147 lines
7.5 KiB
Markdown
---
|
|
title: "Data and Metadata Redaction"
|
|
icon: material/tag-remove
|
|
---
|
|
|
|
When sharing files, be sure to remove associated metadata. Image files commonly include [Exif](https://en.wikipedia.org/wiki/Exif) data. Photos sometimes even include GPS coordinates in the file metadata.
|
|
|
|
## Desktop
|
|
|
|
### MAT2
|
|
|
|
!!! rekomendacja
|
|
|
|
{ align=right }
|
|
|
|
**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](https://0xacab.org/jvoisin/mat2/-/tree/master/nautilus), the default file manager of [GNOME](https://www.gnome.org), and [Dolphin](https://0xacab.org/jvoisin/mat2/-/tree/master/dolphin), the default file manager of [KDE](https://kde.org).
|
|
|
|
On Linux, a third-party graphical tool [Metadata Cleaner](https://gitlab.com/rmnvgr/metadata-cleaner) powered by MAT2 exists and is [available on Flathub](https://flathub.org/apps/details/fr.romainvigier.MetadataCleaner).
|
|
|
|
[:octicons-repo-16: Repository](https://0xacab.org/jvoisin/mat2){ .md-button .md-button--primary }
|
|
[:octicons-info-16:](https://0xacab.org/jvoisin/mat2/-/blob/master/README.md){ .card-link title=Documentation}
|
|
[:octicons-code-16:](https://0xacab.org/jvoisin/mat2){ .card-link title="Source Code" }
|
|
|
|
??? downloads
|
|
|
|
- [:simple-windows11: Windows](https://pypi.org/project/mat2)
|
|
- [:simple-apple: macOS](https://0xacab.org/jvoisin/mat2#requirements-setup-on-macos-os-x-using-homebrew)
|
|
- [:simple-linux: Linux](https://pypi.org/project/mat2)
|
|
- [:octicons-globe-16: Web](https://0xacab.org/jvoisin/mat2#web-interface)
|
|
|
|
## Mobile
|
|
|
|
### ExifEraser (Android)
|
|
|
|
!!! rekomendacja
|
|
|
|
{ align=right }
|
|
|
|
**ExifEraser** is a modern, permissionless image metadata erasing application for Android.
|
|
|
|
It currently supports JPEG, PNG and WebP files.
|
|
|
|
[:octicons-repo-16: Repository](https://github.com/Tommy-Geenexus/exif-eraser){ .md-button .md-button--primary }
|
|
[:octicons-info-16:](https://github.com/Tommy-Geenexus/exif-eraser#readme){ .card-link title=Documentation}
|
|
[:octicons-code-16:](https://github.com/Tommy-Geenexus/exif-eraser){ .card-link title="Source Code" }
|
|
|
|
??? downloads
|
|
|
|
- [:simple-googleplay: Google Play](https://play.google.com/store/apps/details?id=com.none.tom.exiferaser)
|
|
- [:octicons-moon-16: Accrescent](https://accrescent.app/app/com.none.tom.exiferaser)
|
|
- [:simple-github: GitHub](https://github.com/Tommy-Geenexus/exif-eraser/releases)
|
|
|
|
The metadata that is erased depends on the image's file type:
|
|
|
|
* **JPEG**: ICC Profile, Exif, Photoshop Image Resources and XMP/ExtendedXMP metadata will be erased if it exists.
|
|
* **PNG**: ICC Profile, Exif and XMP metadata will be erased if it exists.
|
|
* **WebP**: ICC Profile, Exif and XMP metadata will be erased if it exists.
|
|
|
|
After processing the images, ExifEraser provides you with a full report about what exactly was removed from each image.
|
|
|
|
The app offers multiple ways to erase metadata from images. Namely:
|
|
|
|
* You can share an image from another application with ExifEraser.
|
|
* Through the app itself, you can select a single image, multiple images at once, or even an entire directory.
|
|
* It features a "Camera" option, which uses your operating system's camera app to take a photo, and then it removes the metadata from it.
|
|
* It allows you to drag photos from another app into ExifEraser when they are both open in split-screen mode.
|
|
* Lastly, it allows you to paste an image from your clipboard.
|
|
|
|
### Metapho (iOS)
|
|
|
|
!!! rekomendacja
|
|
|
|
{ align=right }
|
|
|
|
**Metapho** is a simple and clean viewer for photo metadata such as date, file name, size, camera model, shutter speed, and location.
|
|
|
|
[:octicons-home-16: Homepage](https://zininworks.com/metapho){ .md-button .md-button--primary }
|
|
[:octicons-eye-16:](https://zininworks.com/privacy/){ .card-link title="Privacy Policy" }
|
|
|
|
??? downloads
|
|
|
|
- [:simple-appstore: App Store](https://apps.apple.com/us/app/metapho/id914457352)
|
|
|
|
### PrivacyBlur
|
|
|
|
!!! rekomendacja
|
|
|
|
{ align=right }
|
|
|
|
**PrivacyBlur** is a free app which can blur sensitive portions of pictures before sharing them online.
|
|
|
|
[:octicons-home-16: Homepage](https://privacyblur.app/){ .md-button .md-button--primary }
|
|
[:octicons-eye-16:](https://privacyblur.app/privacy.html){ .card-link title="Privacy Policy" }
|
|
[:octicons-info-16:](https://github.com/MATHEMA-GmbH/privacyblur#readme){ .card-link title=Documentation}
|
|
[:octicons-code-16:](https://github.com/MATHEMA-GmbH/privacyblur){ .card-link title="Source Code" }
|
|
|
|
??? downloads
|
|
|
|
- [:simple-googleplay: Google Play](https://play.google.com/store/apps/details?id=de.mathema.privacyblur)
|
|
- [:simple-appstore: App Store](https://apps.apple.com/us/app/privacyblur/id1536274106)
|
|
|
|
!!! warning
|
|
|
|
You should **never** use blur to redact [text in images](https://bishopfox.com/blog/unredacter-tool-never-pixelation). If you want to redact text in an image, draw a box over the text. For this, we suggest apps like [Pocket Paint](https://github.com/Catrobat/Paintroid).
|
|
|
|
## Command-line
|
|
|
|
### ExifTool
|
|
|
|
!!! rekomendacja
|
|
|
|
{ align=right }
|
|
|
|
**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.
|
|
|
|
[:octicons-home-16: Homepage](https://exiftool.org){ .md-button .md-button--primary }
|
|
[:octicons-info-16:](https://exiftool.org/faq.html){ .card-link title=Documentation}
|
|
[:octicons-code-16:](https://github.com/exiftool/exiftool){ .card-link title="Source Code" }
|
|
[:octicons-heart-16:](https://exiftool.org/#donate){ .card-link title=Contribute }
|
|
|
|
??? downloads
|
|
|
|
- [:simple-windows11: Windows](https://exiftool.org)
|
|
- [:simple-apple: macOS](https://exiftool.org)
|
|
- [:simple-linux: Linux](https://exiftool.org)
|
|
|
|
!!! example "Deleting data from a directory of files"
|
|
|
|
```bash
|
|
exiftool -all= *.file_extension
|
|
```
|
|
|
|
## Criteria
|
|
|
|
**Please note we are not affiliated with any of the projects we recommend.** In addition to [our standard criteria](about/criteria.md), we have developed a clear set of requirements to allow us to provide objective recommendations. We suggest you familiarize yourself with this list before choosing to use a project, and conduct your own research to ensure it's the right choice for you.
|
|
|
|
!!! example "This section is new"
|
|
|
|
We are working on establishing defined criteria for every section of our site, and this may be subject to change. If you have any questions about our criteria, please [ask on our forum](https://discuss.privacyguides.net/latest) and don't assume we didn't consider something when making our recommendations if it is not listed here. There are many factors considered and discussed when we recommend a project, and documenting every single one is a work-in-progress.
|
|
|
|
- Apps developed for open-source operating systems must be open-source.
|
|
- Apps must be free and should not include ads or other limitations.
|
|
|
|
--8<-- "includes/abbreviations.pl.txt"
|