i18n/i18n/ja/data-redaction.md

---
meta_title: "Remove PII with Metadata Scrubbers and Data Redaction Tools - Privacy Guides"
title: "データとメタデータの編集"
icon: material/tag-remove
description: Use these tools to remove metadata like GPS location and other identifying information from photos and files you share.
cover: data-redaction.webp
---

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.

## デスクトップ

### MAT2

!!! recommendation

    ![MAT2 logo](assets/img/data-redaction/mat2.svg){ 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 [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)

## モバイル

### ExifEraser (Android)

!!! recommendation

    ![ExifEraser logo](assets/img/data-redaction/exiferaser.svg){ 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)

!!! recommendation

    ![Metapho logo](assets/img/data-redaction/metapho.jpg){ 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

!!! recommendation

    ![PrivacyBlur logo](assets/img/data-redaction/privacyblur.svg){ 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)

!!! 警告

    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).

## コマンドライン

### ExifTool

!!! recommendation

    ![ExifTool logo](assets/img/data-redaction/exiftool.png){ 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
    ```

## 規準

**私たちは、推薦するどのプロジェクトとも提携していません。**客観的に推薦できるよう、[標準となる規準](about/criteria.md)に加えて、一連の明確な要件を定めています。 プロジェクトを利用する前に、このリストをよく理解し、ご自身で調査を行って、そのプロジェクトがあなたにとって適切な選択かどうかをご確認ください。

!!! example "この項目は最近作成されました"

    私たちは、サイトの各項目に関して、定義された規準の確立に取り組んでいます。この規準は変更される可能性があります。 規準について疑問がある場合は、[フォーラムで質問](https://discuss.privacyguides.net/latest)してください。また、ここに記載されていない場合でも、私たちがプロジェクトを推奨する際に、そうした事柄を考慮しなかったと仮定するのはお止めください。 プロジェクトを推奨する際に考慮され、議論される要素は多くあり、そのすべてを文書化する作業は現在進行中です。

- Apps developed for open-source operating systems must be open source.
- Apps must be free and should not include ads or other limitations.