Exif Thumbnail Adder

F-Droid Open Source | Graphics

7 Downloads 14 Views v1.0 24.6 MB 4.1+

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(24.6 MB)

Editor's Overview

Exif Thumbnail Adder is a graphics application developed by F-Droid Open Source, packaged as a single Android APK of version 1.0 weighing in at 24.6 MB. The package targets Android 4.1+ and above. Below you'll find the publisher's own description, a quick spec sheet, and a short buyer-beware checklist so you know exactly what you're installing before tapping download.

Install Checklist

Only download through the button on this page — never from third-party mirrors or shortened links, which are the most common way malware spreads.
File size is a light 24.6 MB, so it installs quickly even on modest connections.
This build is signed by "F-Droid Open Source" — always verify the developer name matches what's listed on the app's official store page before installing an update.
After install, Android may prompt you to allow "Install from unknown sources" — approve only this one install, then revoke the permission in Settings > Apps > Special access.
We link directly to the APK file or the publisher's repository; we do not modify the binary. Always run a virus scan after any sideloaded install.

About this app

This application for android devices searches for pictures (JPEG) on your device and adds a thumbnail if they don't have one yet. Thumbnails are added to the EXIF metadata structure.

It is designed to work from android Oreo (android 8, SDK 26).

Please report issues here: https://github.com/tenzap/exif-thumbnail-adder/issues

For more information, some known facts and how you may contribute, refer to the [project homepage][1].

Rationale

On some smartphones, when wanting to import pictures to Windows (or any device/operating system supporting MTP or PTP protocols), I noticed the pictures may not display a thumbnail in the import wizard (whether through the Photos app, or through the Windows Explorer import feature).

There are two possible reasons for that behaviour. First, the thumbnail is not present in the picture, usually because the app that created the picture didn't add a thumbnail. Second, there is a thumbnail but it is ignored because some EXIF tags are missing.

Features

- Add thumbnail to pictures (JPEG) that don't yet have one
- Lanczos algorithm to downsample picture thanks to [FFmpeg's swscale library][2] for best results.
- Select one or more folders to scan from any storage (internal, SDCard...). For example DCIM, Pictures...
- Exclude one subdirectory from selected directories
- Preserve timestamps of the pictures
- Processing log
- Synchronize deleted files in the source directory to the backup and working directory (so that you don't keep in the backup folder pictures you don't have anymore in the source folder)
- Conservative default options (backup pictures, skip corrupt files)
- Install app on internal storage or external storage
- Default EXIF library: [Exiv2][3].
- Alternative libraries: Android-Exif-Extended, libexif, pixymeta-android. See known facts on project page to learn more on benefits and drawbacks of each library.
- Settings:
- Rotate the thumbnail
- Replace existing thumbnail
- Backup of original pictures (backup is never overwritten by the app once created if you choose to add the thumbnail to the input file in its initial location)
- Skip pictures having malformed metadata (this can be disabled to process also files having corrupt tags)
- Replace picture in place or write new picture to another directory

Requested permissions

- WRITE_EXTERNAL_STORAGE, READ_EXTERNAL_STORAGE, READ_MEDIA_IMAGES
- MANAGE_EXTERNAL_STORAGE
- ACCESS_MEDIA_LOCATION
- POST_NOTIFICATIONS
- get more details on the project homepage

Installation

- Prerequisites: minimum android Oreo (android 8, SDK 26). App was tested up to Android 11.
- Download it through F-Droid app [here][4]
- Download the APK from the [release page][5]

License

GPL-3.0 (see "COPYING" file on project homepage)

URLs

- [1]: https://github.com/tenzap/exif-thumbnail-adder
- [2]: https://ffmpeg.org/libswscale.html
- [3]: https://www.exiv2.org
- [4]: https://f-droid.org/packages/com.exifthumbnailadder.app
- [5]: https://github.com/tenzap/exif-thumbnail-adder/releases

Details

Version	v1.0
Size	24.6 MB
Developer	F-Droid Open Source
Category	Graphics
Package	com.exifthumbnailadder.app
Android	4.1+
Last Updated	Oct 30, 2026
Downloads	7

Frequently Asked Questions

Is Exif Thumbnail Adder free to download?
Yes. The APK file linked from this page is free. The developer may offer in-app purchases once installed, but obtaining the installer itself costs nothing.

What Android version does Exif Thumbnail Adder require?
Android 4.1+ or newer. Installing on older devices may cause crashes or refuse to install.

Is Exif Thumbnail Adder safe to install?
We link to the exact APK published by F-Droid Open Source. We do not modify the file. Still, as with any sideloaded app, scan it with a reputable antivirus before opening it, and only grant permissions the app genuinely needs.

How do I update Exif Thumbnail Adder?
Install the newer version on top of the old one — Android will keep your data. If the signature differs, uninstall first (you may lose local progress).

Why is the app not installing?
Common causes: not enough storage, an older Android version than 4.1+, or a conflicting build already installed. Free up space, check your OS version, and uninstall any previous copy before retrying.

How to Download & Install Exif Thumbnail Adder

Tap the Download APK button above and save the file to your device.
Open your device Settings → Security (or Apps → Special access → Install unknown apps) and allow your file manager or browser to install unknown apps for this one file only.
Open the downloaded com.exifthumbnailadder.app.apk file from your Downloads folder.
Tap Install and wait for Android to finish.
Open «Exif Thumbnail Adder» by F-Droid Open Source and grant only the permissions it actually needs.
Revoke the "unknown sources" permission once you are done installing.

Note: this page hosts or links to the installer only. The application name, icon and description are provided for identification. All trademarks belong to their respective owners.