Easy watermarking tool for your sensitive images
About this app
Your sensitive images should be watermarked before sending to someone to protect against exploitation by unkind or immoral people.
### Security - code is fully open source to be audited by the public and free to fork and modify - no stats, no share crash info, no nonsense - there are no networking involve so no images being sent or collect from the app to the internet
### Uses Use it however you want, eg: watermark your passport or id before sending it to someone.
Example, watermark "web:register@some-web.com@20260609" onto your passport before sending it for register at some website which requires your passport info.
Note that this will reduce info being leaked and possibly knows where it might leaked from the "web" channel which you watermarked but cannot fully prevent someone from re-upload or leaked it, but at least u know it is from "web" channel and maybe on what action("register@some-web.com") you did from your phone or computer etc.
Licensed under MIT, by xshadowlegendx.
What's New in v1.1.4
Imported from the F-Droid repository index.
Version history
May 23, 2023 · 7.5 MB · Android API 16–33 · code 7004
Imported from the F-Droid repository index.
SHA-256 aa8e39f5df2bdbc400b1ee75202395ca46667a0aaf00ec5d4ce5422e55c8af26
May 23, 2023 · 7.4 MB · Android API 16–33 · code 7002
Imported from the F-Droid repository index.
SHA-256 185f8011ed2ceee036e8c5f20009b4d3922f238db3714fb4cabaa7dd8502d9fd
May 23, 2023 · 7 MB · Android API 16–33 · code 7001
Imported from the F-Droid repository index.
SHA-256 65f5619442533980290da7f3ecc2122a9f73c35f61fa2f735ee46a377cca291c
Will it run on your device?
87%
- Runs on a broad range of modern Android versions.
- Multiple CPU architectures are covered.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be io.github.freewatermark.mobileapp is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 1.1.4 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Watermarking first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of Watermarking, and a listing is removed when the evidence for it stops holding up.
Get Watermarking
Every source we list for io.github.freewatermark.mobileapp is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
aa8e39f5df2bdbc400b1ee75202395ca46667a0aaf00ec5d4ce5422e55c8af26
Signing certificate
bf1c0d32016bf61ef9f605937fae510858afb9d706db86466e5f17cf6980a09b
Permissions Required
What each permission lets Watermarking do. A highlighted one is worth a second look — not necessarily wrong, just worth asking whether this app needs it.
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
More Photography apps
More from F-Droid
Report a problem with this listing
A listing is only as good as its corrections. If a source is broken, a signature looks wrong, or this app should not be here, tell the moderation team.