# huangyz0918/AndroidWM

An android image watermark library that supports steganography.

Repository: https://github.com/huangyz0918/AndroidWM
Canonical: https://ross.abutalabs.com/products/androidwm
Homepage: http://huangyz.name/AndroidWM/
Language: Java
License: Apache-2.0
License Family: permissive
Topics: image-processing, watermark, android-library, encryption, watermarking, watermark-image
Last push: 2024-05-10T19:10:48+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 2927, "days_push": 845, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1629, forks 209 (observed 2026-08-28T04:05:13.873297+00:00)

## What it is
AndroidWM is a lightweight Java library for Android that adds visible or invisible (steganographic) watermarks to images. It supports text and image watermarks with customizable position, rotation, alpha, tiling, and encrypted digital watermarks.

## Use cases
- add a visible text watermark to photos in an android app
- embed an invisible encrypted watermark into images for copyright protection
- tile a logo watermark across an image
- detect steganographic watermarks in android
- protect user-uploaded images with watermarks

## When to choose
- you need watermarking on Android with both visible and invisible options
- you want a lightweight library (28Kb light variant) for visible watermarks only
- you need encrypted/steganographic watermark support in Java on Android

## When to avoid
- you need watermarking on iOS, desktop, or server-side Java
- you need advanced robust steganography resistant to compression or cropping
- your project is Kotlin-first and you want a modern Kotlin API

## Facets
- artifact type: library
- maturity: maintenance
- function: image-processing, security, cryptography
- domain: image-processing, android-tools, security, mobile-development
- platform: jvm
- tags: watermarking, steganography, digital-watermark, invisible-watermark, visible-watermark, image-protection, android, mobile

## Member repositories
- huangyz0918/AndroidWM (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:13.873297+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:48:17.256257+00:00, confidence not recorded.
  - readme: https://github.com/huangyz0918/AndroidWM (fetched 2026-08-28T04:05:13.873297+00:00, sha 0efa3ee0092e)
  - homepage: http://huangyz.name/AndroidWM/ (fetched 2026-08-29T11:20:45.890187+00:00, sha d12b7290a25a)
- Data as of 2026-08-30T08:39:29.467469+00:00.