Individual skill

id-photo-tool

Replace an ID photo background color (blue/white/red) and/or add a configurable text watermark when you need compliant ID-photo variants from local JPG/PNG files.

scientific-skills/Other/id-photo-tool/SKILL.md

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Sep 17, 2026
License
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> **Source**: [https://github.com/aipoch/medical-research-skills](https://github.com/aipoch/medical-research-skills)

## When to Use
- You need to convert an ID photo background to a required solid color (blue/white/red) for official submissions.
- You need to add a visible “for application only” style watermark to prevent misuse of shared ID photos.
- You need to batch-generate multiple variants while keeping the original image unchanged (explicit output path).
- You need an offline, local-only tool (no network access) for processing sensitive personal images.

## Key Features
- Background color replacement for ID photos:
  - Supported target colors: `blue`, `white`, `red`
  - Detects the dominant background color using edge pixels and replaces it using color-distance matching
- Text watermark overlay:
  - Supported positions: top-left, top-right, bottom-left, bottom-right, center
  - Configurable opacity, font size, and font color
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