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ios-icon-fix

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Remove alpha channel (transparency) from iOS app icons. Apple App Store rejects icons with transparency. Use this after regenerating app icons or before iOS archive/upload to fix the "Invalid large app icon - can't be transparent or contain an alpha channel" error.

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How to use this skill

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  3. Review the proposed files and risks before you approve installation.
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Source SKILL.md: https://github.com/decentpaste/decentpaste/blob/HEAD/.claude/skills/ios-icon-fix/SKILL.md

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Copying this prompt does not install or run the skill. Review third-party files before use. Codex skill guide

iOS Icon Fix

Remove alpha channel from iOS app icons to comply with Apple App Store requirements.

When to Use

  • Before uploading to App Store Connect / TestFlight
  • After regenerating iOS app icons
  • When you see error: "Invalid large app icon... can't be transparent or contain an alpha channel"

Usage

Run the script:

python3 .claude/skills/ios-icon-fix/scripts/remove_alpha.py

Or specify a custom path:

python3 .claude/skills/ios-icon-fix/scripts/remove_alpha.py path/to/AppIcon.appiconset

What It Does

  1. Finds all PNG icons in the appiconset directory
  2. For each icon with alpha channel:
    • Creates white background
    • Composites the icon onto it
    • Saves without alpha
  3. Verifies all icons have no transparency

Requirements

  • Python 3
  • Pillow: pip install Pillow

Default Icon Location

decentpaste-app/src-tauri/gen/apple/Assets.xcassets/AppIcon.appiconset/