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asc-screenshot-resize

Resize and validate App Store screenshots to exact device dimensions.

Updated Feb 22, 2026
Search Tags:#automation#screenshots#validation#macos#resize#app-store-connect#sips
One-click install
npx skills add https://github.com/pyronaur/ngents --skill asc-screenshot-resize
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: asc-screenshot-resize
Source: https://github.com/pyronaur/ngents/tree/main/docs/topics/apple/asc-cli/asc-screenshot-resize
Command: npx skills add https://github.com/pyronaur/ngents --skill asc-screenshot-resize

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Resize and validate App Store screenshots to exact target device dimensions, reducing manual edits and re-submissions.

Core Features & Use Cases

  • Automated resizing: resize screenshots to device-specific dimensions for iPhone, iPad, Mac, and Apple Watch as required by App Store Connect.
  • Validation & quality checks: verify dimensions, color space, and alpha channel compliance to ensure upload readiness.
  • Use Case: imagine you have a batch of marketing screenshots across multiple devices; this skill resizes and validates them in one pass, saving hours of manual adjustments.

Quick Start

Run the macOS-based resize workflow on your source screenshots to produce a ready-to-upload set.

Frequently Asked Questions about asc-screenshot-resize

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I resize App Store screenshots to exact device dimensions in batch?▼

Batch resize App Store screenshots to exact device dimensions using macOS sips automation, which processes iPhone, iPad, Mac, and Apple Watch images in a single pass for App Store Connect submissions.

What does sips validation check for App Store Connect screenshot uploads?▼

Sips validation checks pixel-dimension accuracy, color space conformance, and alpha-channel compliance to ensure your App Store screenshots meet upload readiness requirements and avoid manual re-submissions.

Can I use this macOS screenshot resizing workflow on Windows or Linux?▼

No, this screenshot resizing workflow relies on built-in macOS tools like sips, meaning it applies strictly to macOS-based environments and cannot execute natively on Windows or Linux.

Why does App Store Connect reject my screenshots for color space or alpha channel issues?▼

App Store Connect rejects screenshots failing color space conformance or alpha-channel compliance; automated sips validation verifies these properties alongside exact pixel dimensions to ensure upload readiness.

Do I need any external image processing libraries to resize screenshots for App Store Connect?▼

No, you do not need external image processing libraries; the workflow satisfies pixel-dimension accuracy, color space conformance, and alpha-channel checks entirely using built-in macOS sips tools.

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