A Claude Skill to Generate Professional App Store Screenshots

If you are an indie developer or a small team, you know the pain. You finish building your app, you are ready to ship, and then you remember: you still need screenshots. Not just a couple of screenshots, but dozens of them. iPhones, iPads, Android phones, maybe even watches. Each with the right dimensions, the right text, the right colors.

So you open Figma. Or Canva. Or some screenshot generator website. You start dragging things around, matching colors, resizing for each device. An hour passes. Then two. You wonder why you became a developer in the first place.

What if your AI coding assistant could do all of this for you?

Screenshots Without Leaving Your IDE

We built a ScreenshotWhale skill for Claude Code (and any AI agent that supports skill files) that generates a complete set of app store screenshots directly from your project. No browser tabs. No design tools. One command.

Here is what it does:

1. Reads your codebase to extract your color palette, app name, and design language from theme files.
2. Asks you for screenshots of the key screens you want to showcase.
3. Writes benefit-driven copy for each screenshot. Not "Settings Screen" but "Make It Yours." Not "Dashboard" but "Everything at a Glance."
4. Generates layouts with proper gradients, device mockups, and text positioning for every device size.
5. Uploads everything to ScreenshotWhale and gives you a link to open the project in the visual editor.

The result is a complete project with 18 device sizes (7 iPhone sizes, 7 iPads, 4 Android phones) all generated in one shot. Every screenshot has consistent design, correct aspect ratios, and centered device mockups.

Install in 10 Seconds

Run this in your project root:

mkdir -p .claude/skills && curl -o .claude/skills/generate-screenshots.md https://screenshotwhale.com/skills/generate-screenshots.md

Then tell Claude:

"Generate app store screenshots for my app"

That is it. Claude will walk you through the process step by step. It asks about your app, reads your code for context, and asks you to provide screenshots before generating anything.

Why This Approach Works

Most screenshot tools make you start from scratch in a visual editor. You pick a template, swap in your images, adjust text, resize for each device. It works, but it is manual and repetitive.

The skill approach is different because the AI agent has context your design tool never will. It knows your app's color palette because it read your theme files. It knows what your app does because you told it. It knows how to write copy that sells because the skill file encodes best practices about app store marketing.

The result is not just faster, it is often better. The copy is benefit-driven instead of feature-focused. The layouts vary between screenshots to create visual rhythm. The colors come from your actual brand palette, not a generic template.

What You Get

After the skill runs, you get a URL that opens the project in the ScreenshotWhale visual editor. From there you can:

• Fine-tune any screenshot by adjusting text, colors, positions, or swapping images.
• Add translations using AI-powered localization into 100+ languages.
• Export everything as properly sized PNGs and JPEGs, organized by device, ready to upload to App Store Connect and Google Play Console.

The editor handles all the device-specific requirements. iPhone 6.9 inch, iPad 13 inch, Samsung Galaxy S25, Pixel 10 Pro — every size Apple and Google require is covered.

No Account Needed to Start

When the skill generates a project, it creates a public preview link. You do not need an account to see your screenshots. When you open the link, you see the full project in the editor immediately. A banner at the top lets you sign up for free to save the project to your account.

This makes it easy to try. Run the skill, see if the results look good, and only create an account if you want to keep editing.

Works With More Than Claude Code

The skill file lives at .claude/skills/generate-screenshots.md in your project. Any AI agent that reads skill files from this directory can use it. That includes:

• Claude Code (Anthropic's CLI)
• Cursor
• Windsurf
• Any MCP-compatible agent or IDE plugin that supports skill files

The skill is just a markdown file with instructions. No API keys, no dependencies, no configuration. It tells the agent exactly how to build the JSON payload and where to send it.

For Developers Who Ship Fast

If you are the kind of developer who ships an app in a weekend, you do not want to spend another weekend on screenshots. This skill turns a multi-hour design task into a 5-minute conversation with your AI assistant.

And because everything goes through ScreenshotWhale's editor, you are not locked into whatever the AI generates. You can tweak every detail. The AI gives you an excellent starting point, and the editor gives you full control.

Try it now: Install the skill with one command and generate your first set of screenshots in minutes. screenshotwhale.com