Mobile app screenshot API.

Example request

{
  "async": true,
  "canvas": { "preset": "appstore.iphone_6_9" },
  "output": { "locales": ["en-US", "de-DE"], "format": "fastlane_zip" },
  "slides": [
    {
      "headline": { "lines": ["Numbers you can", "act on"], "accent": "act on" },
      "screenshot": { "url": "https://example.com/captures/home.png" }
    }
  ]
}

Implementation checklist

• Capture real iOS and Android UI.
• Select App Store and Play canvases in output.stores.
• Render the full set with a stable Idempotency-Key.
• Read lint before upload.
• Archive the Fastlane ZIP or direct image URLs.

One contract for both stores

The useful abstraction is a screenshot set, not a single image. The API lets one release job fan that set out across devices, stores, and locales.