App Store Connect

App Store Connect is Apple's official web portal where developers manage every aspect of an iOS, iPadOS, macOS, watchOS, or tvOS app on the App Store. From the same dashboard, teams upload builds (or accept them from Xcode Cloud), edit localized metadata, manage in-app purchases and subscriptions, schedule phased releases, run Product Page Optimization experiments, and review the App Analytics that Apple makes available. For screenshots specifically, App Store Connect enforces strict per-device size requirements: the 6.7-inch iPhone and 12.9-inch iPad sizes are the canonical ones the system scales down from when device-specific assets are missing. Screenshots must be JPEG or PNG, free of alpha transparency, and within 30 MB per file. App Store Connect also exposes an App Store Connect API for programmatic uploads — most automation pipelines (including Fastlane deliver) drive that API rather than the web UI, so teams can ship screenshots and metadata for dozens of locales without manual clicking. Understanding the App Store Connect data model — apps, app versions, localizations, screenshot sets — is a prerequisite for any serious ASO automation.