Hey everyone! 👋 I'm Manfred, a German language instructor in Taiwan who also builds language learning apps. After submitting hundreds of App Store screenshots across twelve apps and various device sizes, I was tired of clunky workflows with Figma templates or expensive subscription tools. So, with the help of Claude Code, I built Screenshot Studio — a completely free, single-file screenshot generator that runs in your browser. No install, no account, no cloud uploads. What makes it different: 🔌 Works 100% offline — all fonts embedded, zero dependencies 📱 Pixel-perfect presets for iPhone 6.9", 6.7", iPad 13" and 12.9" 🎨 Device frames, gradient backgrounds, text overlays with 4 font choices ⚡ Batch upload + batch export with individual settings per screenshot 🌐 Full UI in English, German, and Traditional Chinese ✅ Exports opaque PNGs — no more App Store rejections for alpha channels The whole thing is a single 1 MB HTML file you can bookmark or save locally. It's open source (MIT), so feel free to fork and adapt it. I'd love to hear your feedback — what features would make this more useful for your workflow?

App Store Screenshot Studio

Free, offline App Store screenshot generator — one HTML file

Free, offline App Store screenshot generator — one HTML file