sui-ib/internalbeyond

Internal Beyond is a single-file personal digital space that runs entirely in your browser without requiring any installation or account. You download one HTML file, open it in a browser, and a private interactive environment becomes available to you. The project is designed for people who want a personal creative space that stays on their own device and does not send data to any server. The application includes several distinct areas. There is a personal blog and encrypted diary, an AI chat section that supports group-style conversations, and an AI letter-writing module for slower, correspondence-style exchanges. A central hub called Sui's Room presents a pixel-art style interactive room with four activities: a tea party featuring 25 combinations of drinks and desserts, a 78-card tarot reading with AI interpretation, an AI-driven interactive text adventure where you can customize your own story scripts, and a wardrobe system with six outfits for a character portrait. You can also customize the character art, background scenes, and tarot cloth through a DIY panel. To use the AI features, you bring your own API key from a provider such as Claude, GPT, DeepSeek, or Gemini. The key is stored only in your browser's local storage and is used directly to call the AI service. All other data, including diary entries and chat history, is stored in the browser's built-in IndexedDB database and never uploaded anywhere. For users who cannot access overseas AI providers directly, the app also supports custom API endpoint configurations so that relay services can be used instead. The app works on any device with a modern browser, including phones and tablets running iOS, Android, or HarmonyOS. There is also a fully self-contained single-file version that embeds all images and code, making it easy to transfer between devices without needing to keep a folder structure intact. The README is written in both Chinese and English. The project is an individual creative work by a designer named Sui, available for personal use but not for commercial redistribution.