English | 简体中文

📍 China | 🛠️ Independent Developer

I turn ideas across AI, mobile, and the web into shippable, maintainable, and user-friendly products—from interaction design to deployment.

• Web products & online tools - Building usable, reliable interactive web applications and shipping them.
• AI application integration - Bringing LLM capabilities into practical product and content workflows.
• Mobile development - Continuing native iOS and cross-platform Flutter development.
• Open source & knowledge sharing - Sharing practical experience through tools, courses, and technical writing.

• 🧩 Vecsy - Open Source SVG Editor & Vector Design Studio with live layer editing, preview, zoom, and undo/redo (Source)
• 🔗 Feishu to WeChat - One-click Feishu-to-WeChat article formatting tool (Source)
• 🗜️ ImgCompress - Safe, fast, fully browser-based image compression tool (Source)
• 🌍 Country Info - Look up country and region details in multiple languages (Source)
• 😀 Emoji Picker - Search, inspect, and copy emoji in multiple languages (Source)

🧰 Awesome Tools - Browse, search, and filter all the projects and online tools I maintain (Source).

• 📚 LLM Terms Workshop - Learn 30 core Large Language Model concepts (Source)
• 🧭 GitHub Course - Bilingual guided courses for understanding open-source projects through their code (Source)
• 📖 Word Root Workshop - Learn English vocabulary by breaking down roots, prefixes, and suffixes (Source)
• 📐 SVG Learning - Interactive SVG guide from syntax to production (Source)
• 🔍 JSON Viewer - Zero-dependency, browser-based JSON formatter and viewer with structured expand/collapse, field copying, and local parsing (Source)
• 🎞️ Animation Playground - A collection of 140+ pure CSS, SVG, and Canvas web animation effects with live browser previews and bilingual UI (Source)
• 🎬 Web Animation - Interactive demonstrations for the Web animation ecosystem, covering CSS, DOM, SVG, Canvas, WebGL/GPU, and popular animation frameworks (Source)
• 🧠 meta-skill - A collection of skills that teach AI agents how to think through first-principles generation and adversarial review
• 🔧 simple-gemini-cli - Simple command-line interface for Google Gemini API
• 📅 lunar-birthday-reminder - Lunar birthday management and reminder app with multiple implementations (Source)
• 🎬 youtube-live-translate - Real-time YouTube live stream translation tool
• 📡 ftp-server - Python FTP server with Web interface for easy file sharing
• 🌐 easy-ftp - FTP server with classic Web directory index interface
• 🎨 Kids Art Gallery - Static art gallery built with Astro for archiving and showcasing children's artwork
• 🧩 Name That UI - Bilingual visual dictionary for identifying UI elements, learning precise terminology, and generating prompts for coding agents (Source)
• 📰 NewsNow - A modern news aggregation platform (Source)
• 📸 text-snap - Text snapshot capture and OCR tool

• ▦ QR Tool - Generate, scan, and export QR codes (Source)
• #️⃣ File Hash Checker - Calculate and verify file hashes locally (Source)
• 🔤 Unicode Lookup - Look up Unicode characters and convert encodings (Source)
• 🪪 ID Card Parser - Parse and validate Chinese ID card numbers locally (Source)
• 🧮 Tax Calculator - Calculate Chinese individual income tax and annual bonuses (Source)
• 🏠 Mortgage Calculator - Calculate mortgage repayments and early repayments (Source)
• 🔌 Port List - Look up and browse common network ports (Source)
• 💴 RMB Words - Convert amounts between numbers and uppercase RMB words (Source)
• 📐 CSS Unit Converter - Convert CSS units in real time (Source)
• 📝 .gitignore Generator - Generate .gitignore files from technology-stack templates (Source)
• 🗂️ XML Viewer - Format and inspect XML (Source)
• 📊 CSV Viewer - Preview, filter, and export CSV (Source)
• 📄 YAML Viewer - Format and inspect YAML (Source)
• 🔐 JWT Decoder - Decode JWTs and check expiry (Source)
• 🖥️ HTML Viewer - Preview and edit HTML structure (Source)
• ↔️ Diff Viewer - Compare text differences (Source)
• 🧪 Regex Tester - Test regex matches and replacements (Source)
• ⏱️ Timestamp Converter - Convert timestamps and dates (Source)
• ⚙️ JSON to Code - Generate TypeScript, Go, and Python from JSON (Source)
• ⏰ Cron Viewer - Explain cron expressions and next runs (Source)
• 🔄 Data Converter - Convert JSON, YAML, XML, and CSV (Source)

• 📱 RFSegmentView - iOS-style segmented control for smooth view switching
• ⏳ RFLoadingView - Lightweight loading indicator with smooth animations

UIKit, Objective-C, Swift, Flutter, React Native

JavaScript / TypeScript, React, Vue, Next.js, Astro, static sites, and online tools

OpenAI, Claude, Gemini, RAG, and vector retrieval

Git/GitHub, Xcode, VS Code, and CI/CD

"Simple is better than complex" - I focus on clear, maintainable code and intuitive user experiences. Whether it is a mobile app, web product, or AI tool, I care most about solving real problems elegantly.