RustChin: Persian Fonts & RTL for ChatGPT, Gemini, Claude and more...

RustChin is an open-source, privacy-first browser extension designed to provide seamless Right-to-Left (RTL) text direction, table layouts, and beautiful typography for AI chat platforms. Key Features and Differentiators: • 100% Ad-Free with No Message Tampering: Unlike other extensions, RustChin never injects promotional text, links, or hidden signatures into your prompts or AI responses. • Zero Keystroke Latency: Highly optimized DOM processing ensures fluid typing and smooth performance without browser freezes, even in very long conversations. • Native Tables & Numbered Lists: Automatically aligns data tables and table headers to proper RTL and formats ordered list numerals with authentic Persian digits. • Strict Code and Math Shielding: Preformatted code blocks, inline snippets, and mathematical equations remain strictly LTR and intact. • 5 Bundled Variable Fonts: Includes high-quality Persian variable fonts (Vazirmatn, Estedad, Sahel, Arad, and Mikhak) embedded directly in the extension for 100% offline use. • Custom System Font Support: Flexibility to use any font installed on your operating system (such as Shabnam, Samim, or custom corporate fonts). • 2-Column Bento Grid Popup: Clean, compact interface with no vertical scrollbar, featuring a live status indicator showing real-time connection to the active tab. • Keyboard Shortcut (Alt+Shift+X): Quickly toggle input direction for effortless bilingual prompt drafting. • Granular Typography Settings: Adjust font size and line height to match your reading preferences. Comprehensive AI Platform Compatibility: RustChin is engineered to calibrate text direction, table layouts, and Persian typography across modern web AI chat interfaces. The extension seamlessly integrates into conversational threads, dynamic prompt boxes, and structured responses without altering page layouts. Complete platform details and documentation are available on the official website. Privacy & Security: All text and font processing happens locally on your browser. RustChin contains zero analytics, zero tracking, and no external server connections. It never accesses, saves, or transmits your personal data, chat history, or credentials. The activeTab permission is strictly used to detect whether you are currently on a supported AI tab and display the live status indicator. RustChin is open-source under the MIT License. Official Website: https://rust-chin.ir/