ContextLion

Turn any webpage into clean, structured, AI-ready context.

🦁 ContextLion：將任何網頁一鍵轉換為乾淨、結構化的 AI 脈絡與 GFM Markdown！ 在向 ChatGPT、Claude、Gemini 或 DeepSeek 提問時，直接複製網頁常常夾帶雜亂的導航列、廣告、頁尾與彈窗，不僅浪費 LLM 的 Context Window 與 Token 費用，還容易引起「迷失在中間 (Lost in the Middle)」問題。 ContextLion 是專為 AI 工作流設計的擴充功能，100% 本地運算（Local-First），一鍵去除干擾元素，生成排版優雅的 GitHub Flavored Markdown，並精準計算中英文字元 Token 消耗！ ⚡ 一鍵生成 AI 最佳化脈絡 (One-Click AI Context) • 智慧文章提取：採用 Mozilla Readability 核心演算法，精準擷取文章本體、標題、作者與發布日期。 • 雜訊徹底淨化：自動移除廣告看板、導覽列、相關文章推薦、側邊欄與社群分享按鈕。 • 自動過濾肥大圖片：智慧過濾 Base64 Data URL 內嵌圖片，避免單張圖片吃掉數萬 Token。 ✨ 內建 AI 提示詞模板 (Built-in Prompt Presets) • 一鍵套用專業 Prompt 格式，複製後直接貼進 AI 對話框即可開始： - ⚡ 執行摘要 (TL;DR Executive Summary) - 🎯 核心重點與待辦事項 (Key Action Items & Takeaways) - 👶 深入淺出白話解釋 (Explain Like I'm 5) - 🌐 繁體中文在地化專業翻譯 (Traditional Chinese Translation) - 💻 程式碼與 API 規格提取 (Code & API Schema) • 支援自訂 Prompt：可自由新增、修改與刪除您的常用 Prompt 模板。 🎯 外科手術式元素選取器 (Precision Element Picker) • 只需要網頁其中一部分？啟動視覺選取器，滑鼠移至任意區塊（如特定的比較表格、程式碼片段或社群貼文），點擊即可精準轉換為 Markdown，不受全頁面干擾！ 📦 多分頁脈絡打包與批次匯出 (Multi-Tab Context Pack) • 跨網頁研究利器：一次勾選瀏覽器中的多個研究分頁，自動聚合總 Token 數。 • 批次打包：支援一鍵複製為合併的單一 AI 脈絡，或匯出為包含結構化目錄的 ZIP 壓縮檔（.zip）。 🔒 100% 本地處理與零隱私追蹤 (Zero Telemetry) • 無後端伺服器：所有 DOM 解析、Markdown 轉換與 Token 計算完全在您的本機瀏覽器內完成。 • 零遙測、零數據收集：絕無埋設 Google Analytics 或任何第三方追蹤代碼。 • 您的網頁瀏覽紀錄與內容絕不離開您的電腦！ 🦁 ContextLion: Turn any webpage into clean, structured AI context and GitHub Flavored Markdown in one click! When copying content from websites into ChatGPT, Claude, Gemini, or DeepSeek, raw web pages are loaded with cluttered navigation menus, banner ads, cookie popups, and sidebar links. This bloat squanders your LLM's precious context window, wastes tokens, and triggers the "Lost in the Middle" phenomenon, degrading AI response accuracy. ContextLion is built specifically for AI-augmented workflows. Operating with an uncompromising 100% Local-First architecture, it surgically extracts core article content, eliminates all noise, generates elegant GitHub Flavored Markdown, and estimates CJK & Latin token consumption in real time! ⚡ One-Click AI-Optimized Context • Intelligent Article Extraction: Powered by the industry-standard Mozilla Readability algorithm to capture the article body, title, author, and publication timestamp. • Noise Elimination: Automatically purges banner ads, sticky headers, related articles, sidebars, and tracking widgets. • Image Bloat Protection: Strips heavy Base64 Data URL images automatically, preventing a single embedded image from devouring tens of thousands of tokens. ✨ Built-in AI Prompt Presets • Wrap extracted context into proven, production-grade prompt templates ready to paste into any LLM: - ⚡ Executive Summary (TL;DR) - 🎯 Key Action Items & Strategic Takeaways - 👶 Explain Like I'm 5 (ELIF) - 🌐 Professional Translation (Traditional Chinese / Multi-language) - 💻 Code Architecture & API Schema Extraction • Custom Prompt Builder: Add, edit, and organize your own reusable prompt presets. 🎯 Surgical Element Picker • Need just a specific table, benchmark, or code snippet? Activate the interactive visual picker. Hover over any DOM section and click to capture only that element as pristine Markdown—completely bypassing the rest of the page. 📦 Multi-Tab Context Pack & Batch ZIP Export • Power research made simple: Select multiple open research tabs across various domains. • Aggregated Token Counter: View real-time combined token counts across all selected tabs. • Export Flexibility: Copy as a single unified AI prompt context, or download as a structured ZIP archive (.zip) containing individual Markdown files. 🔒 100% Local-First & Zero Telemetry • No Remote Backend: All DOM sanitization, HTML-to-Markdown transformations, and token math happen entirely within your local browser runtime. • Zero Analytics: No Google Analytics, no Sentry, no Mixpanel, and zero telemetry beacons. • Your reading habits, URLs, and research data never leave your device! 🛡️ PERMISSIONS & PRIVACY PROMISE ContextLion strictly follows the Principle of Least Privilege: • activeTab / scripting: Only reads DOM content when you explicitly click the extension or launch the element picker. • storage / unlimitedStorage: Stores your preferences and local history solely on your computer. • tabs: Only reads window tab titles during multi-tab Context Pack selection.