MarklyKit

Annotate any webpage with highlights, sticky notes, and drawings.

MarklyKit is a powerful web annotation and research companion for Chrome that turns any webpage into your personal workspace. Highlight important text, add sticky notes, blur sensitive information, draw directly on pages, organize everything into research folders, and — with Pro — plug your research straight into Claude or ChatGPT so an AI can search and reason over it. Whether you're researching, studying, reviewing content, preparing presentations, or collecting ideas, MarklyKit helps you capture insights in context and revisit them whenever you need. Unlike traditional note-taking tools that separate notes from the original source, MarklyKit keeps everything attached to the webpage itself. Your highlights, notes, drawings, and annotations are automatically saved per URL, allowing you to return to any page later and continue exactly where you left off. ✦ Key Features 🖍 Highlight Text Anywhere Select and highlight important sections on any webpage instantly. Semantic anchoring keeps highlights pinned to the exact text even after a site redesigns its layout. Perfect for research, studying, articles, and documentation. 📝 Sticky Notes Attach draggable notes directly to webpages. Save thoughts, reminders, comments, or ideas exactly where they matter. ✏️ Draw & Annotate Use freehand pen, marker, arrows, circles, and rectangles to sketch ideas, underline sections, or visually explain concepts directly on the page. 🔒 Blur Sensitive Information Blur private or sensitive information before sharing screenshots, exporting documents, or presenting webpages. Great for hiding personal data, emails, account details, or confidential content. 🏷 Tags & Folders Group related highlights and notes into colour-coded research folders and tag them for fast retrieval across thousands of pages. 🔎 Semantic Search Pro Find anything you've ever highlighted with natural-language search — no need to remember the exact words. 🤖 Claude & ChatGPT Connectors Pro A built-in MCP server lets you connect MarklyKit to Claude.ai with one-click OAuth, or to ChatGPT Plus/Pro as a custom connector in Developer Mode. Your highlights, sticky notes, folders, and tags become tools the AI can search and pull from — no copy-pasting your research into a chat box. ☁️ Cloud Sync Pro Highlights, folders, and sticky notes sync to your private MarklyKit cloud so they're accessible from PDF exports, AI connectors, and other devices. Drawings and blurs stay on-device since they're tied to a page's exact layout. 📄 Export to Clean PDF Pro Export annotated webpages into clean, shareable, citation-ready PDFs with your highlights, notes, source URL, and timestamps preserved. ⌨️ Keyboard Shortcuts & Floating Toolbar Cycle through tools with single keystrokes, such as P for Pen, M for Marker, and B for Blur. Drag the toolbar anywhere or snap it to any edge. 💾 Auto Save Per Website All annotations are automatically saved and linked to the webpage URL, so your work is always available when you revisit the page. 🎯 Built for Focus A minimal, distraction-free interface that works naturally alongside your browsing. One-click hide/show lets you reveal the original page whenever you want. ⚡ Fast & Lightweight Offline-first architecture — annotations write to your device instantly, then sync in the background on Pro. MarklyKit never slows down your browser. 🔐 Privacy Friendly Free accounts stay 100% device-local. Pro syncs only what powers exports and AI connectors — highlights, folders, and sticky notes — to your private MarklyKit cloud. Your data is encrypted in transit, only you can read it, and you can delete it at any time. ✦ Perfect For * Students taking notes from online resources * Researchers collecting insights from articles * Developers reviewing documentation * Writers organizing references * Designers reviewing webpages and UI * Professionals preparing reports and presentations * AI power users who want Claude or ChatGPT to reason over their own research * Teams collaborating on web content * Anyone who wants to save and annotate important information from the web ✦ Why MarklyKit? The web is full of valuable information, but most tools make it difficult to capture ideas in context — and even harder to bring that research into the AI tools you already use. MarklyKit bridges both gaps. You think, annotate, organize, and prepare content directly on top of the web, and Pro turns your saved research into a knowledge base that Claude and ChatGPT can query like any other tool. Instead of copying information into separate apps or pasting walls of text into a chat, you can interact with content where it already exists — and let your AI assistant reach in when you need it. Highlight. Annotate. Organize. Connect. Export. Turn the web into your personal AI-ready knowledge workspace with MarklyKit.