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Highlight text, add notes, and attach images on any webpage. Everything stored locally — no account, no cloud, no tracking. Markr is a privacy-first web highlighter and annotation tool. Select any text on any webpage, highlight it in your color of choice, add a note, attach an image reference, and organize everything with tags — all stored locally on your device with no account required. Your data never leaves your browser. Every annotation is saved in your browser's local storage. Nothing is transmitted to any server, ever. No sign-up, no sync, no tracking. FREE FEATURES Highlight text in 4 colors (yellow, green, blue, pink) Add notes to any highlight Attach image URLs with captions Highlights restore automatically when you revisit pages Works on any http or https webpage Right-click → Highlight with Markr Up to 100 annotations MARKR PRO — $9 one-time Everything in Free, plus: Unlimited annotations Tags and tag filtering Full-text search across all annotations Sort by newest, oldest, or by page Export to Markdown, JSON Custom highlight colors All your annotations in one panel across every tab HOW IT WORKS Visit any webpage Select text you want to highlight Click a color in the toolbar that appears Click the highlight to add a note or image Open the side panel to see all your annotations Highlights restore automatically the next time you visit the page, even after a browser restart. PRIVACY BY DESIGN Built by ALTRU.dev ("Code for Humanity") — a portfolio of privacy-first tools for researchers, students, and anyone who values owning their own data. No account required — ever No analytics or telemetry No external servers Inspect your data anytime in browser DevTools Delete everything with one button Uninstalling removes all data What’s new: Added the new Markr logo and updated extension icons. Improved highlight saving and restoring after page reloads. Improved page and annotation counts in the popup and side panel. Added visible note editing with a clear Save note button. Made Jump to highlight easier to see with a brighter flash effect. Made Clear page and Clear ALL controls more visible in the side panel. Added side panel footer links to other Altru/Dweav extensions. Restored the linked Developed by Altru.dev / Copyright 2026 footer attribution. Improved Pro upgrade behavior so the subscription prompt is closable and does not open automatically. Improved handling of malformed or older annotation records. Cleaned up packaging and removed stray files from the extension bundle. Privacy policy: https://altru.dev/markr/privacy