Marginote — Highlight & Annotate

Highlight text on any page in 4 colors, attach notes, and build a searchable personal annotation library. 100% local — zero network

Marginote turns any page into your own annotated margin. Select text, pick one of four colors, drop in a note if it matters, and it's saved to a personal library you can search later — organized by site and page, right in your browser. WHAT IT DOES - Highlight any selected text on any webpage in 4 distinct colors, applied instantly from a small toolbar that appears where you're reading - Attach a note to any highlight by clicking it — useful for capturing why a passage mattered, not just that it did - Highlights persist on the page, so they're still there the next time you visit - Browse your full annotation library in a dedicated page, organized by domain and page - Search across highlights, notes, pages, and domains to find a passage again - Export your entire library as Markdown or JSON whenever you want your data out HOW IT WORKS Select text on any page, pick a color from the toolbar that pops up, and the highlight is saved automatically. Click any existing highlight to reopen it and add or edit a note. Open the full library from the popup to search, review, or export everything you've collected. PRIVATE BY DESIGN Marginote makes zero network requests — everything you highlight, note, and search stays stored locally in your browser. There's no account, no sync server, and nothing is ever sent anywhere.