Highlight websites, PDFs, and EPUBs. Take reading notes, organize by course, and search your annotations.
Users
11
+3 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
1
0 in 30 days
Store rank
#193K
#162K among extensions
Version
1.2.0
updated 18 Sep 2026
Users
monthly, 1 months
Latest, 21 Oct 2026:11 usersMove the mouse over the chart for any month
Ratings count
monthly, 1 months
Latest, 21 Oct 2026:1 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About Marginalia — Study Notes & Highlights
Whether you need to complete reports, annotate a book for school, or organize articles for a big project, Marginalia will be there as your personal extension to store and label all of your annotations.
Using highlight features, sticky notes, labels, folders, and anything else you could possibly need to successfully annotate your book, article, or website, Marginalia saves all of your annotations, making windows with three hundred tabs a thing of the past.
We're always adding features and improvements depending on feedback, but here's what you can expect for now:
- PDF/EPUB Uploads and Annotations - Have a book in the form of a PDF/EPUB that you want to annotate with your thoughts? No problem. Marginalia allows you to upload your own documents to the library.
- Highlighters, sticky notes, margin notes, tabs, flags, underlines, and more
- Annotations for websites, articles, and online books
- Organization systems including folders, labels, and bookmarks
- A search system that makes it easy to find exactly what you were looking for
Marginalia can be used for help with research reports, book annotations, thought collection, or general note-taking. Whatever you use it for, we hope you have a happy annotation experience!
Update 1.2.0:
- Resize and drag around the annotation panel as needed.
- Enjoy new callout, quote emphasis, sticker, strikethrough, and passage boxing features.
- Enhanced display and customization of sticky notes and margin notes.
- Distinct, stylized flags, bookmarks, and tabs.