Diigo is the #1 online service for annotating, bookmarking, archiving and sharing webpages, plus a lot more! It has won numerous accolades.
With free browser extensions and apps for Firefox/Chrome/IE/Safari, and mobile apps on iPhone/IPad/Android, Diigo enables you to collect everything, helps you remember, allows access anywhere, and makes sharing and collaboration easy.
The extensions below can be used alone to meet your specific needs, or together to do more for you. Several of these extensions can also be used without registering.
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Capture the whole page or any portion, annotate it with rectangles, circles, arrows, lines and text, blur sensitive info, one-click upload to share. And more!
Enable multi-color highlighter and post-it notes as your reading aids; Capture the page or any portion to share or archive; Save everything online to allow access anywhere.