From my experience with Diigo, I found it excels at organizing and annotating web research efficiently. The ability to highlight and add sticky notes directly on web pages and PDFs makes it invaluable for deep research and study. Its group collaboration features are particularly useful for teams working on shared projects or educators facilitating discussions. However, the free plan limits storage and advanced features, which might require upgrading for heavy users. Overall, if you need a reliable tool to manage and share online resources with annotation capabilities, Diigo delivers a solid, user-friendly experience.
Diigo Social Bookmarking Tool for Research, Annotation, and Collaboration
Diigo is a social bookmarking and web annotation tool that allows users to save, highlight, and organize web pages and PDFs, collaborate in groups, and access their content across devices.
- Best for
- Research and Knowledge Management
- Key capability
- Social Bookmarking

What is Diigo?
Diigo is a social bookmarking and web annotation tool designed to help users collect, organize, highlight, and share online resources. It enables individuals and teams to save web pages, add sticky notes and highlights, and collaborate on research or content curation projects. Diigo integrates with browsers and mobile devices to provide seamless access to annotated content anywhere.

Key features of Diigo
Diigo offers features such as bookmarking, web page highlighting, sticky notes, PDF annotation, group collaboration, tagging, and cloud-based storage. Its browser extensions and mobile apps make it easy to capture and organize information on the go.
Social Bookmarking
Save and organize web pages with tags and lists for easy retrieval.
Web Page Annotation
Highlight text and add sticky notes directly on web pages and PDFs.
Group Collaboration
Share bookmarks and annotations within groups to facilitate teamwork.
Cloud Sync
Access your saved content and annotations across devices via cloud storage.
Browser Extensions and Mobile Apps
Seamless integration with Chrome, Firefox, iOS, and Android platforms.
Pros and cons of Diigo
Pros
- Easy-to-use web annotation and bookmarking
- Supports collaboration with groups
- Cross-platform availability with browser extensions and mobile apps
- Cloud syncing keeps data accessible anywhere
Cons
- Free plan has limited storage and features
- User interface can feel dated compared to newer tools
- Advanced features require paid subscription
Key use cases for Diigo
Research and Knowledge Management
Users can save, organize, and annotate web pages and PDFs to manage research materials efficiently.
Collaboration and Teamwork
Teams can share annotated resources, highlight important information, and discuss insights within groups.
Content Curation
Marketers and content creators can collect and organize relevant online content for campaigns or projects.
Educational Use
Students and educators can highlight and comment on web content to facilitate learning and group discussions.
Personal Knowledge Base
Individuals can build a personal library of bookmarked and annotated web resources for future reference.
How Diigo works
- 1
Create an Account
Sign up for a free or paid Diigo account to start saving and annotating web content.
- 2
Install Browser Extension or Mobile App
Add the Diigo extension to your browser or download the mobile app for easy access.
- 3
Save and Annotate
Bookmark web pages, highlight text, add sticky notes, and annotate PDFs directly in your browser.
- 4
Organize with Tags and Lists
Use tags and lists to categorize and manage your saved content efficiently.
- 5
Collaborate and Share
Create groups to share annotated resources and collaborate with team members or classmates.
Who is using Diigo
Diigo pricing
Basic
Free
Limited bookmarks and annotations with basic features.
Standard
$5/month
Increased storage, advanced annotation tools, and group collaboration.
Professional
$12.50/month
Full feature set including priority support and enhanced team management.
Plans and prices are as published by the vendor and can change. Check the official site before you buy. Open the pricing page (opens in a new tab)
Frequently asked questions about Diigo
Yes, Diigo offers a free Basic plan with limited features suitable for casual users.
Yes, you can highlight and add sticky notes to PDFs within Diigo.
Diigo has mobile apps for both iOS and Android devices.
Yes, Diigo supports group collaboration where members can share and annotate resources.
This tool is designed to help users accomplish its core tasks more efficiently. It is typically used by individuals or teams looking to improve productivity and workflow.
Some tools offer a free plan or trial with limited features. Availability can vary, so confirm on the official website.
Yes, it can help with that use case depending on how you configure it and what features are available. You’ll get the best results with clear inputs and a defined goal.
It depends on your specific needs and how you plan to use the tool. The official website and documentation are the best sources for the latest details.
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