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Introduction

Hypothesis is a versatile online annotation tool designed to foster collaborative reading and active learning. It allows students, educators, and researchers to annotate web pages, PDFs, eTexts, images, and videos directly within a browser or LMS. Key features include:

  • Collaborative Annotation: Enables multiple users to highlight and comment on the same document, fostering discussions and knowledge sharing.
  • LMS Integration: Seamlessly integrates with popular Learning Management Systems, providing a unified learning environment.
  • Versatile Content Support: Supports annotation on various content types, including web pages, PDFs, eTexts, images, and videos.
  • AI Literacy Support: Helps students engage with course materials and develop critical reading skills in the age of AI.
  • Workforce-Ready Skills: Prepares students for the modern workplace by enhancing their ability to analyze, communicate, and problem-solve in real-time.

Use cases include enhancing student engagement, facilitating peer reviews, supporting research collaboration, and building digital literacy skills.

Latest News

Hypothesis Product Update | Latest Features & Enhancements

Hypothesis Product Update | Latest Features & Enhancements

8/5/2026

You can find more information about the integration here. Instructors at participating schools are now also able to create Hypothesis assignments in their LMS using documents from VitalSource’s extensive collection of texts and eBooks. For more information on using Hypothesis with VitalSource, pleas...

Hypothesis Press | News and Media Coverage

Hypothesis Press | News and Media Coverage

8/5/2026

But for PDFs, webpages or other artifacts, they may need a tool such as Hypothesis, a free browser extension that allows users to make private, semiprivate or public annotations. (Update: The browser extension is free for users on the web; schools that integrate the service into their learning manag...

Product Updates Archives : Hypothesis

Product Updates Archives : Hypothesis

8/5/2026

Chris Shaw joins our product team, where he’ll coordinate how to augment Hypothesis to move social annotation forward. Learn about Chris’s career arc, why he’s excited about Hypothesis, and his takes on bots, community building, huskies, and more.

Hypothesis | The #1 Social Annotation Tool for Higher Education

Hypothesis | The #1 Social Annotation Tool for Higher Education

8/5/2026

Instructors set up assignments in minutes, interact with students directly over course materials, and track engagement through the Hypothesis reporting dashboard — all without leaving Canvas, Blackboard, Moodle, or D2L. ... Associate Professor of Teaching/Instruction Temple University Marcia Bailey ...

Hypothesis Status | Check Service Updates & Outages

Hypothesis Status | Check Service Updates & Outages

8/5/2026

If you’re unable to see the status above, click the button below to be redirected to our Pingdom status page for the latest updates. ... Ready to experience the Hypothesis transformation?

Alternatives

  • Perusall

    Perusall is an online social annotation tool specifically designed for collaborative reading and discussion of texts in educational settings.

  • Kami

    Kami offers a comprehensive suite of digital annotation and markup tools for PDFs and documents, widely used for interactive learning.

  • Diigo

    Diigo provides social bookmarking, web highlighting, and sticky notes for annotating web pages and PDFs, allowing for personal and group collaboration.

  • Zotero

    Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research, including robust PDF annotation features.

  • Mendeley

    Mendeley is a reference manager that also offers PDF annotation, organization, and collaborative features for researchers and academics.

  • LiquidText

    LiquidText provides advanced document analysis and annotation capabilities, allowing users to link ideas and notes across multiple sources for deeper understanding.

  • Liner

    Liner is a browser extension that allows users to highlight and annotate web pages and PDFs, saving them for later review and sharing.

  • Google Docs (with comments)

    Google Docs offers real-time collaborative document editing with built-in commenting and suggestion features, enabling direct feedback on text.

  • Notion

    Notion is a versatile workspace where users can embed various content types and add comments, providing a flexible platform for collaborative content engagement and knowledge management.

  • Padlet

    Padlet is a collaborative digital canvas where users can post, organize, and comment on various media, serving as a visual annotation and discussion board.

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