Harmonize vs. Perusall

Both Harmonize and Perusall focus on engagement & community.

But what makes Harmonize a better solution?

A bigger, better toolset focused on discussion, collaboration and student engagement.

vs. Perusall's social annotation tool
Discussion Forums
ChatGPT + Plagiarism Detection
PDF Annotation
Video Annotation
Grid view

A bigger toolset yields better results & easier content discovery

Harmonize’s full suite of online discussion & collaboration tools provides students and instructors with everything they need to have vibrant online courses, including: image, video & PDF  annotationchatpolls, and Q&A. Content is structured naturally.

When we focus only on annotation, the basic PDF annotation features of Harmonize and Perusall are the same, as are the video annotation features. For PDFs,  instructors can upload a PDF and students can comment on it by highlighting and replying to each other’s comments.

Streamlined PDF annotation

Harmonize focuses on a simple, streamlined ability to upload a PDF with minimal instructor set up needed.

  • Harmonize works with any PDF even if you don’t have proper OCR layers in your PDF, and we also allow dropping pins on visuals in a PDF when there is no text to highlight.
  • We don’t allow students to bypass your LMS to access PDFs which breaks grading passback.
  • We adhere to the LMS supplied due date so students can view their due date in their LMS calendar and grading by instructors is in sync to be able to mark assignments late as necessary.
Save time for instructors

Other annotation capabilities

Perusall has a some more advanced features that could warrant additional complexity, and it’s up to your use case to determine if those are worth the additional configuration overhead.

Those features include:

  • Autograding a student’s annotations across 6 rubric categories.
  • Integration with bookstores and textbook manufacturers to annotate books students have to have purchased.
  • Partial Page/Chapter selection to segment readings when the full PDF is too long.
  • Annotating web based videos like Ted talks.
Send us feedback

Our goal is to be as accurate as possible, so if you feel there is something we should add, remove, or change, please let us know!

Contact us

Harmonize's Ultimate Online Collaboration Toolkit

rich multimedia icon Rich multimedia

Help students express themselves by posting images, video, audio, or text

flag icon Milestones

Help students see what’s expected of them, and when, so they make substantive, on-time contributions

student annotation icon Streamlined grading

Save time for instructors with LMS gradebook integration and autograding

Student facilitation

Give students control of discussions with tools that encourage them to contribute.

reactions & tagging icon Reactions & tagging

Improve participation with tools that bring everybody into the conversation

Image, Video & PDF Annotations

Provide interactive feedback and help students engage more deeply with content

Plagiarism detection

Integrate Harmonize with your plagiarism software to auto-detect unoriginal content


Enable students and instructors to communicate privately or in groups


Assess comprehension and knowledge with polls that engage the whole class

Q&A Boards icon Q&A boards

Let students answer each others’ questions with public boards

Harmonize integrates
with the tools you use today

Use Harmonize with any major LMS. Harmonize feels so familiar to instructors and students that there’s virtually no learning curve.
It’s simple to get started — Harmonize plugs right in!

To ensure academic integrity, Harmonize then integrates with the major plagiarism detection services, like Turnitin or Unicheck, to ensure that the students’ work is authentic.

See all integrations
Harmonize integrations
These institutions use Harmonize & see the results
10 x

increase in student-to-student collaboration

Read Case Study
56 %

increase in student engagement

Read Case Study
100 %

of instructors satisfied with discussions

Read Case Study

See Harmonize in Action

Learn how our online discussion and collaboration tools can elevate the learning experience at your institution.

Institutions of all sizes use Harmonize to improve student engagement, collaboration, and inclusivity in their online courses — all while saving instructors time. Harmonize seamlessly integrates with Canvas, Blackboard, Moodle and D2L Brightspace to enrich discussions within already existing platforms. See it for yourself in a personalized demo!

In our 30-minute call, you will:

  • Learn how Harmonize creates a more engaging and inclusive experience for students (and instructors!)

  • Share your goals, and we’ll discuss how Harmonize can help you reach them

  • See Harmonize’s suite of modern discussion and collaboration tools in action

Fill out the form on this page to book a call with a member of our team and see Harmonize in action!