Hypothesis

Web · API · Extension

Freedom report

Two barsScore 6.4

  • Free tierA free tier is on its own pricing page
  • Open codeNo open-source code on record
  • Runs widely1 of 6 device platforms
  • DocumentedPlans, terms and facts published

Hypothesis adds collaborative annotations to digital course materials, so learners can highlight passages, ask questions and discuss material in context. Users can create private highlights, page notes and threaded replies, and add tags to annotations. Supported material includes web pages, PDFs, EPUB files, YouTube videos, and content from VitalSource and JSTOR. Colleges and universities can connect Hypothesis to Canvas, Blackboard, Moodle, D2L Brightspace and Sakai through LTI 1.3; annotations can also sync with LMS gradebooks, including Canvas SpeedGrader. A free account is available for personal use and collaboration. The Free plan costs 0.00 USD per free, billed per student/yearly, and includes core annotation, private groups and self-service support. The web app works with a Chrome extension on Chrome and other Chromium browsers, or a bookmarklet in Firefox and Safari. Hypothesis also offers API access and export to JSON, plain text, CSV and HTML, with JSON import. It was founded as an open-source project in 2011.

Who it is for

Hypothesis suits learners and educators who want to discuss digital materials alongside the passages they are studying. Its institutional integrations are relevant to colleges and universities using supported learning management systems.

What is good

  • Annotations support private highlights, notes, tags and threaded replies.
  • Supports web pages, PDFs, EPUB files and YouTube videos.
  • LTI 1.3 integrations include Canvas, Moodle and Sakai.
  • Free plan includes core annotation and private groups.

What to know first

  • Bronze package caps seats at 1,000.
  • Silver package caps seats at 2,000.
  • Gold package caps seats at 3,000.

Verdict

Hypothesis brings annotations and discussion into course materials, with both personal use and institutional LMS integrations listed. Check the seat limits and package details when considering an institutional rollout.

Hypothesis plans and pricing

All plans
Free Free Per student/yearly Core annotation · Private groups · Self-service support web.hypothes.is · 30 Sept 2026
Silver Not published Per student/yearly Core annotation · LMS integration · Up to 2,000 user seats · Advanced analytics · Auto-grading · Hypothesis Academy web.hypothes.is · 30 Sept 2026
Gold Not published Per student/yearly All Silver features · Up to 3,000 seats · Unlimited training · Dedicated CSM · Premium support · Hypothesis Academy · Quarterly check-ins web.hypothes.is · 30 Sept 2026
Bronze Not published Per student/yearly Core annotation · LMS integration · Up to 1,000 user seats · Partner workshops · 1 annual training session · Standard email support web.hypothes.is · 30 Sept 2026
Custom solution Not published Contact sales for a custom solution Custom solution; page does not specify features or price web.hypothes.is · 30 Sept 2026

Compared on web annotation tools

Free plan
Yes
Annotation modes
both
Collaborative review
Yes
Guest access
Yes
Document support
both
Browser capture
Yes
Team seats
1,000 seats
Export options
JSON, plain text, CSV, and HTML; import from JSON

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