Tools, Plug-ins and Integrations

These tools are created and maintained by the Hypothesis community. Some are code experiments, some are full implementations being adopted by users every day.  If you have a project or know of one that should be listed here, please let us know!

Learning Management Systems (LMS)



Description: An official Hypothesis application that enables integration with any LMS supporting IMS Learning Tools Interoperability (LTI), such as Blackboard Learn, Desire2Learn Brightspace, Instructure Canvas, Moodle, Sakai, and Schoology, to provide capabilities including single sign-on and automatic private group provisioning for each class.

Content Management Systems (CMS)



Screencast: (illustrates PDF activation)

Description: Built by Jake Hartnell and Benjamin Young. Adds the Hypothesis sidebar to your wordpress website. Converts links to PDFs in the Media folder to links.

WordPress Hypothesis aggregator


Description: A WordPress plugin that allows you to aggregate Hypothesis annotations on a single page or post on your WordPress blog.

OJS Hypothesis Plugin


Description: adds Hypothesis integration to the public article view of Open Journal Systems, permitting annotation and commenting.

Omeka Annotator


Description: A Hypothesis text annotation plugin for Omeka.


Description: A place to upload PDFs and other documents for annotation using Hypothesis, as well as a Google Drive plugin for PDFs.

Drupal, from Little Blue Labs


Description: This simple module embeds Hypothesis into your Drupal site.

Archiving and downloading annotations

Use any of the following community-provided tools to export (download) your annotations.

For note-taking apps

Send Hypothesis annotations directly into your notes.

Roam: (via RoamJS) Hypothesis Extension

Import your Hypothesis notes and highlights into Roam.


Readwise has a built-in integration with Hypothesis. Visit your syncs to set it up.

Obsidian: Obsidian Hypothesis Plugin

Obsidian Hypothesis (Community Plugin) is an unofficial plugin to synchronize Hypothesis web article highlights/annotations into your Obsidian Vault.

Alternatives for technical users
  • Gooseberry: A command line utility to generate a knowledge base from Hypothesis annotations
  • Annotation tools: python tools to link Hypothesis and Pinboard annotations to Obsidian
  • Chris Aldrich’s gist: retrieve your annotations into Obsidian (for templater plugin)

LogSeq: Logseq Hypothesis Plugin

Retrieve your online web annotations and insert them directly into Logseq. All you need to do is enter your API key, and then you can add all your annotations to your Logseq.

Org Mode: hypothesis.el

Import data from into Emac.

Online tools from the community

Standalone tools found on the web.


View annotations by user, group, URL, or tag. Export results to HTML, CSV, text, or Markdown. Screencast:

Hypothesis collector

Create google sheets with annotations based on search queries.

Chrome extensions

Grab Hypothesis annotations directly from your browser.

Hypothesis to Markdown bullet points

Browser extension for fetching and formatting annotations into markdown bullet points, ready for copying into Roam, Notion or similar apps.

For technical users

If you have some skills at the command line or in a text editor, these ones are for you!

Gooseberry CLI tool

A command line utility to generate a knowledge base from Hypothesis annotations. (Very slick, with Obsidian compatibility, too)

Hypotheiss + Steampipe

Steampipe is an open source CLI to instantly query cloud APIs using SQL. List annotations from Hypothesis.


Script to fetch annotations or Twitter threads and output Markdown that is suitable for Roam for macOS computers.


Place annotations on a Cloudant database for analysis.

Added functionality

Slack notifications


Description: Receive Slack notifications  made by specific users, or groups, or on specific urls or tags.

Hypothesis EPUB reader


Description: A mashup of the open source Hypothesis and Epub.js projects.

Annotran: Annotate to translate


Description: Annotran is an extension to the hypothesis annotation framework that allows users to translate web pages themselves and to view other users’ translations. Read about it here and here.

Annotation Powered Survey


Description: A toolkit for building online surveys that ask questions to which answers are annotations.

ClinGen Workflow


Description: An approach to annotation-powered biocuration.



Description: Copy top-level annotations from one URL (and/or group) to another.



Description: Rename Hypothesis tags.

Programming tools

Hypothesis Ruby Gem


Description: Unofficial ruby gem for the Hypothesis API.



Description: A lightweight Python API for



Description:  Python scripts for interacting with the Hypothesis API.



Description: Yet another Python wrapper for the Hypothesis API.



Description: An R package that allows users to add, search for, and retrieve annotation data.


Description: A simple PHP wrapper for the Hypothesis API.


Monitor the Hypothesis websocket in order to push realtime notifications to other channels.




Description: This tool finds RRIDs in articles, looks them up in the SciCrunch resolver and creates Hypothesis annotations that anchor to the RRIDs and display lookup results. More info here.



Description: The American Association for the Advancement of Science (AAAS) uses Hypothesis for graduate students to annotate articles using specific highlight colors and categories. More info here.

Extracting structured findings from scientific papers


Description: David Kennedy reviews the literature in his field and extracts findings, which are structured interpretations of statements in scientific papers. He’s using Hypothesis to create reports based on structured annotation. More here.

Hypothesis/Europe PubMed Central


Description: Bring annotations from two systems together in the context of a document.

Infinite Ulysses


Description: created by Amanda Visconti, Infinite Ulysses lets readers of James Joyce’s challenging novel Ulysses while annotating it with their questions and interpretations and perusing annotations from fellow readers.

Other ideas to try

Screen-reader-accessible annotation



Description: Use a hotkey to select an element, hear it spoken, and open the annotation editor.

Copy annotation to clipboard


Description: Copy the text of the annotation to the clipboard by clicking an icon.

Highlight groups with annotations


Description: Highlights the group name with a different color on the dropdown menu, when there are annotations on the group.

Group admin


Description: Enables a group of users who have given their H API keys to be subject to admin by an “admin user” who is the H user running the prototype extension. The admin user running can edit or delete annotations by subject users.

Controlled tagging

Description: Restrict tags to a controlled list.

Screencast: (manage the list in a Google doc, activate it on a per-Hypothesis-group basis)

Screencast: (source the list from an external ontology service)

Screencast: (embed a single-page app in the annotation body to enable full control of tag interaction and context)

Search/faceted navigation

Description: An early prototype of faceted navigation