Annotation

Hypothes.is: An Open-Source Web Annotation Tool Compliant with W3C Standards

Introduction Close reading and annotation of texts are fundamental practices in humanities research. In the digital age, tools are needed to realize these practices in the context of the web. Hypothes.is is an open-source annotation tool that enables highlights and comments on any web page. It complies with the W3C Web Annotation standard and is used across a wide range of fields including education, research, and journalism. It is released under the BSD license. ...

March 15, 2026 · 3 min · Nakamura

TETRAS-IIIF: Annotation, Video, and Multi-User Extensions for Mirador 4

What is TETRAS-IIIF? TETRAS-IIIF is a suite of plugins and tools for Mirador 4, developed primarily by Tetras Libre SARL, a French open-source company. The ecosystem extends Mirador with annotation editing, video support, and multi-user collaboration capabilities. These tools address limitations of the original mirador-annotations plugin and provide a modern foundation built on React 18/19 and MUI 5/7. Mirador Annotation Editor (MAE) Overview Mirador Annotation Editor (MAE) is an annotation creation and editing plugin for Mirador 4. It serves as a successor to mirador-annotations and is released under the Apache 2.0 license. ...

March 15, 2026 · 3 min · Nakamura

Exporting Web Annotations via the Hypothes.is API and Converting to TEI/XML

Introduction Hypothes.is is an open-source annotation tool that allows you to add highlights and comments on web pages. It can be easily used through browser extensions or JavaScript embedding, but there are cases where you may want to back up accumulated annotations or utilize them in other formats such as TEI/XML. This article introduces how to export annotations using the Hypothes.is API and convert them to TEI/XML. Obtaining an API Key Log in to Hypothes.is Go to Developer settings Generate an API key with “Generate your API token” Save the obtained key in a .env file. ...

February 28, 2026 · Updated: February 28, 2026 · 4 min · Nakamura

Creating Polylines Using the Polygon Tool in Annotorious v2

Overview This is a memo on how to create polylines using the polygon tool in Annotorious v2. Background The Annotorious v2 website is available at the following link. https://annotorious.github.io/getting-started/ As shown below, polygons can be drawn. However, a tool for drawing polylines in a similar manner did not appear to be provided, including the following plugin. https://github.com/annotorious/annotorious-v2-selector-pack Customization When a polygon like the following is created: The following JSON file is generated: ...

May 5, 2025 · Updated: May 5, 2025 · 2 min · Nakamura

Trying the mirador-annotations Plugin and SimpleAnnotationServer with Mirador 3

Overview mirador-annotations is a Mirador 3 plugin that adds annotation creation tools. https://github.com/ProjectMirador/mirador-annotations This time, I tried combining it with the following SimpleAnnotationServer, and this is a memorandum of the process. https://github.com/glenrobson/SimpleAnnotationServer Preparing SimpleAnnotationServer Follow the Getting Started guide below. https://github.com/glenrobson/SimpleAnnotationServer#getting-started When you access http://localhost:8888/index.html, the following screen is displayed. The endpoint appears to be http://localhost:8888/annotation/, which displays a list of registered annotations (initially empty). This endpoint will be used from Mirador 3. ...

August 18, 2023 · Updated: August 18, 2023 · 3 min · Nakamura