openseadragon/openseadragon
An open-source, web-based viewer for zoomable images, implemented in pure JavaScript. observed · 2026-08-28
Health v2 · maintenance only
94/100
- Activity 99
- Release rhythm 84
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-02. Adoption (stars, forks) is never an input.
- gap_med: 81.5
- age_days: 4962
- days_rel: 27
- days_push: 7
- n_releases_24m: 5
Adoption not part of the score
3500 stars · 701 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
OpenSeadragon is an open-source, web-based viewer for high-resolution zoomable images, implemented in pure JavaScript for desktop and mobile. It supports multiple tile source protocols including DZI, IIIF, Zoomify, TMS, and OpenStreetMap, and is extensible via plugins.
Use cases
- display zoomable high-resolution images in the browser
- embed a IIIF image viewer in a digital library or archive site
- view deep zoom DZI images on desktop and mobile
- build a map-like tiled image viewer with pan and zoom
- view large microscopy or scanned document images on the web
- add smooth zoomable image galleries to a website
When to choose
- you need to serve very large or high-resolution images with smooth zooming in a web app
- your images come from IIIF, DZI, Zoomify, TMS, or OSM tile servers
- you need a pure JavaScript, dependency-free viewer that works on desktop and mobile
- you want an extensible viewer with a plugin ecosystem and custom tile source support
When to avoid
- you only need to display small static images without zoom or pan
- you need server-side image processing or tiling generation (OpenSeadragon only views pre-tiled images)
- you need a native mobile or desktop application rather than a web-based viewer
Facets
library · maturity stable
image-processing ui-components frontend-framework web-development frontend graphics image-processing browser cross-platform zoomable-images deep-zoom iiif image-viewer tile-sources pan-and-zoom high-resolution-images javascript mobile
3 sources
- readme: https://github.com/openseadragon/openseadragon · fetched 2026-08-28 · 44554f8110f0
- homepage: http://openseadragon.github.io/ · fetched 2026-08-29 · 386c77fce91b
- registry_npm: https://registry.npmjs.org/openseadragon · fetched 2026-08-29 · e871cdbb2c8c
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| openseadragon/openseadragon | main | 94 |
For agents
markdown · JSON · MCP: product_card(name="openseadragon/openseadragon")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem