IIIF Image API

Enter info.json URL:

Example of a IIIF Image API source.

Example of a tile source for an International Image Interoperability Framework (IIIF) Image Service. Try any Image API version 1 or 2 service.

main.js

import IIIF from 'ol/source/IIIF.js';
import IIIFInfo from 'ol/format/IIIFInfo.js';
import Map from 'ol/Map.js';
import TileLayer from 'ol/layer/Tile.js';
import View from 'ol/View.js';

const layer = new TileLayer(),
  map = new Map({
    layers: [layer],
    target: 'map',
  }),
  notifyDiv = document.getElementById('iiif-notification'),
  urlInput = document.getElementById('imageInfoUrl'),
  displayButton = document.getElementById('display');

function refreshMap(imageInfoUrl) {
  fetch(imageInfoUrl)
    .then(function (response) {
      response
        .json()
        .then(function (imageInfo) {
          const options = new IIIFInfo(imageInfo).getTileSourceOptions();
          if (options === undefined || options.version === undefined) {
            notifyDiv.textContent =
              'Data seems to be no valid IIIF image information.';
            return;
          }
          options.zDirection = -1;
          const iiifTileSource = new IIIF(options);
          layer.setSource(iiifTileSource);
          map.setView(
            new View({
              resolutions: iiifTileSource.getTileGrid().getResolutions(),
              extent: iiifTileSource.getTileGrid().getExtent(),
              constrainOnlyCenter: true,
            }),
          );
          map.getView().fit(iiifTileSource.getTileGrid().getExtent());
          notifyDiv.textContent = '';
        })
        .catch(function (body) {
          notifyDiv.textContent = 'Could not read image info json. ' + body;
        });
    })
    .catch(function () {
      notifyDiv.textContent = 'Could not read data from URL.';
    });
}

displayButton.addEventListener('click', function () {
  refreshMap(urlInput.value);
});

refreshMap(urlInput.value);

index.html

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8">
    <title>IIIF Image API</title>
    <link rel="stylesheet" href="node_modules/ol/ol.css">
    <style>
      .map {
        width: 100%;
        height: 400px;
      }
    </style>
  </head>
  <body>
    <div id="map" class="map"></div>
    <div class="controls">
      <div id="iiif-notification">&nbsp;</div>
      <label for="imageInfoUrl">Enter <code>info.json</code> URL:</label>
      <input type="text" id="imageInfoUrl" value="https://iiif.ub.uni-leipzig.de/iiif/j2k/0000/0107/0000010732/00000072.jpx/info.json">
      <button id="display">Display image</button>
    </div>

    <script type="module" src="main.js"></script>
  </body>
</html>

package.json

{
  "name": "iiif",
  "dependencies": {
    "ol": "9.1.0"
  },
  "devDependencies": {
    "vite": "^3.2.3"
  },
  "scripts": {
    "start": "vite",
    "build": "vite build"
  }
}