This example uses OpenLayers v10.9.0. The latest is v.
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#### IIIF Image API

IIIF 1 IIIFImageAPI 1 tilesource 1

#####

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 Map from 'ol/Map.js';
    import View from 'ol/View.js';
    import IIIFInfo from 'ol/format/IIIFInfo.js';
    import TileLayer from 'ol/layer/Tile.js';
    import IIIF from 'ol/source/IIIF.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": "10.9.0"
      },
      "devDependencies": {
        "vite": "^3.2.3"
      },
      "scripts": {
        "start": "vite",
        "build": "vite build"
      }
    }