diff --git a/src/ol/source/ImageArcGISRest.js b/src/ol/source/ImageArcGISRest.js
index 9f160bfc15..a7ef921e35 100644
--- a/src/ol/source/ImageArcGISRest.js
+++ b/src/ol/source/ImageArcGISRest.js
@@ -18,16 +18,16 @@ import {appendParams} from '../uri.js';
  * @property {null|string} [crossOrigin] The `crossOrigin` attribute for loaded images.  Note that
  * you must provide a `crossOrigin` value if you are using the WebGL renderer or if you want to
  * access pixel data with the Canvas renderer.  See
- * https://developer.mozilla.org/en-US/docs/Web/HTML/CORS_enabled_image for more detail.
+ * {@link https://developer.mozilla.org/en-US/docs/Web/HTML/CORS_enabled_image} for more detail.
  * @property {boolean} [hidpi=true] Use the `ol/Map#pixelRatio` value when requesting the image from
  * the remote server.
  * @property {import("../Image.js").LoadFunction} [imageLoadFunction] Optional function to load an image given
  * a URL.
- * @property {Object<string,*>} params ArcGIS Rest parameters. This field is optional. Service
+ * @property {Object<string,*>} [params] ArcGIS Rest parameters. This field is optional. Service
  * defaults will be used for any fields not specified. `FORMAT` is `PNG32` by default. `F` is
- * `IMAGE` by default. `TRANSPARENT` is `true` by default.  `BBOX, `SIZE`, `BBOXSR`, and `IMAGESR`
+ * `IMAGE` by default. `TRANSPARENT` is `true` by default.  `BBOX`, `SIZE`, `BBOXSR`, and `IMAGESR`
  * will be set dynamically. Set `LAYERS` to override the default service layer visibility. See
- * http://resources.arcgis.com/en/help/arcgis-rest-api/index.html#/Export_Map/02r3000000v7000000/
+ * {@link http://resources.arcgis.com/en/help/arcgis-rest-api/index.html#/Export_Map/02r3000000v7000000/}
  * for further reference.
  * @property {import("../proj.js").ProjectionLike} projection Projection.
  * @property {number} [ratio=1.5] Ratio. `1` means image requests are the size of the map viewport,