diff --git a/package-lock.json b/package-lock.json
index bbc6a6989d..2cf037ec42 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -24,7 +24,6 @@
         "jss-rtl": "^0.3.0",
         "lodash": "^4.17.11",
         "manifesto.js": "^4.2.0",
-        "normalize-url": "^4.5.0",
         "openseadragon": "^2.4.2",
         "prop-types": "^15.6.2",
         "re-reselect": "^4.0.0",
@@ -11573,15 +11572,6 @@
         "node": ">=0.10.0"
       }
     },
-    "node_modules/normalize-url": {
-      "version": "4.5.1",
-      "resolved": "https://registry.npmjs.org/normalize-url/-/normalize-url-4.5.1.tgz",
-      "integrity": "sha512-9UZCFRHQdNrfTpGg8+1INIg93B6zE0aXMVFkw1WFwvO4SlZywU6aLg5Of0Ap/PgcbSw4LNxvMWXMeugwMCX0AA==",
-      "license": "MIT",
-      "engines": {
-        "node": ">=8"
-      }
-    },
     "node_modules/npm-run-path": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/npm-run-path/-/npm-run-path-4.0.1.tgz",
@@ -23743,11 +23733,6 @@
       "integrity": "sha512-6eZs5Ls3WtCisHWp9S2GUy8dqkpGi4BVSz3GaqiE6ezub0512ESztXUwUB6C6IKbQkY2Pnb/mD4WYojCRwcwLA==",
       "dev": true
     },
-    "normalize-url": {
-      "version": "4.5.1",
-      "resolved": "https://registry.npmjs.org/normalize-url/-/normalize-url-4.5.1.tgz",
-      "integrity": "sha512-9UZCFRHQdNrfTpGg8+1INIg93B6zE0aXMVFkw1WFwvO4SlZywU6aLg5Of0Ap/PgcbSw4LNxvMWXMeugwMCX0AA=="
-    },
     "npm-run-path": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/npm-run-path/-/npm-run-path-4.0.1.tgz",
diff --git a/package.json b/package.json
index 84b34eb94d..4e4f732456 100644
--- a/package.json
+++ b/package.json
@@ -48,7 +48,6 @@
     "jss-rtl": "^0.3.0",
     "lodash": "^4.17.11",
     "manifesto.js": "^4.2.0",
-    "normalize-url": "^4.5.0",
     "openseadragon": "^2.4.2",
     "prop-types": "^15.6.2",
     "re-reselect": "^4.0.0",
diff --git a/src/lib/CanvasWorld.js b/src/lib/CanvasWorld.js
index 7df30b0208..bbc62d9548 100644
--- a/src/lib/CanvasWorld.js
+++ b/src/lib/CanvasWorld.js
@@ -1,4 +1,3 @@
-import normalizeUrl from 'normalize-url';
 import MiradorCanvas from './MiradorCanvas';
 
 /**
@@ -136,13 +135,10 @@ export default class CanvasWorld {
   /** Get the IIIF content resource for an image */
   contentResource(infoResponseId) {
     const miradorCanvas = this.canvases.find(c => c.imageServiceIds.some(id => (
-      id && infoResponseId && normalizeUrl(id, { stripAuthentication: false })
-        === normalizeUrl(infoResponseId, { stripAuthentication: false }))));
+      id && infoResponseId && (new URL(id).href === new URL(infoResponseId).href))));
     if (!miradorCanvas) return undefined;
     return miradorCanvas.imageResources
-      .find(r => (
-        normalizeUrl(r.getServices()[0].id, { stripAuthentication: false })
-        === normalizeUrl(infoResponseId, { stripAuthentication: false })));
+      .find(r => (new URL(r.getServices()[0].id).href === new URL(infoResponseId).href));
   }
 
   /** @private */
diff --git a/src/state/sagas/iiif.js b/src/state/sagas/iiif.js
index 3a613ee934..cda18bb5b0 100644
--- a/src/state/sagas/iiif.js
+++ b/src/state/sagas/iiif.js
@@ -2,7 +2,6 @@ import {
   all, call, put, select, takeEvery,
 } from 'redux-saga/effects';
 import { Utils } from 'manifesto.js';
-import normalizeUrl from 'normalize-url';
 import ActionTypes from '../actions/action-types';
 import {
   receiveManifest, receiveManifestFailure, receiveInfoResponse,
@@ -79,8 +78,7 @@ function* fetchIiifResourceWithAuth(url, iiifResource, options, { degraded, fail
 
   const id = json['@id'] || json.id;
   if (response.ok) {
-    if (normalizeUrl(id, { stripAuthentication: false })
-      === normalizeUrl(url.replace(/info\.json$/, ''), { stripAuthentication: false })) {
+    if (new URL(id).href === new URL(url.replace(/info\.json$/, '').href)) {
       yield put(success({ json, response, tokenServiceId }));
       return;
     }