diff --git a/nav-app/package-lock.json b/nav-app/package-lock.json
index e93b3e98..c0cb837c 100644
--- a/nav-app/package-lock.json
+++ b/nav-app/package-lock.json
@@ -27,6 +27,7 @@
         "core-js": "^3.31.1",
         "d3": "^7.8.5",
         "d3-svg-legend": "^2.25.6",
+        "detect-browser": "^5.3.0",
         "file-saver": "^2.0.5",
         "load-json-file": "^7.0.1",
         "mathjs": "^12.4.2",
@@ -7708,6 +7709,11 @@
         "npm": "1.2.8000 || >= 1.4.16"
       }
     },
+    "node_modules/detect-browser": {
+      "version": "5.3.0",
+      "resolved": "https://registry.npmjs.org/detect-browser/-/detect-browser-5.3.0.tgz",
+      "integrity": "sha512-53rsFbGdwMwlF7qvCt0ypLM5V5/Mbl0szB7GPN8y9NCcbknYOeVVXdrXEq+90IwAfrrzt6Hd+u2E2ntakICU8w=="
+    },
     "node_modules/detect-node": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/detect-node/-/detect-node-2.1.0.tgz",
diff --git a/nav-app/package.json b/nav-app/package.json
index 2bdafba3..caa2b160 100644
--- a/nav-app/package.json
+++ b/nav-app/package.json
@@ -34,6 +34,7 @@
     "core-js": "^3.31.1",
     "d3": "^7.8.5",
     "d3-svg-legend": "^2.25.6",
+    "detect-browser": "^5.3.0",
     "file-saver": "^2.0.5",
     "load-json-file": "^7.0.1",
     "mathjs": "^12.4.2",
diff --git a/nav-app/src/app/utils/utils.ts b/nav-app/src/app/utils/utils.ts
index 76d8bfbd..3fb73bd1 100644
--- a/nav-app/src/app/utils/utils.ts
+++ b/nav-app/src/app/utils/utils.ts
@@ -1,4 +1,6 @@
 // utils.ts
+import { detect } from "detect-browser";
+
 let comparatorFn = {
 	'<': function(a, b) { return a < b; },
 	'<=': function(a, b) { return a <= b; },
@@ -15,9 +17,8 @@ export function isNumber(value: any): boolean {
 }
 
 export function isIE(): boolean {
-	let userAgent = (window.navigator && window.navigator.userAgent || '').toLowerCase();
-	let match = userAgent.match(/(?:msie |trident.+?; rv:)(\d+)/);
-	return match !== null;
+	const browser = detect();
+	return browser.name == 'ie';
 }
 
 export function isSafari(compRange): boolean {
@@ -28,7 +29,6 @@ export function isSafari(compRange): boolean {
 		return comparatorFn[op] ? comparatorFn[op](version, n) : (version == n || n !== n);
 	}
 
-	let userAgent = (window.navigator && window.navigator.userAgent || '').toLowerCase();
-	var match = userAgent.match(/version\/(\d+).+?safari/);
-	return match !== null && compare(match[1], compRange);
+	const browser = detect();
+	return browser.name == 'safari' && compare(browser.version.split('.')[0], compRange);
 }