diff --git a/app/main.js b/app/main.js
index 9c5a3de9..c6a89dce 100644
--- a/app/main.js
+++ b/app/main.js
@@ -1,5 +1,6 @@
 /* global DEFAULTS LIMITS WEB_UI PREFS */
 import 'core-js';
+import 'fast-text-encoding'; // MS Edge support
 import 'intl-pluralrules';
 import choo from 'choo';
 import nanotiming from 'nanotiming';
diff --git a/package-lock.json b/package-lock.json
index 130f4da5..1a6929a3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -18,6 +18,7 @@
         "body-parser": "^1.20.0",
         "choo": "^7.0.0",
         "cldr-core": "^35.1.0",
+        "configstore": "github:dannycoates/configstore#master",
         "convict": "^6.2.3",
         "convict-format-with-validator": "^6.2.0",
         "double-ended-queue": "^2.1.0-0",
@@ -47,6 +48,7 @@
         "crc": "^3.8.0",
         "cross-env": "^6.0.3",
         "css-loader": "^5.2.7",
+        "css-mqpacker": "^7.0.0",
         "cssnano": "^5.1.12",
         "eslint": "^8.21.0",
         "eslint-config-prettier": "^8.5.0",
@@ -54,6 +56,7 @@
         "eslint-plugin-n": "^15.2.4",
         "eslint-plugin-security": "^1.5.0",
         "extract-text-webpack-plugin": "^4.0.0-beta.0",
+        "fast-text-encoding": "^1.0.3",
         "file-loader": "^6.2.0",
         "git-rev-sync": "^3.0.2",
         "http_ece": "^1.1.0",
@@ -4766,6 +4769,18 @@
         "safe-buffer": "~5.1.0"
       }
     },
+    "node_modules/configstore": {
+      "version": "5.0.0",
+      "resolved": "git+ssh://git@github.com/dannycoates/configstore.git#45c19536db34e7005a50b435582692886322ab36",
+      "integrity": "sha512-oVFYKWfl3LOK2Ugy+7/p/9BGaCjLzmOiCQpxh6SHo+RpBH0o2EUm9JqqHfvQu8jO4Au7pjFbJJnecLS+7BwNvQ==",
+      "license": "BSD-2-Clause",
+      "dependencies": {
+        "dot-prop": "^5.1.0"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/connect-history-api-fallback": {
       "version": "1.6.0",
       "resolved": "https://registry.npmjs.org/connect-history-api-fallback/-/connect-history-api-fallback-1.6.0.tgz",
@@ -5429,6 +5444,52 @@
       "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A==",
       "dev": true
     },
+    "node_modules/css-mqpacker": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/css-mqpacker/-/css-mqpacker-7.0.0.tgz",
+      "integrity": "sha512-temVrWS+sB4uocE2quhW8ru/KguDmGhCU7zN213KxtDvWOH3WS/ZUStfpF4fdCT7W8fPpFrQdWRFqtFtPPfBLA==",
+      "deprecated": "Package no longer supported. Contact support@npmjs.com for more info.",
+      "dev": true,
+      "dependencies": {
+        "minimist": "^1.2.0",
+        "postcss": "^7.0.0"
+      },
+      "bin": {
+        "mqpacker": "bin/mqpacker.js"
+      }
+    },
+    "node_modules/css-mqpacker/node_modules/picocolors": {
+      "version": "0.2.1",
+      "resolved": "https://registry.npmjs.org/picocolors/-/picocolors-0.2.1.tgz",
+      "integrity": "sha512-cMlDqaLEqfSaW8Z7N5Jw+lyIW869EzT73/F5lhtY9cLGoVxSXznfgfXMO0Z5K0o0Q2TkTXq+0KFsdnSe3jDViA==",
+      "dev": true
+    },
+    "node_modules/css-mqpacker/node_modules/postcss": {
+      "version": "7.0.39",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-7.0.39.tgz",
+      "integrity": "sha512-yioayjNbHn6z1/Bywyb2Y4s3yvDAeXGOyxqD+LnVOinq6Mdmd++SW2wUNVzavyyHxd6+DxzWGIuosg6P1Rj8uA==",
+      "dev": true,
+      "dependencies": {
+        "picocolors": "^0.2.1",
+        "source-map": "^0.6.1"
+      },
+      "engines": {
+        "node": ">=6.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/postcss/"
+      }
+    },
+    "node_modules/css-mqpacker/node_modules/source-map": {
+      "version": "0.6.1",
+      "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+      "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
+      "dev": true,
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/css-prefers-color-scheme": {
       "version": "6.0.3",
       "resolved": "https://registry.npmjs.org/css-prefers-color-scheme/-/css-prefers-color-scheme-6.0.3.tgz",
@@ -6354,6 +6415,17 @@
         "node": ">=4.0.0"
       }
     },
+    "node_modules/dot-prop": {
+      "version": "5.3.0",
+      "resolved": "https://registry.npmjs.org/dot-prop/-/dot-prop-5.3.0.tgz",
+      "integrity": "sha512-QM8q3zDe58hqUqjraQOmzZ1LIH9SWQJTlEKCH4kJ2oQvLZk7RbQXvtDM2XEq3fwkV9CCvvH4LA0AV+ogFsBM2Q==",
+      "dependencies": {
+        "is-obj": "^2.0.0"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/double-ended-queue": {
       "version": "2.1.0-0",
       "resolved": "https://registry.npmjs.org/double-ended-queue/-/double-ended-queue-2.1.0-0.tgz",
@@ -10406,6 +10478,14 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/is-obj": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/is-obj/-/is-obj-2.0.0.tgz",
+      "integrity": "sha512-drqDG3cbczxxEJRoOXcOjtdp1J/lyp1mNn0xaznRs8+muBhgQcrnbspox5X5fOw0HnMnbfDzvnEMEtqDEJEo8w==",
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/is-object": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/is-object/-/is-object-1.0.2.tgz",
@@ -24800,6 +24880,14 @@
         }
       }
     },
+    "configstore": {
+      "version": "git+ssh://git@github.com/dannycoates/configstore.git#45c19536db34e7005a50b435582692886322ab36",
+      "integrity": "sha512-oVFYKWfl3LOK2Ugy+7/p/9BGaCjLzmOiCQpxh6SHo+RpBH0o2EUm9JqqHfvQu8jO4Au7pjFbJJnecLS+7BwNvQ==",
+      "from": "configstore@github:dannycoates/configstore#master",
+      "requires": {
+        "dot-prop": "^5.1.0"
+      }
+    },
     "connect-history-api-fallback": {
       "version": "1.6.0",
       "resolved": "https://registry.npmjs.org/connect-history-api-fallback/-/connect-history-api-fallback-1.6.0.tgz",
@@ -25296,6 +25384,40 @@
         }
       }
     },
+    "css-mqpacker": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/css-mqpacker/-/css-mqpacker-7.0.0.tgz",
+      "integrity": "sha512-temVrWS+sB4uocE2quhW8ru/KguDmGhCU7zN213KxtDvWOH3WS/ZUStfpF4fdCT7W8fPpFrQdWRFqtFtPPfBLA==",
+      "dev": true,
+      "requires": {
+        "minimist": "^1.2.0",
+        "postcss": "^7.0.0"
+      },
+      "dependencies": {
+        "picocolors": {
+          "version": "0.2.1",
+          "resolved": "https://registry.npmjs.org/picocolors/-/picocolors-0.2.1.tgz",
+          "integrity": "sha512-cMlDqaLEqfSaW8Z7N5Jw+lyIW869EzT73/F5lhtY9cLGoVxSXznfgfXMO0Z5K0o0Q2TkTXq+0KFsdnSe3jDViA==",
+          "dev": true
+        },
+        "postcss": {
+          "version": "7.0.39",
+          "resolved": "https://registry.npmjs.org/postcss/-/postcss-7.0.39.tgz",
+          "integrity": "sha512-yioayjNbHn6z1/Bywyb2Y4s3yvDAeXGOyxqD+LnVOinq6Mdmd++SW2wUNVzavyyHxd6+DxzWGIuosg6P1Rj8uA==",
+          "dev": true,
+          "requires": {
+            "picocolors": "^0.2.1",
+            "source-map": "^0.6.1"
+          }
+        },
+        "source-map": {
+          "version": "0.6.1",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
+          "dev": true
+        }
+      }
+    },
     "css-prefers-color-scheme": {
       "version": "6.0.3",
       "resolved": "https://registry.npmjs.org/css-prefers-color-scheme/-/css-prefers-color-scheme-6.0.3.tgz",
@@ -26019,6 +26141,14 @@
       "resolved": "https://registry.npmjs.org/dont-sniff-mimetype/-/dont-sniff-mimetype-1.1.0.tgz",
       "integrity": "sha512-ZjI4zqTaxveH2/tTlzS1wFp+7ncxNZaIEWYg3lzZRHkKf5zPT/MnEG6WL0BhHMJUabkh8GeU5NL5j+rEUCb7Ug=="
     },
+    "dot-prop": {
+      "version": "5.3.0",
+      "resolved": "https://registry.npmjs.org/dot-prop/-/dot-prop-5.3.0.tgz",
+      "integrity": "sha512-QM8q3zDe58hqUqjraQOmzZ1LIH9SWQJTlEKCH4kJ2oQvLZk7RbQXvtDM2XEq3fwkV9CCvvH4LA0AV+ogFsBM2Q==",
+      "requires": {
+        "is-obj": "^2.0.0"
+      }
+    },
     "double-ended-queue": {
       "version": "2.1.0-0",
       "resolved": "https://registry.npmjs.org/double-ended-queue/-/double-ended-queue-2.1.0-0.tgz",
@@ -29224,6 +29354,11 @@
         "has-tostringtag": "^1.0.0"
       }
     },
+    "is-obj": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/is-obj/-/is-obj-2.0.0.tgz",
+      "integrity": "sha512-drqDG3cbczxxEJRoOXcOjtdp1J/lyp1mNn0xaznRs8+muBhgQcrnbspox5X5fOw0HnMnbfDzvnEMEtqDEJEo8w=="
+    },
     "is-object": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/is-object/-/is-object-1.0.2.tgz",
diff --git a/package.json b/package.json
index 5be22ed2..a1526bef 100644
--- a/package.json
+++ b/package.json
@@ -78,6 +78,7 @@
     "crc": "^3.8.0",
     "cross-env": "^6.0.3",
     "css-loader": "^5.2.7",
+    "css-mqpacker": "^7.0.0",
     "cssnano": "^5.1.12",
     "eslint": "^8.21.0",
     "eslint-config-prettier": "^8.5.0",
@@ -85,6 +86,7 @@
     "eslint-plugin-n": "^15.2.4",
     "eslint-plugin-security": "^1.5.0",
     "extract-text-webpack-plugin": "^4.0.0-beta.0",
+    "fast-text-encoding": "^1.0.3",
     "file-loader": "^6.2.0",
     "git-rev-sync": "^3.0.2",
     "http_ece": "^1.1.0",
diff --git a/test/frontend/index.js b/test/frontend/index.js
index f909d728..3e323ef2 100644
--- a/test/frontend/index.js
+++ b/test/frontend/index.js
@@ -9,7 +9,7 @@ module.exports = function() {
   const files = fs
     .readdirSync(path.join(__dirname, 'tests'))
     .filter(p => /\.js$/.test(p));
-  const code = files.map(kv).join(';\n');
+  const code = "require('fast-text-encoding');\n" + files.map(kv).join(';\n');
   return {
     code,
     dependencies: files.map(f => require.resolve('./tests/' + f)),