diff --git a/src/controllers/custom/getItemListsController.ts b/src/controllers/custom/getItemListsController.ts
index 8e360ca9..914bd5cc 100644
--- a/src/controllers/custom/getItemListsController.ts
+++ b/src/controllers/custom/getItemListsController.ts
@@ -1,5 +1,5 @@
 import { RequestHandler } from "express";
-import { getEnglishString } from "@/src/services/itemDataService";
+import { getDict, getString } from "@/src/services/itemDataService";
 import {
     ExportArcanes,
     ExportGear,
@@ -16,7 +16,8 @@ interface ListedItem {
     fusionLimit?: number;
 }
 
-const getItemListsController: RequestHandler = (_req, res) => {
+const getItemListsController: RequestHandler = (req, res) => {
+    const lang = getDict(typeof req.query.lang == "string" ? req.query.lang : "en");
     const weapons = [];
     const miscitems = [];
     for (const [uniqueName, item] of Object.entries(ExportWeapons)) {
@@ -24,12 +25,12 @@ const getItemListsController: RequestHandler = (_req, res) => {
             if (item.totalDamage !== 0) {
                 weapons.push({
                     uniqueName,
-                    name: getEnglishString(item.name)
+                    name: getString(item.name, lang)
                 });
             } else if (!item.excludeFromCodex) {
                 miscitems.push({
                     uniqueName: "MiscItems:" + uniqueName,
-                    name: getEnglishString(item.name)
+                    name: getString(item.name, lang)
                 });
             }
         }
@@ -37,13 +38,13 @@ const getItemListsController: RequestHandler = (_req, res) => {
     for (const [uniqueName, item] of Object.entries(ExportResources)) {
         miscitems.push({
             uniqueName: item.productCategory + ":" + uniqueName,
-            name: getEnglishString(item.name)
+            name: getString(item.name, lang)
         });
     }
     for (const [uniqueName, item] of Object.entries(ExportGear)) {
         miscitems.push({
             uniqueName: "Consumables:" + uniqueName,
-            name: getEnglishString(item.name)
+            name: getString(item.name, lang)
         });
     }
 
@@ -52,7 +53,7 @@ const getItemListsController: RequestHandler = (_req, res) => {
     for (const [uniqueName, upgrade] of Object.entries(ExportUpgrades)) {
         mods.push({
             uniqueName,
-            name: getEnglishString(upgrade.name),
+            name: getString(upgrade.name, lang),
             fusionLimit: upgrade.fusionLimit
         });
         if (upgrade.isStarter || upgrade.isFrivolous || upgrade.upgradeEntries) {
@@ -62,7 +63,7 @@ const getItemListsController: RequestHandler = (_req, res) => {
     for (const [uniqueName, arcane] of Object.entries(ExportArcanes)) {
         mods.push({
             uniqueName,
-            name: getEnglishString(arcane.name)
+            name: getString(arcane.name, lang)
         });
         if (arcane.isFrivolous) {
             badItems[uniqueName] = true;
@@ -75,7 +76,7 @@ const getItemListsController: RequestHandler = (_req, res) => {
             .map(([uniqueName, warframe]) => {
                 return {
                     uniqueName,
-                    name: getEnglishString(warframe.name)
+                    name: getString(warframe.name, lang)
                 };
             }),
         weapons,
diff --git a/src/services/itemDataService.ts b/src/services/itemDataService.ts
index 33d7064b..ca9c0b0b 100644
--- a/src/services/itemDataService.ts
+++ b/src/services/itemDataService.ts
@@ -1,7 +1,21 @@
 import { getIndexAfter } from "@/src/helpers/stringHelpers";
 import { logger } from "@/src/utils/logger";
 import {
+    dict_de,
     dict_en,
+    dict_es,
+    dict_fr,
+    dict_it,
+    dict_ja,
+    dict_ko,
+    dict_pl,
+    dict_pt,
+    dict_ru,
+    dict_tc,
+    dict_th,
+    dict_tr,
+    dict_uk,
+    dict_zh,
     ExportRecipes,
     ExportWarframes,
     ExportWeapons,
@@ -70,6 +84,40 @@ export const getSuitByUniqueName = (uniqueName: string): IPowersuit | undefined
     return ExportWarframes[uniqueName];
 };
 
-export const getEnglishString = (key: string): string => {
-    return dict_en[key] ?? key;
+export const getDict = (lang: string): Record<string, string> => {
+    switch (lang) {
+        case "de":
+            return dict_de;
+        case "es":
+            return dict_es;
+        case "fr":
+            return dict_fr;
+        case "it":
+            return dict_it;
+        case "ja":
+            return dict_ja;
+        case "ko":
+            return dict_ko;
+        case "pl":
+            return dict_pl;
+        case "pt":
+            return dict_pt;
+        case "ru":
+            return dict_ru;
+        case "tc":
+            return dict_tc;
+        case "th":
+            return dict_th;
+        case "tr":
+            return dict_tr;
+        case "uk":
+            return dict_uk;
+        case "zh":
+            return dict_zh;
+    }
+    return dict_en;
+};
+
+export const getString = (key: string, dict: Record<string, string>): string => {
+    return dict[key] ?? key;
 };
diff --git a/static/webui/index.html b/static/webui/index.html
index 983880c2..75a7ce0a 100644
--- a/static/webui/index.html
+++ b/static/webui/index.html
@@ -7,18 +7,40 @@
     <link rel="stylesheet" href="/webui/style.css" />
 </head>
 <body>
-    <nav class="navbar sticky-top bg-body-tertiary">
+    <nav class="navbar navbar-expand sticky-top bg-body-tertiary">
         <div class="container">
             <button class="navbar-toggler d-lg-none" type="button" data-bs-toggle="offcanvas" data-bs-target="#sidebar" aria-controls="sidebar" aria-label="Toggle sidebar">
                 <span class="navbar-toggler-icon"></span>
             </button>
             <a class="navbar-brand">OpenWF WebUI</a>
-            <div class="nav-item dropdown">
-                <button class="nav-link dropdown-toggle displayname" data-bs-toggle="dropdown" aria-expanded="false"></button>
-                <ul class="dropdown-menu dropdown-menu-end">
-                    <li><a class="dropdown-item" href="/webui/" onclick="logout();">Logout</a></li>
-                </ul>
-            </div>
+            <ul class="navbar-nav ms-auto mb-2 mb-lg-0">
+                <li class="nav-item dropdown">
+                    <button id="active-lang-name" class="nav-link dropdown-toggle" data-bs-toggle="dropdown" aria-expanded="false"></button>
+                    <ul class="dropdown-menu dropdown-menu-end">
+                        <li><a class="dropdown-item active" href="#" data-lang="en" onclick="event.preventDefault();setLanguage('en');">English</a></li>
+                        <li><a class="dropdown-item" href="#" data-lang="de" onclick="event.preventDefault();setLanguage('de');">Deutsch</a></li>
+                        <li><a class="dropdown-item" href="#" data-lang="es" onclick="event.preventDefault();setLanguage('es');">Español</a></li>
+                        <li><a class="dropdown-item" href="#" data-lang="fr" onclick="event.preventDefault();setLanguage('fr');">Français</a></li>
+                        <li><a class="dropdown-item" href="#" data-lang="it" onclick="event.preventDefault();setLanguage('it');">Italiano</a></li>
+                        <li><a class="dropdown-item" href="#" data-lang="ja" onclick="event.preventDefault();setLanguage('ja');">日本語</a></li>
+                        <li><a class="dropdown-item" href="#" data-lang="ko" onclick="event.preventDefault();setLanguage('ko');">한국어</a></li>
+                        <li><a class="dropdown-item" href="#" data-lang="pl" onclick="event.preventDefault();setLanguage('pl');">Polski</a></li>
+                        <li><a class="dropdown-item" href="#" data-lang="pt" onclick="event.preventDefault();setLanguage('pt');">Português</a></li>
+                        <li><a class="dropdown-item" href="#" data-lang="ru" onclick="event.preventDefault();setLanguage('ru');">Русский</a></li>
+                        <li><a class="dropdown-item" href="#" data-lang="tr" onclick="event.preventDefault();setLanguage('tr');">Türkçe</a></li>
+                        <li><a class="dropdown-item" href="#" data-lang="uk" onclick="event.preventDefault();setLanguage('uk');">Українська</a></li>
+                        <li><a class="dropdown-item" href="#" data-lang="zh" onclick="event.preventDefault();setLanguage('zh');">简体中文</a></li>
+                        <li><a class="dropdown-item" href="#" data-lang="tc" onclick="event.preventDefault();setLanguage('tc');">繁體中文</a></li>
+                        <li><a class="dropdown-item" href="#" data-lang="th" onclick="event.preventDefault();setLanguage('th');">แบบไทย</a></li>
+                    </ul>
+                </li>
+                <li class="nav-item dropdown">
+                    <button class="nav-link dropdown-toggle displayname" data-bs-toggle="dropdown" aria-expanded="false"></button>
+                    <ul class="dropdown-menu dropdown-menu-end">
+                        <li><a class="dropdown-item" href="/webui/" onclick="logout();">Logout</a></li>
+                    </ul>
+                </li>
+            </ul>
         </div>
     </nav>
     <div class="container pt-3 pb-3" id="main-view">
diff --git a/static/webui/script.js b/static/webui/script.js
index 8db1ad38..937a81d3 100644
--- a/static/webui/script.js
+++ b/static/webui/script.js
@@ -84,52 +84,71 @@ single.on("route_load", function (event) {
     }
 });
 
-window.itemListPromise = new Promise(resolve => {
-    const req = $.get("/custom/getItemLists");
-    req.done(data => {
-        window.archonCrystalUpgrades = data.archonCrystalUpgrades;
+function setActiveLanguage(lang) {
+    window.lang = lang;
+    const lang_name = document.querySelector("[data-lang=" + lang + "]").textContent;
+    document.getElementById("active-lang-name").textContent = lang_name;
+    document.querySelector("[data-lang].active").classList.remove("active");
+    document.querySelector("[data-lang=" + lang + "]").classList.add("active");
+}
+setActiveLanguage(localStorage.getItem("lang") ?? "en");
 
-        const itemMap = {
-            // Generics for rivens
-            "/Lotus/Weapons/Tenno/Archwing/Primary/ArchGun": { name: "Archgun" },
-            "/Lotus/Weapons/Tenno/Melee/PlayerMeleeWeapon": { name: "Melee" },
-            "/Lotus/Weapons/Tenno/Pistol/LotusPistol": { name: "Pistol" },
-            "/Lotus/Weapons/Tenno/Rifle/LotusRifle": { name: "Rifle" },
-            "/Lotus/Weapons/Tenno/Shotgun/LotusShotgun": { name: "Shotgun" },
-            // Modular weapons
-            "/Lotus/Weapons/SolarisUnited/Primary/LotusModularPrimaryBeam": { name: "Kitgun" },
-            "/Lotus/Weapons/SolarisUnited/Secondary/LotusModularSecondary": { name: "Kitgun" },
-            "/Lotus/Weapons/SolarisUnited/Secondary/LotusModularSecondaryBeam": { name: "Kitgun" },
-            "/Lotus/Weapons/SolarisUnited/Secondary/LotusModularSecondaryShotgun": { name: "Kitgun" },
-            "/Lotus/Weapons/Ostron/Melee/LotusModularWeapon": { name: "Zaw" },
-            // Missing in data sources
-            "/Lotus/Upgrades/CosmeticEnhancers/Peculiars/CyoteMod": { name: "Traumatic Peculiar" }
-        };
-        for (const [type, items] of Object.entries(data)) {
-            if (type == "archonCrystalUpgrades") {
-                Object.entries(items).forEach(([uniqueName, name]) => {
-                    const option = document.createElement("option");
-                    option.setAttribute("data-key", uniqueName);
-                    option.value = name;
-                    document.getElementById("datalist-" + type).appendChild(option);
-                });
-            } else if (type != "badItems") {
-                items.forEach(item => {
-                    if (item.uniqueName in data.badItems) {
-                        item.name += " (Imposter)";
-                    } else if (item.uniqueName.substr(0, 18) != "/Lotus/Types/Game/") {
+function setLanguage(lang) {
+    setActiveLanguage(lang);
+    localStorage.setItem("lang", lang);
+    fetchItemList();
+    updateInventory();
+}
+
+function fetchItemList() {
+    window.itemListPromise = new Promise(resolve => {
+        const req = $.get("/custom/getItemLists?lang=" + window.lang);
+        req.done(data => {
+            window.archonCrystalUpgrades = data.archonCrystalUpgrades;
+
+            const itemMap = {
+                // Generics for rivens
+                "/Lotus/Weapons/Tenno/Archwing/Primary/ArchGun": { name: "Archgun" },
+                "/Lotus/Weapons/Tenno/Melee/PlayerMeleeWeapon": { name: "Melee" },
+                "/Lotus/Weapons/Tenno/Pistol/LotusPistol": { name: "Pistol" },
+                "/Lotus/Weapons/Tenno/Rifle/LotusRifle": { name: "Rifle" },
+                "/Lotus/Weapons/Tenno/Shotgun/LotusShotgun": { name: "Shotgun" },
+                // Modular weapons
+                "/Lotus/Weapons/SolarisUnited/Primary/LotusModularPrimaryBeam": { name: "Kitgun" },
+                "/Lotus/Weapons/SolarisUnited/Secondary/LotusModularSecondary": { name: "Kitgun" },
+                "/Lotus/Weapons/SolarisUnited/Secondary/LotusModularSecondaryBeam": { name: "Kitgun" },
+                "/Lotus/Weapons/SolarisUnited/Secondary/LotusModularSecondaryShotgun": { name: "Kitgun" },
+                "/Lotus/Weapons/Ostron/Melee/LotusModularWeapon": { name: "Zaw" },
+                // Missing in data sources
+                "/Lotus/Upgrades/CosmeticEnhancers/Peculiars/CyoteMod": { name: "Traumatic Peculiar" }
+            };
+            for (const [type, items] of Object.entries(data)) {
+                if (type == "archonCrystalUpgrades") {
+                    Object.entries(items).forEach(([uniqueName, name]) => {
                         const option = document.createElement("option");
-                        option.setAttribute("data-key", item.uniqueName);
-                        option.value = item.name;
+                        option.setAttribute("data-key", uniqueName);
+                        option.value = name;
                         document.getElementById("datalist-" + type).appendChild(option);
-                    }
-                    itemMap[item.uniqueName] = { ...item, type };
-                });
+                    });
+                } else if (type != "badItems") {
+                    items.forEach(item => {
+                        if (item.uniqueName in data.badItems) {
+                            item.name += " (Imposter)";
+                        } else if (item.uniqueName.substr(0, 18) != "/Lotus/Types/Game/") {
+                            const option = document.createElement("option");
+                            option.setAttribute("data-key", item.uniqueName);
+                            option.value = item.name;
+                            document.getElementById("datalist-" + type).appendChild(option);
+                        }
+                        itemMap[item.uniqueName] = { ...item, type };
+                    });
+                }
             }
-        }
-        resolve(itemMap);
+            resolve(itemMap);
+        });
     });
-});
+}
+fetchItemList();
 
 function updateInventory() {
     const req = $.get("/api/inventory.php?" + window.authz + "&xpBasedLevelCapDisabled=1");