diff --git a/meshchatx/meshchat.py b/meshchatx/meshchat.py
index 01d23ce..86e752b 100644
--- a/meshchatx/meshchat.py
+++ b/meshchatx/meshchat.py
@@ -13110,6 +13110,15 @@ class ReticulumMeshChat:
             self.config.nomad_micron_wasm_enabled.set(
                 self._parse_bool(data["nomad_micron_wasm_enabled"]),
             )
+            if not self.config.nomad_micron_wasm_enabled.get():
+                self.config.nomad_micron_default_engine.set("js")
+
+        if "nomad_micron_default_engine" in data:
+            if self.config.nomad_micron_wasm_enabled.get():
+                raw = str(data["nomad_micron_default_engine"] or "").strip().lower()
+                self.config.nomad_micron_default_engine.set(
+                    "wasm" if raw == "wasm" else "js"
+                )
 
         if "nomad_default_page_path" in data:
             from meshchatx.src.backend.page_node import is_allowed_page_filename
@@ -14592,6 +14601,8 @@ class ReticulumMeshChat:
             "nomad_render_html_enabled": ctx.config.nomad_render_html_enabled.get(),
             "nomad_render_plaintext_enabled": ctx.config.nomad_render_plaintext_enabled.get(),
             "nomad_micron_wasm_enabled": ctx.config.nomad_micron_wasm_enabled.get(),
+            "nomad_micron_default_engine": ctx.config.nomad_micron_default_engine.get()
+            or "js",
             "nomad_default_page_path": ctx.config.nomad_default_page_path.get(),
             "local_message_auto_delete_enabled": ctx.config.local_message_auto_delete_enabled.get(),
             "local_message_auto_delete_value": ctx.config.local_message_auto_delete_value.get(),
diff --git a/meshchatx/src/backend/config_manager.py b/meshchatx/src/backend/config_manager.py
index d1f595c..23b1a77 100644
--- a/meshchatx/src/backend/config_manager.py
+++ b/meshchatx/src/backend/config_manager.py
@@ -463,7 +463,12 @@ class ConfigManager:
         self.nomad_micron_wasm_enabled = self.BoolConfig(
             self,
             "nomad_micron_wasm_enabled",
-            False,
+            True,
+        )
+        self.nomad_micron_default_engine = self.StringConfig(
+            self,
+            "nomad_micron_default_engine",
+            "js",
         )
         self.nomad_default_page_path = self.StringConfig(
             self,
diff --git a/meshchatx/src/frontend/components/archives/ArchivesPage.vue b/meshchatx/src/frontend/components/archives/ArchivesPage.vue
index 043fc36..e8b6904 100644
--- a/meshchatx/src/frontend/components/archives/ArchivesPage.vue
+++ b/meshchatx/src/frontend/components/archives/ArchivesPage.vue
@@ -273,21 +273,25 @@ export default {
             return isMicronWasmBundled() && (GlobalState.config || {}).nomad_micron_wasm_enabled === true;
         },
         nomadMicronWasmActive() {
+            const engineWasm = (GlobalState.config?.nomad_micron_default_engine || "js") === "wasm";
             return (
                 this.nomadMicronWasmFeatureEffective &&
                 this.nomadMicronWasmReady === true &&
-                typeof globalThis.micronConvert === "function"
+                typeof globalThis.micronConvert === "function" &&
+                engineWasm
             );
         },
         nomadRenderOptions() {
             const c = GlobalState.config || {};
             const hash = this.viewingArchive?.destination_hash || null;
+            const engineWasm = (c.nomad_micron_default_engine || "js") === "wasm";
             return {
                 renderMarkdown: c.nomad_render_markdown_enabled !== false,
                 renderHtml: c.nomad_render_html_enabled !== false,
                 renderPlaintext: c.nomad_render_plaintext_enabled !== false,
                 nomadDestinationHash: hash,
-                nomad_micron_wasm_use: this.nomadMicronWasmFeatureEffective && this.nomadMicronWasmReady === true,
+                nomad_micron_wasm_use:
+                    this.nomadMicronWasmFeatureEffective && this.nomadMicronWasmReady === true && engineWasm,
             };
         },
         selectedNode() {
@@ -391,6 +395,16 @@ export default {
             }
         );
 
+        this.$watch(
+            () => GlobalState.config?.nomad_micron_default_engine,
+            () => {
+                const a = this.viewingArchive;
+                if (a) {
+                    this.renderedContent = this.renderFullContent(a);
+                }
+            }
+        );
+
         if (isMicronWasmBundled() && GlobalState.config?.nomad_micron_wasm_enabled === true) {
             preloadNomadMicronWasm().then((ok) => {
                 this.nomadMicronWasmReady = ok === true;
diff --git a/meshchatx/src/frontend/components/nomadnetwork/NomadNetworkPage.vue b/meshchatx/src/frontend/components/nomadnetwork/NomadNetworkPage.vue
index fe816c7..57fecb8 100644
--- a/meshchatx/src/frontend/components/nomadnetwork/NomadNetworkPage.vue
+++ b/meshchatx/src/frontend/components/nomadnetwork/NomadNetworkPage.vue
@@ -163,14 +163,15 @@
                                         <button
                                             class="flex-1 rounded px-2 py-1 text-[10px] font-bold transition-colors"
                                             :class="
-                                                !GlobalState.config.nomad_micron_wasm_enabled
+                                                (GlobalState.config.nomad_micron_default_engine || 'js') === 'js'
                                                     ? 'bg-blue-600 text-white dark:bg-blue-500'
                                                     : 'bg-[var(--mc-surface-hover)] text-[var(--mc-text-secondary)] hover:bg-[var(--mc-border-strong)]'
                                             "
+                                            :disabled="!GlobalState.config.nomad_micron_wasm_enabled"
                                             @click.stop="
-                                                !GlobalState.config.nomad_micron_wasm_enabled
+                                                (GlobalState.config.nomad_micron_default_engine || 'js') === 'js'
                                                     ? null
-                                                    : toggleMicronWasm()
+                                                    : applyNomadMicronDefaultEngine('js')
                                             "
                                         >
                                             JS
@@ -178,12 +179,15 @@
                                         <button
                                             class="flex-1 rounded px-2 py-1 text-[10px] font-bold transition-colors"
                                             :class="
-                                                GlobalState.config.nomad_micron_wasm_enabled
+                                                (GlobalState.config.nomad_micron_default_engine || 'js') === 'wasm'
                                                     ? 'bg-blue-600 text-white dark:bg-blue-500'
                                                     : 'bg-[var(--mc-surface-hover)] text-[var(--mc-text-secondary)] hover:bg-[var(--mc-border-strong)]'
                                             "
+                                            :disabled="!GlobalState.config.nomad_micron_wasm_enabled"
                                             @click.stop="
-                                                GlobalState.config.nomad_micron_wasm_enabled ? null : toggleMicronWasm()
+                                                (GlobalState.config.nomad_micron_default_engine || 'js') === 'wasm'
+                                                    ? null
+                                                    : applyNomadMicronDefaultEngine('wasm')
                                             "
                                         >
                                             WASM
@@ -292,14 +296,14 @@
                             </DropDownMenuItem>
                             <DropDownMenuItem
                                 v-if="showMicronRendererInMobileMenu"
-                                @click="applyNomadMicronWasmEnabled(false)"
+                                @click="applyNomadMicronDefaultEngine('js')"
                             >
                                 <MaterialDesignIcon icon-name="language-javascript" class="size-5" />
                                 <span>{{ $t("nomadnet.renderer_menu_js") }}</span>
                             </DropDownMenuItem>
                             <DropDownMenuItem
                                 v-if="showMicronRendererInMobileMenu"
-                                @click="applyNomadMicronWasmEnabled(true)"
+                                @click="applyNomadMicronDefaultEngine('wasm')"
                             >
                                 <MaterialDesignIcon icon-name="memory" class="size-5" />
                                 <span>{{ $t("nomadnet.renderer_menu_wasm") }}</span>
@@ -677,20 +681,24 @@ export default {
             return "https://git.quad4.io/Go-Libs/micron-parser-go";
         },
         nomadMicronWasmActive() {
+            const engineWasm = (GlobalState.config?.nomad_micron_default_engine || "js") === "wasm";
             return (
                 this.nomadMicronWasmFeatureEffective &&
                 this.nomadMicronWasmReady === true &&
-                typeof globalThis.micronConvert === "function"
+                typeof globalThis.micronConvert === "function" &&
+                engineWasm
             );
         },
         nomadRenderOptions() {
             const c = GlobalState.config || {};
+            const engineWasm = (c.nomad_micron_default_engine || "js") === "wasm";
             return {
                 renderMarkdown: c.nomad_render_markdown_enabled !== false,
                 renderHtml: c.nomad_render_html_enabled !== false,
                 renderPlaintext: c.nomad_render_plaintext_enabled !== false,
                 nomadDestinationHash: this.selectedNode?.destination_hash || null,
-                nomad_micron_wasm_use: this.nomadMicronWasmFeatureEffective && this.nomadMicronWasmReady === true,
+                nomad_micron_wasm_use:
+                    this.nomadMicronWasmFeatureEffective && this.nomadMicronWasmReady === true && engineWasm,
             };
         },
         /**
@@ -726,7 +734,9 @@ export default {
                         micronGoRelease,
                     };
                 }
-                const wasmPreferred = this.nomadMicronWasmFeatureEffective;
+                const wasmPreferred =
+                    this.nomadMicronWasmFeatureEffective &&
+                    (GlobalState.config?.nomad_micron_default_engine || "js") === "wasm";
                 if (wasmPreferred && !this.nomadMicronWasmReady) {
                     return {
                         label: this.$t("nomadnet.renderer_chip_micron_js"),
@@ -903,6 +913,19 @@ export default {
             }
         );
 
+        this.$watch(
+            () => GlobalState.config?.nomad_micron_default_engine,
+            () => {
+                if (this.nodePageContent && this.nodePagePath && this.nodePagePath.toLowerCase().endsWith(".mu")) {
+                    const content = this.nodePageContent;
+                    this.nodePageContent = null;
+                    this.$nextTick(() => {
+                        this.nodePageContent = content;
+                    });
+                }
+            }
+        );
+
         if (isMicronWasmBundled() && GlobalState.config?.nomad_micron_wasm_enabled === true) {
             preloadNomadMicronWasm().then((ok) => {
                 this.nomadMicronWasmReady = ok === true;
@@ -973,23 +996,20 @@ export default {
             }
             return content.startsWith("Failed loading page:");
         },
-        async toggleMicronWasm() {
+        async applyNomadMicronDefaultEngine(engine) {
             if (!isMicronWasmBundled()) {
                 return;
             }
-            await this.applyNomadMicronWasmEnabled(!GlobalState.config.nomad_micron_wasm_enabled);
-        },
-        async applyNomadMicronWasmEnabled(useWasm) {
-            if (!isMicronWasmBundled()) {
+            if (!GlobalState.config?.nomad_micron_wasm_enabled) {
                 return;
             }
-            const newValue = Boolean(useWasm);
-            if (Boolean(GlobalState.config?.nomad_micron_wasm_enabled) === newValue) {
+            const next = engine === "wasm" ? "wasm" : "js";
+            if ((GlobalState.config?.nomad_micron_default_engine || "js") === next) {
                 return;
             }
             try {
-                const next = await patchServerConfig({ nomad_micron_wasm_enabled: newValue }, window.api);
-                mergeGlobalConfig(next);
+                const cfg = await patchServerConfig({ nomad_micron_default_engine: next }, window.api);
+                mergeGlobalConfig(cfg);
                 if (this.nodePageContent && this.nodePagePath && this.nodePagePath.toLowerCase().endsWith(".mu")) {
                     const content = this.nodePageContent;
                     this.nodePageContent = null;
@@ -998,7 +1018,7 @@ export default {
                     });
                 }
             } catch (e) {
-                console.error("Failed to update Micron WASM preference", e);
+                console.error("Failed to update Micron default engine", e);
                 ToastUtils.error(this.$t("nomadnet.renderer_setting_failed"));
             }
         },
diff --git a/meshchatx/src/frontend/components/settings/SettingsPage.vue b/meshchatx/src/frontend/components/settings/SettingsPage.vue
index 4143f62..3b8fa7d 100644
--- a/meshchatx/src/frontend/components/settings/SettingsPage.vue
+++ b/meshchatx/src/frontend/components/settings/SettingsPage.vue
@@ -901,6 +901,29 @@
                                     </span>
                                 </span>
                             </label>
+                            <div
+                                v-if="micronWasmBundledInBuild && config.nomad_micron_wasm_enabled"
+                                class="space-y-2 rounded-lg border border-gray-200 bg-gray-50/80 p-3 dark:border-zinc-700 dark:bg-zinc-900/50"
+                            >
+                                <div class="text-sm font-medium text-gray-900 dark:text-gray-100">
+                                    {{ $t("settings.nomad_micron_default_engine_title") }}
+                                </div>
+                                <p class="text-xs text-gray-600 dark:text-gray-400">
+                                    {{ $t("settings.nomad_micron_default_engine_desc") }}
+                                </p>
+                                <select
+                                    :value="config.nomad_micron_default_engine === 'wasm' ? 'wasm' : 'js'"
+                                    class="input-field max-w-xl"
+                                    @change="onNomadMicronDefaultEngineSelect($event)"
+                                >
+                                    <option value="js">
+                                        {{ $t("settings.nomad_micron_default_engine_option_js") }}
+                                    </option>
+                                    <option value="wasm">
+                                        {{ $t("settings.nomad_micron_default_engine_option_wasm") }}
+                                    </option>
+                                </select>
+                            </div>
                             <div v-if="micronWasmBundledInBuild" class="mt-2">
                                 <button
                                     type="button"
@@ -2619,7 +2642,8 @@ export default {
                 nomad_render_markdown_enabled: true,
                 nomad_render_html_enabled: true,
                 nomad_render_plaintext_enabled: true,
-                nomad_micron_wasm_enabled: false,
+                nomad_micron_wasm_enabled: true,
+                nomad_micron_default_engine: "js",
                 nomad_default_page_path: "/page/index.mu",
                 local_message_auto_delete_enabled: false,
                 local_message_auto_delete_value: 30,
@@ -2773,6 +2797,8 @@ export default {
                     "index.mu",
                     "index.html",
                     "default page",
+                    "settings.nomad_micron_default_engine_title",
+                    "settings.nomad_micron_default_engine_desc",
                 ],
                 crawler: ["Discovery", "Smart Crawler", "crawler", "crawl", "retries", "delay", "concurrent"],
                 csp: [
@@ -3605,6 +3631,23 @@ export default {
                 console.log(e);
             }
         },
+        async onNomadMicronDefaultEngineSelect(ev) {
+            const v = ev.target.value === "wasm" ? "wasm" : "js";
+            const prev = this.config.nomad_micron_default_engine === "wasm" ? "wasm" : "js";
+            if (v === prev) {
+                return;
+            }
+            try {
+                const newConfig = await patchServerConfig({ nomad_micron_default_engine: v }, window.api);
+                this.config = newConfig;
+                normalizeConfigColors(this.config);
+                this.syncLxmfTransferLimitInputs();
+            } catch (e) {
+                ev.target.value = prev;
+                ToastUtils.error(this.$t("common.save_failed"));
+                console.log(e);
+            }
+        },
         onMicronWasmOverrideSaved() {},
         async onNomadDefaultPagePathChange() {
             await this.updateConfig(
diff --git a/meshchatx/src/frontend/js/GlobalState.js b/meshchatx/src/frontend/js/GlobalState.js
index ee562ef..4be3a50 100644
--- a/meshchatx/src/frontend/js/GlobalState.js
+++ b/meshchatx/src/frontend/js/GlobalState.js
@@ -24,7 +24,8 @@ const globalState = reactive({
         nomad_render_markdown_enabled: true,
         nomad_render_html_enabled: true,
         nomad_render_plaintext_enabled: true,
-        nomad_micron_wasm_enabled: false,
+        nomad_micron_wasm_enabled: true,
+        nomad_micron_default_engine: "js",
         nomad_default_page_path: "/page/index.mu",
         ui_transparency: 0,
         ui_glass_enabled: true,
diff --git a/meshchatx/src/frontend/locales/de.json b/meshchatx/src/frontend/locales/de.json
index 97b26c8..9dd29f4 100644
--- a/meshchatx/src/frontend/locales/de.json
+++ b/meshchatx/src/frontend/locales/de.json
@@ -2571,6 +2571,10 @@
         "nomad_micron_wasm_desc_before_link": "Optional WASM renderer (",
         "nomad_micron_wasm_link_label": "micron-parser-go",
         "nomad_micron_wasm_desc_after_link": ") für Nomad Network-Seiten. Wenn ausgeschaltet oder nicht unterstützt, wird die Standardversion verwendet.",
+        "nomad_micron_default_engine_title": "Standard-Micron-Renderer (.mu)",
+        "nomad_micron_default_engine_desc": "JavaScript ist die Voreinstellung. WebAssembly nutzt micron-parser-go, wenn die obige Option aktiv ist und das Modul geladen wurde.",
+        "nomad_micron_default_engine_option_js": "JavaScript (micron-parser)",
+        "nomad_micron_default_engine_option_wasm": "WebAssembly (micron-parser-go)",
         "micron_wasm_update_open_btn": "WASM-Engine aktualisieren…",
         "micron_wasm_update_modal_title": "Micron-WASM-Engine",
         "micron_wasm_update_active_label": "Aktive Überschreibung",
diff --git a/meshchatx/src/frontend/locales/en.json b/meshchatx/src/frontend/locales/en.json
index 261d1d6..7ea0650 100644
--- a/meshchatx/src/frontend/locales/en.json
+++ b/meshchatx/src/frontend/locales/en.json
@@ -1348,7 +1348,11 @@
         "nomad_micron_wasm_title": "Micron (WASM)",
         "nomad_micron_wasm_desc_before_link": "Use a faster engine (",
         "nomad_micron_wasm_link_label": "micron-parser-go",
-        "nomad_micron_wasm_desc_after_link": ") for Nomad Network pages. If turned off or unsupported, it falls back to the standard version.",
+        "nomad_micron_wasm_desc_after_link": "). When on, the WebAssembly build can load and be updated in settings. When off, Micron uses JavaScript only. Pick the default renderer below; you can still switch from the Nomad browser toolbar.",
+        "nomad_micron_default_engine_title": "Default Micron renderer (.mu)",
+        "nomad_micron_default_engine_desc": "JavaScript is the default. WebAssembly uses micron-parser-go when the engine above is enabled and the module has loaded.",
+        "nomad_micron_default_engine_option_js": "JavaScript (micron-parser)",
+        "nomad_micron_default_engine_option_wasm": "WebAssembly (micron-parser-go)",
         "micron_wasm_update_open_btn": "Update WASM engine…",
         "micron_wasm_update_modal_title": "Micron WASM engine",
         "micron_wasm_update_active_label": "Active override",
diff --git a/meshchatx/src/frontend/locales/es.json b/meshchatx/src/frontend/locales/es.json
index 74a6473..0c12a2e 100644
--- a/meshchatx/src/frontend/locales/es.json
+++ b/meshchatx/src/frontend/locales/es.json
@@ -1349,6 +1349,10 @@
         "nomad_micron_wasm_desc_before_link": "Optional WASM renderer (",
         "nomad_micron_wasm_link_label": "micron-parser-go",
         "nomad_micron_wasm_desc_after_link": "): faster when supported; falls back to bundled JS. Off keeps JS only.",
+        "nomad_micron_default_engine_title": "Default Micron renderer (.mu)",
+        "nomad_micron_default_engine_desc": "JavaScript is the default. WebAssembly uses micron-parser-go when the engine above is enabled and the module has loaded.",
+        "nomad_micron_default_engine_option_js": "JavaScript (micron-parser)",
+        "nomad_micron_default_engine_option_wasm": "WebAssembly (micron-parser-go)",
         "micron_wasm_update_open_btn": "Actualizar motor WASM…",
         "micron_wasm_update_modal_title": "Motor Micron WASM",
         "micron_wasm_update_active_label": "Anulación activa",
diff --git a/meshchatx/src/frontend/locales/fr.json b/meshchatx/src/frontend/locales/fr.json
index 5ac7add..cf76406 100644
--- a/meshchatx/src/frontend/locales/fr.json
+++ b/meshchatx/src/frontend/locales/fr.json
@@ -1349,6 +1349,10 @@
         "nomad_micron_wasm_desc_before_link": "Optional WASM renderer (",
         "nomad_micron_wasm_link_label": "micron-parser-go",
         "nomad_micron_wasm_desc_after_link": "): faster when supported; falls back to bundled JS. Off keeps JS only.",
+        "nomad_micron_default_engine_title": "Default Micron renderer (.mu)",
+        "nomad_micron_default_engine_desc": "JavaScript is the default. WebAssembly uses micron-parser-go when the engine above is enabled and the module has loaded.",
+        "nomad_micron_default_engine_option_js": "JavaScript (micron-parser)",
+        "nomad_micron_default_engine_option_wasm": "WebAssembly (micron-parser-go)",
         "micron_wasm_update_open_btn": "Mettre à jour le moteur WASM…",
         "micron_wasm_update_modal_title": "Moteur Micron WASM",
         "micron_wasm_update_active_label": "Remplacement actif",
diff --git a/meshchatx/src/frontend/locales/it.json b/meshchatx/src/frontend/locales/it.json
index 1b2bdfe..de3e904 100644
--- a/meshchatx/src/frontend/locales/it.json
+++ b/meshchatx/src/frontend/locales/it.json
@@ -1401,6 +1401,10 @@
         "nomad_micron_wasm_desc_before_link": "Optional WASM renderer (",
         "nomad_micron_wasm_link_label": "micron-parser-go",
         "nomad_micron_wasm_desc_after_link": ") per le pagine Nomad Network. Se disattivata o non supportata, viene usata la versione standard.",
+        "nomad_micron_default_engine_title": "Motore Micron predefinito (.mu)",
+        "nomad_micron_default_engine_desc": "JavaScript è il predefinito. WebAssembly usa micron-parser-go quando il motore sopra è attivo e il modulo è caricato.",
+        "nomad_micron_default_engine_option_js": "JavaScript (micron-parser)",
+        "nomad_micron_default_engine_option_wasm": "WebAssembly (micron-parser-go)",
         "micron_wasm_update_open_btn": "Aggiorna motore WASM…",
         "micron_wasm_update_modal_title": "Motore Micron WASM",
         "micron_wasm_update_active_label": "Sostituzione attiva",
diff --git a/meshchatx/src/frontend/locales/nl.json b/meshchatx/src/frontend/locales/nl.json
index c6e70b8..9ce2b7e 100644
--- a/meshchatx/src/frontend/locales/nl.json
+++ b/meshchatx/src/frontend/locales/nl.json
@@ -1349,6 +1349,10 @@
         "nomad_micron_wasm_desc_before_link": "Optional WASM renderer (",
         "nomad_micron_wasm_link_label": "micron-parser-go",
         "nomad_micron_wasm_desc_after_link": ") voor Nomad Network-pagina's. Als dit is uitgeschakeld of niet wordt ondersteund, wordt de standaardversie gebruikt.",
+        "nomad_micron_default_engine_title": "Standaard Micron-renderer (.mu)",
+        "nomad_micron_default_engine_desc": "JavaScript is de standaard. WebAssembly gebruikt micron-parser-go wanneer de engine hierboven aan staat en de module geladen is.",
+        "nomad_micron_default_engine_option_js": "JavaScript (micron-parser)",
+        "nomad_micron_default_engine_option_wasm": "WebAssembly (micron-parser-go)",
         "micron_wasm_update_open_btn": "WASM-engine bijwerken…",
         "micron_wasm_update_modal_title": "Micron WASM-engine",
         "micron_wasm_update_active_label": "Actieve overschrijving",
diff --git a/meshchatx/src/frontend/locales/ru.json b/meshchatx/src/frontend/locales/ru.json
index 4e4c7d0..d1c72b3 100644
--- a/meshchatx/src/frontend/locales/ru.json
+++ b/meshchatx/src/frontend/locales/ru.json
@@ -2571,6 +2571,10 @@
         "nomad_micron_wasm_desc_before_link": "Optional WASM renderer (",
         "nomad_micron_wasm_link_label": "micron-parser-go",
         "nomad_micron_wasm_desc_after_link": ") для страниц Nomad Network. Если выключено или не поддерживается, используется стандартная версия.",
+        "nomad_micron_default_engine_title": "Рендерер Micron по умолчанию (.mu)",
+        "nomad_micron_default_engine_desc": "По умолчанию используется JavaScript. WebAssembly (micron-parser-go) — если включён движок выше и модуль загружен.",
+        "nomad_micron_default_engine_option_js": "JavaScript (micron-parser)",
+        "nomad_micron_default_engine_option_wasm": "WebAssembly (micron-parser-go)",
         "micron_wasm_update_open_btn": "Обновить движок WASM…",
         "micron_wasm_update_modal_title": "Движок Micron WASM",
         "micron_wasm_update_active_label": "Активное переопределение",
diff --git a/meshchatx/src/frontend/locales/zh.json b/meshchatx/src/frontend/locales/zh.json
index 219fb3e..b704e62 100644
--- a/meshchatx/src/frontend/locales/zh.json
+++ b/meshchatx/src/frontend/locales/zh.json
@@ -1349,6 +1349,10 @@
         "nomad_micron_wasm_desc_before_link": "Optional WASM renderer (",
         "nomad_micron_wasm_link_label": "micron-parser-go",
         "nomad_micron_wasm_desc_after_link": "): faster when supported; falls back to bundled JS. Off keeps JS only.",
+        "nomad_micron_default_engine_title": "Default Micron renderer (.mu)",
+        "nomad_micron_default_engine_desc": "JavaScript is the default. WebAssembly uses micron-parser-go when the engine above is enabled and the module has loaded.",
+        "nomad_micron_default_engine_option_js": "JavaScript (micron-parser)",
+        "nomad_micron_default_engine_option_wasm": "WebAssembly (micron-parser-go)",
         "micron_wasm_update_open_btn": "更新 WASM 引擎…",
         "micron_wasm_update_modal_title": "Micron WASM 引擎",
         "micron_wasm_update_active_label": "当前覆盖",
diff --git a/tests/frontend/fixtures/settingsPageTestApi.js b/tests/frontend/fixtures/settingsPageTestApi.js
index bdcab7c..d27f42b 100644
--- a/tests/frontend/fixtures/settingsPageTestApi.js
+++ b/tests/frontend/fixtures/settingsPageTestApi.js
@@ -123,7 +123,8 @@ export function buildFullServerConfig(overrides = {}) {
         nomad_render_markdown_enabled: true,
         nomad_render_html_enabled: true,
         nomad_render_plaintext_enabled: true,
-        nomad_micron_wasm_enabled: false,
+        nomad_micron_wasm_enabled: true,
+        nomad_micron_default_engine: "js",
         nomad_default_page_path: "/page/index.mu",
         gitea_base_url: "https://git.quad4.io",
         ...overrides,