diff --git a/content/blog/javascript.ca.md b/content/blog/javascript.ca.md
index d24273c..1f4930b 100644
--- a/content/blog/javascript.ca.md
+++ b/content/blog/javascript.ca.md
@@ -1,7 +1,7 @@
 +++
 title = "Sense JavaScript obligatori"
 date = 2023-01-06
-updated = 2023-09-01
+updated = 2023-10-06
 description = "JavaScript només s'utilitza quan HTML i CSS no són suficients."
 
 [taxonomies]
@@ -16,8 +16,8 @@ Aquest tema no requereix JavaScript obligatori. Opcionalment, pot carregar una q
 
 ## Opcions habilitades globalment
 
-- L'**interruptor de mode clar/fosc** es pot habilitar configurant `theme_switcher = true` a la secció `[extra]` del teu `config.toml` (~900 bytes de JavaScript).
-  
+- L'**interruptor de mode clar/fosc** es pot habilitar configurant `theme_switcher = true` a la secció `[extra]` del teu `config.toml` (~1KB de JavaScript).
+
 - **Decodificació de correu electrònic** (~400 bytes). Per protegir contra robots de correu brossa, pots configurar `encode_plaintext_email = true`. Si el teu lloc web està en un repositori públic, considera utilitzar el teu `email` com una cadena codificada en base64[^1].
 
 ## Opcions que es poden sobreescriure de forma jeràrquica
diff --git a/content/blog/javascript.es.md b/content/blog/javascript.es.md
index a65fdef..27e44fd 100644
--- a/content/blog/javascript.es.md
+++ b/content/blog/javascript.es.md
@@ -1,7 +1,7 @@
 +++
 title = "Sin JavaScript obligatorio"
 date = 2023-01-06
-updated = 2023-09-01
+updated = 2023-10-06
 description = "JavaScript solo se utiliza cuando HTML y CSS no son suficientes."
 
 [taxonomies]
@@ -16,8 +16,8 @@ Este tema no requiere JavaScript de manera obligatoria. Opcionalmente, puede car
 
 ## Opciones habilitadas globalmente
 
-- El **interruptor de modo claro/oscuro** puede habilitarse configurando `theme_switcher = true` en la sección `[extra]` de tu `config.toml` (~900 bytes de JavaScript).
-  
+- El **interruptor de modo claro/oscuro** puede habilitarse configurando `theme_switcher = true` en la sección `[extra]` de tu `config.toml` (~1KB de JavaScript).
+
 - **Descodificación de correo electrónico** (~400 bytes). Para proteger contra bots que recopilan correos electrónicos desde tu sitio web, puedes configurar `encode_plaintext_email = true`. Si tu sitio está en un repositorio público, para mayor protección, considera configurar tu `email` como una cadena codificada en base64[^1].
 
 ## Opciones que se pueden sobreescribir de forma jerárquica
diff --git a/content/blog/javascript.md b/content/blog/javascript.md
index f90fdaf..e67cf83 100644
--- a/content/blog/javascript.md
+++ b/content/blog/javascript.md
@@ -1,7 +1,7 @@
 +++
 title = "No mandatory JavaScript"
 date = 2023-01-06
-updated = 2023-09-01
+updated = 2023-10-06
 description = "JavaScript is only used when HTML and CSS aren't enough."
 
 [taxonomies]
@@ -16,7 +16,7 @@ This theme has no mandatory JavaScript. Optionally, it can load a minimal amount
 
 ## Globally enabled settings
 
-- The **light/dark mode switch** can be enabled by setting `theme_switcher = true` in the `[extra]` section of your `config.toml` (~900 bytes of JavaScript).
+- The **light/dark mode switch** can be enabled by setting `theme_switcher = true` in the `[extra]` section of your `config.toml` (~1KB of JavaScript).
 
 - **E-mail decoding** (~400 bytes). To protect against spambots scraping your e-mail from your website, you can set `encode_plaintext_email = true`. If your site is on a public repository, for extra protection, consider setting your `email` as a base64-encoded string[^1] directly.
 
diff --git a/i18n/ca.toml b/i18n/ca.toml
index 6c7a718..07280be 100644
--- a/i18n/ca.toml
+++ b/i18n/ca.toml
@@ -26,6 +26,7 @@ language_selection = "Selecció d'idioma"
 toggle_mode = "Canvia el mode $MODE"  # $MODE will be replaced by a value (or both) below.
 dark = "obscur"
 light = "clar"
+reset_mode = "Restableix el mode als valors predeterminats del sistema"
 
 # Post metadata.
 draft = "ESBORRANY"
diff --git a/i18n/de.toml b/i18n/de.toml
index e28ba98..d6db4f0 100644
--- a/i18n/de.toml
+++ b/i18n/de.toml
@@ -30,6 +30,7 @@ language_selection = "Sprachauswahl"
 toggle_mode = "Wechsle in den $MODE Modus"  # $MODE will be replaced by a value (or both) below.
 dark = "dunkel"
 light = "hell"
+reset_mode = "Modus auf Betriebssystemstandard zurücksetzen"
 
 # Post metadata.
 draft = "ENTWURF"
diff --git a/i18n/en.toml b/i18n/en.toml
index df2bf94..aedd4be 100644
--- a/i18n/en.toml
+++ b/i18n/en.toml
@@ -26,6 +26,7 @@ language_selection = "Language selection"
 toggle_mode = "Toggle $MODE mode"  # $MODE will be replaced by a value (or both) below.
 dark = "dark"
 light = "light"
+reset_mode = "Reset mode to OS default"
 
 # Post metadata.
 draft = "DRAFT"
diff --git a/i18n/es.toml b/i18n/es.toml
index b62ebe6..e5d3128 100644
--- a/i18n/es.toml
+++ b/i18n/es.toml
@@ -26,6 +26,7 @@ language_selection = "Selección de idioma"
 toggle_mode = "Cambiar a modo $MODE"  # $MODE will be replaced by a value (or both) below.
 dark = "oscuro"
 light = "claro"
+reset_mode = "Restablecer modo a configuración predeterminada del SO"
 
 # Post metadata.
 draft = "BORRADOR"
diff --git a/i18n/fr.toml b/i18n/fr.toml
index 4958474..b7fbe2f 100644
--- a/i18n/fr.toml
+++ b/i18n/fr.toml
@@ -30,6 +30,7 @@ language_selection = "Sélection de la langue"
 toggle_mode = "Basculer en mode $MODE"  # $MODE will be replaced by a value (or both) below.
 dark = "sombre"
 light = "clair"
+reset_mode = "Réinitialiser le mode aux paramètres par défaut du système"
 
 # Post metadata.
 draft = "BROUILLON"
diff --git a/i18n/hi.toml b/i18n/hi.toml
index e48961e..7c88135 100644
--- a/i18n/hi.toml
+++ b/i18n/hi.toml
@@ -28,6 +28,7 @@ language_selection = "भाषा चयन"
 toggle_mode = "$MODE मोड में टॉगल करें"  # $MODE will be replaced by a value (or both) below.
 dark = "अंधेरा"
 light = "रोशनी"
+reset_mode = "मोड को ओएस डिफ़ॉल्ट पर रीसेट करें"
 
 # Post metadata.
 draft = "मसौदा"
diff --git a/i18n/it.toml b/i18n/it.toml
index 23a6a2f..20e90ad 100644
--- a/i18n/it.toml
+++ b/i18n/it.toml
@@ -26,6 +26,7 @@ language_selection = "Selezione della lingua"
 toggle_mode = "Passa alla modalità $MODE"  # $MODE will be replaced by a value (or both) below.
 dark = "scuro"
 light = "chiaro"
+reset_mode = "Reimposta la modalità alle impostazioni predefinite del sistema operativo"
 
 # Post metadata.
 draft = "BOZZA"
diff --git a/i18n/ja.toml b/i18n/ja.toml
index 18b102d..d011131 100644
--- a/i18n/ja.toml
+++ b/i18n/ja.toml
@@ -30,6 +30,7 @@ language_selection = "言語選択"
 toggle_mode = "$MODE モードに切り替え"  # $MODE will be replaced by a value (or both) below.
 dark = "暗い"
 light = "明るい"
+reset_mode = "モードをOSデフォルトにリセット"
 
 # Post metadata.
 draft = "ドラフト"
diff --git a/i18n/ko.toml b/i18n/ko.toml
index a28e854..7a05a7a 100644
--- a/i18n/ko.toml
+++ b/i18n/ko.toml
@@ -30,6 +30,7 @@ language_selection = "언어 선택"
 toggle_mode = "$MODE 모드로 전환"  # $MODE will be replaced by a value (or both) below.
 dark = "어두운"
 light = "밝은"
+reset_mode = "모드를 OS 기본값으로 재설정"
 
 # Post metadata.
 draft = "임시 저장"
diff --git a/i18n/pt-PT.toml b/i18n/pt-PT.toml
index 91ea16e..f94d892 100644
--- a/i18n/pt-PT.toml
+++ b/i18n/pt-PT.toml
@@ -26,6 +26,7 @@ language_selection = "Seleção de idioma"
 toggle_mode = "Alternar para o modo $MODE"  # $MODE will be replaced by a value (or both) below.
 dark = "escuro"
 light = "claro"
+reset_mode = "Repor o modo para o padrão do SO"
 
 # Post metadata.
 draft = "RASCUNHO"
diff --git a/i18n/ru.toml b/i18n/ru.toml
index 7d910a1..a806978 100644
--- a/i18n/ru.toml
+++ b/i18n/ru.toml
@@ -26,6 +26,7 @@ language_selection = "Выбор языка"
 toggle_mode = "Переключить на режим $MODE"  # $MODE will be replaced by a value (or both) below.
 dark = "тёмный"
 light = "светлый"
+reset_mode = "Сбросить режим к настройкам ОС по умолчанию"
 
 # Post metadata.
 draft = "ЧЕРНОВИК"
diff --git a/i18n/uk.toml b/i18n/uk.toml
index 927feae..d8a61b7 100644
--- a/i18n/uk.toml
+++ b/i18n/uk.toml
@@ -30,6 +30,7 @@ language_selection = "Вибір мови"
 toggle_mode = "Перемкнути в режим $MODE"  # $MODE will be replaced by a value (or both) below.
 dark = "темний"
 light = "світлий"
+reset_mode = "Скинути режим до типових параметрів ОС"
 
 # Post metadata.
 draft = "ЧЕРНЕТКА"
diff --git a/i18n/zh-Hans.toml b/i18n/zh-Hans.toml
index 7d5afc6..beeb41c 100644
--- a/i18n/zh-Hans.toml
+++ b/i18n/zh-Hans.toml
@@ -24,8 +24,9 @@ all_posts = "所有文章"
 all_tags = "所有标签"
 language_selection = "语言选择"  # Machine translated.
 toggle_mode = "切换到$MODE模式"  # $MODE will be replaced by a value (or both) below. Machine translated.
-dark = "暗"  # Machine translated. 
+dark = "暗"  # Machine translated.
 light = "亮"  # Machine translated.
+reset_mode = "重置为操作系统默认模式"  # Machine translated.
 
 # Post metadata.
 draft = "草稿"
diff --git a/i18n/zh-Hant.toml b/i18n/zh-Hant.toml
index 7ef6b02..c9e38d1 100644
--- a/i18n/zh-Hant.toml
+++ b/i18n/zh-Hant.toml
@@ -26,6 +26,7 @@ language_selection = "語言選擇"  # Machine translated.
 toggle_mode = "切換到$MODE模式"  # $MODE will be replaced by a value (or both) below. Machine translated.
 dark = "暗"  # Machine translated.
 light = "亮"  # Machine translated.
+reset_mode = "重置為操作系統預設模式"  # Machine translated.
 
 # Post metadata.
 draft = "草稿"
diff --git a/sass/parts/_theme-switch.scss b/sass/parts/_theme-switch.scss
index 195df29..6751a78 100644
--- a/sass/parts/_theme-switch.scss
+++ b/sass/parts/_theme-switch.scss
@@ -11,3 +11,32 @@
         background: var(--meta-color);
     }
 }
+
+.theme-switcher-wrapper {
+    position: relative;
+}
+
+.theme-resetter {
+    -webkit-mask: url('data:image/svg+xml,%3Csvg xmlns="http://www.w3.org/2000/svg" viewBox="0 -960 960 960" %3E%3Cpath d="M295.87-193.869v-78.001h291.152q43.63 0 72.369-33.424 28.739-33.423 28.739-79.271t-28.739-79.391Q630.652-497.5 587.022-497.5H343.913l87.478 87.478-55.652 55.153L193.869-536.5l181.87-181.631 55.652 55.653-87.478 86.978h243.109q75.435 0 127.272 56.522 51.837 56.521 51.837 134.174 0 77.652-51.837 134.293-51.837 56.642-127.272 56.642H295.87Z"/%3E%3C/svg%3E');
+    position: absolute;
+    top: -0.6rem;
+    right: -0.6rem;
+    visibility: hidden;
+    opacity: 0;
+    transition: opacity 0.3s ease, visibility 0.3s ease;
+    transition-delay: 0.5s;
+    cursor: pointer;
+    background: var(--text-color);
+    width: 0.8rem;
+    height: 0.8rem;
+}
+
+.theme-switcher-wrapper:hover .theme-resetter.has-custom-theme {
+    visibility: visible;
+    opacity: 1;
+    transition: opacity 0.1s ease, visibility 0.1s ease;
+    transition-delay: 0s;
+    &:hover {
+        background: var(--meta-color);
+    }
+}
diff --git a/static/js/themeSwitcher.js b/static/js/themeSwitcher.js
index 0cff465..d6a0be5 100644
--- a/static/js/themeSwitcher.js
+++ b/static/js/themeSwitcher.js
@@ -1,10 +1,11 @@
-// Get the theme switcher button element.
+// Get the theme switcher button elements.
 const themeSwitcher = document.querySelector(".theme-switcher");
+const themeResetter = document.querySelector(".theme-resetter");
 
 // Retrieve theme from either the localStorage or the data-theme attribute on the document element.
 let currentTheme = localStorage.getItem("theme") || document.documentElement.getAttribute('data-theme');
 
-// Function to set theme
+// Function to set theme.
 function setTheme(theme, saveToLocalStorage = false) {
     document.documentElement.setAttribute("data-theme", theme);
     currentTheme = theme;
@@ -13,6 +14,12 @@ function setTheme(theme, saveToLocalStorage = false) {
 
     if (saveToLocalStorage) {
         localStorage.setItem("theme", theme);
+        themeResetter.classList.add("has-custom-theme");
+        themeResetter.setAttribute("aria-hidden", "false");
+    } else {
+        localStorage.removeItem("theme");
+        themeResetter.classList.remove("has-custom-theme");
+        themeResetter.setAttribute("aria-hidden", "true");
     }
 
     // Dispatch a custom event for comment systems.
@@ -22,6 +29,12 @@ function setTheme(theme, saveToLocalStorage = false) {
     window.dispatchEvent(event);
 }
 
+function resetTheme() {
+    const isSystemDark = window.matchMedia('(prefers-color-scheme: dark)').matches;
+    const defaultTheme = isSystemDark ? "dark" : "light";
+    setTheme(defaultTheme);
+}
+
 // Function to switch between dark and light themes.
 function switchTheme() {
     // Set the new theme based on the current theme.
@@ -31,6 +44,8 @@ function switchTheme() {
 
 // Initialize the theme switcher button.
 themeSwitcher.addEventListener("click", switchTheme, false);
+themeResetter.addEventListener("click", resetTheme, false);
+
 themeSwitcher.setAttribute("role", "button");
 let togglePressed = currentTheme === "dark" ? "true" : "false";
 themeSwitcher.setAttribute("aria-pressed", togglePressed);
@@ -40,3 +55,9 @@ window.matchMedia("(prefers-color-scheme: dark)").addEventListener("change", e =
     const newTheme = e.matches ? "dark" : "light";
     setTheme(newTheme);
 });
+
+if (localStorage.getItem("theme")) {
+    themeResetter.classList.add("has-custom-theme");
+} else {
+    themeResetter.classList.remove("has-custom-theme");
+}
diff --git a/static/js/themeSwitcher.min.js b/static/js/themeSwitcher.min.js
index 63a311e..f925a28 100644
--- a/static/js/themeSwitcher.min.js
+++ b/static/js/themeSwitcher.min.js
@@ -1 +1 @@
-const themeSwitcher=document.querySelector(".theme-switcher");let currentTheme=localStorage.getItem("theme")||document.documentElement.getAttribute("data-theme");function setTheme(e,t=!1){document.documentElement.setAttribute("data-theme",e),currentTheme=e;let r="dark"===e?"true":"false";themeSwitcher.setAttribute("aria-pressed",r),t&&localStorage.setItem("theme",e);const h=new CustomEvent("themeChanged",{detail:{theme:e}});window.dispatchEvent(h)}function switchTheme(){setTheme("dark"===currentTheme?"light":"dark",!0)}themeSwitcher.addEventListener("click",switchTheme,!1),themeSwitcher.setAttribute("role","button");let togglePressed="dark"===currentTheme?"true":"false";themeSwitcher.setAttribute("aria-pressed",togglePressed),window.matchMedia("(prefers-color-scheme: dark)").addEventListener("change",(e=>{setTheme(e.matches?"dark":"light")}));
+const themeSwitcher=document.querySelector(".theme-switcher"),themeResetter=document.querySelector(".theme-resetter");let currentTheme=localStorage.getItem("theme")||document.documentElement.getAttribute("data-theme");function setTheme(e,t=!1){document.documentElement.setAttribute("data-theme",e);var r="dark"===(currentTheme=e)?"true":"false",r=(themeSwitcher.setAttribute("aria-pressed",r),t?(localStorage.setItem("theme",e),themeResetter.classList.add("has-custom-theme"),themeResetter.setAttribute("aria-hidden","false")):(localStorage.removeItem("theme"),themeResetter.classList.remove("has-custom-theme"),themeResetter.setAttribute("aria-hidden","true")),new CustomEvent("themeChanged",{detail:{theme:e}}));window.dispatchEvent(r)}function resetTheme(){setTheme(window.matchMedia("(prefers-color-scheme: dark)").matches?"dark":"light")}function switchTheme(){setTheme("dark"===currentTheme?"light":"dark",!0)}themeSwitcher.addEventListener("click",switchTheme,!1),themeResetter.addEventListener("click",resetTheme,!1),themeSwitcher.setAttribute("role","button");let togglePressed="dark"===currentTheme?"true":"false";themeSwitcher.setAttribute("aria-pressed",togglePressed),window.matchMedia("(prefers-color-scheme: dark)").addEventListener("change",e=>{setTheme(e.matches?"dark":"light")}),localStorage.getItem("theme")?themeResetter.classList.add("has-custom-theme"):themeResetter.classList.remove("has-custom-theme");
diff --git a/templates/partials/theme_switcher.html b/templates/partials/theme_switcher.html
index b87bfff..5e1f0dc 100644
--- a/templates/partials/theme_switcher.html
+++ b/templates/partials/theme_switcher.html
@@ -3,16 +3,27 @@
     {%- set toggle_str = macros_translate::translate(key='toggle_mode', default='Toggle $MODE mode', language_strings=language_strings) -%}
     {%- set dark_str = macros_translate::translate(key='dark', default='dark', language_strings=language_strings) -%}
     {%- set light_str = macros_translate::translate(key='light', default='light', language_strings=language_strings) -%}
-    
+
     {%- set combined_mode_str = dark_str ~ "/" ~ light_str -%}
     {%- set title_label = toggle_str | replace(from="$MODE", to=combined_mode_str) -%}
     {%- set aria_label = toggle_str | replace(from="$MODE", to=dark_str) -%}
-    
-    <div 
+
+    <div
         title="{{ title_label }}"
-        class="theme-switcher" 
-        role="button" 
-        aria-label="{{ aria_label }}" 
+        class="theme-switcher"
+        role="button"
+        aria-label="{{ aria_label }}"
         aria-pressed="false">
     </div>
+
+    {%- set reset_str = macros_translate::translate(key='reset_mode', default='Reset mode to OS default', language_strings=language_strings) -%}
+
+    <div
+        title="{{ reset_str }}"
+        class="theme-resetter"
+        role="button"
+        aria-hidden="true"
+        aria-label="{{ reset_str }}">
+    </div>
+
 </li>