diff --git a/web/default/src/components/config-drawer.tsx b/web/default/src/components/config-drawer.tsx
index 71bc5f1cb3..00cfd1f9b5 100644
--- a/web/default/src/components/config-drawer.tsx
+++ b/web/default/src/components/config-drawer.tsx
@@ -61,6 +61,7 @@ import {
   type ThemePreset,
   type ThemeRadius,
   type ThemeScale,
+  type ThemeTextSize,
 } from '@/lib/theme-customization'
 import { cn } from '@/lib/utils'
 
@@ -122,6 +123,7 @@ export function ConfigDrawer({
           <FontConfig />
           <RadiusConfig />
           <ScaleConfig />
+          <TextSizeConfig />
           <BadgeSizeConfig />
           {showLayoutControls && (
             <>
@@ -436,10 +438,52 @@ function FontConfig() {
           </Item>
         ))}
       </Radio>
+      <FontLicenseNote />
     </div>
   )
 }
 
+/**
+ * One-line licensing attribution for the bundled webfonts. All three faces
+ * ship under the SIL Open Font License 1.1, which permits commercial use;
+ * each name links to its official source and the license text.
+ */
+function FontLicenseNote() {
+  const { t } = useTranslation()
+  const fontSources: { name: string; href: string }[] = [
+    { name: 'Public Sans', href: 'https://github.com/uswds/public-sans' },
+    { name: 'Lora', href: 'https://fonts.google.com/specimen/Lora' },
+    { name: 'JetBrains Mono', href: 'https://www.jetbrains.com/lp/mono/' },
+  ]
+  return (
+    <p className='text-subtle-foreground mt-2 text-xs leading-relaxed'>
+      {fontSources.map((font, index) => (
+        <span key={font.name}>
+          {index > 0 && ' · '}
+          <a
+            href={font.href}
+            target='_blank'
+            rel='noreferrer'
+            className='hover:text-foreground hover:underline'
+          >
+            {font.name}
+          </a>
+        </span>
+      ))}
+      {' — '}
+      <a
+        href='https://openfontlicense.org'
+        target='_blank'
+        rel='noreferrer'
+        className='hover:text-foreground hover:underline'
+      >
+        SIL OFL 1.1
+      </a>
+      {`, ${t('free for commercial use')}`}
+    </p>
+  )
+}
+
 const RADIUS_OPTIONS: {
   value: ThemeRadius
   label: string
@@ -593,6 +637,75 @@ function ScaleConfig() {
   )
 }
 
+function TextSizeConfig() {
+  const { t } = useTranslation()
+  const { defaults, customization, setTextSize } = useThemeCustomization()
+  // Preview font sizes mirror each tier's `--text-base` so the tiles show
+  // the actual relative difference between tiers.
+  const textSizeOptions: {
+    value: ThemeTextSize
+    label: string
+    previewSize: string
+  }[] = [
+    { value: 'sm', label: t('Small'), previewSize: '0.88rem' },
+    { value: 'default', label: t('Default'), previewSize: '1rem' },
+    { value: 'lg', label: t('Large'), previewSize: '1.075rem' },
+    { value: 'xl', label: t('Extra Large'), previewSize: '1.125rem' },
+    { value: '2xl', label: t('Super Large'), previewSize: '1.21rem' },
+  ]
+  return (
+    <div>
+      <SectionTitle
+        title={t('Text size')}
+        showReset={customization.textSize !== defaults.textSize}
+        onReset={() => setTextSize(defaults.textSize)}
+      />
+      <Radio
+        value={customization.textSize}
+        onValueChange={(v) => setTextSize(v as ThemeTextSize)}
+        className='grid w-full grid-cols-5 gap-2'
+        aria-label={t('Select text size')}
+      >
+        {textSizeOptions.map((option) => (
+          <Item
+            key={option.value}
+            value={option.value}
+            className='group flex flex-col items-stretch outline-none'
+            aria-label={option.label}
+          >
+            <div
+              className={cn(
+                'ring-border relative h-12 rounded-md ring-[1px] transition',
+                'group-data-checked:ring-primary group-data-checked:shadow-md',
+                'group-focus-visible:ring-2',
+                'group-hover:ring-primary/60'
+              )}
+            >
+              <CircleCheck
+                className={cn(
+                  'fill-primary absolute top-0 right-0 z-10 size-5 translate-x-1/2 -translate-y-1/2 stroke-white',
+                  'group-data-unchecked:hidden'
+                )}
+                aria-hidden='true'
+              />
+              <span
+                aria-hidden='true'
+                className='text-foreground absolute inset-0 flex items-center justify-center leading-none font-medium'
+                style={{ fontSize: option.previewSize }}
+              >
+                Aa
+              </span>
+            </div>
+            <div className='mt-1.5 truncate text-center text-xs'>
+              {option.label}
+            </div>
+          </Item>
+        ))}
+      </Radio>
+    </div>
+  )
+}
+
 /**
  * Mock pill rendered inside the badge-size preview tiles. Each option shows
  * the pill at the proportions that size will actually produce.
diff --git a/web/default/src/context/theme-customization-provider.tsx b/web/default/src/context/theme-customization-provider.tsx
index 167ad269e7..b760e31d3f 100644
--- a/web/default/src/context/theme-customization-provider.tsx
+++ b/web/default/src/context/theme-customization-provider.tsx
@@ -37,12 +37,14 @@ import {
   THEME_PRESET_VALUES,
   THEME_RADIUS_VALUES,
   THEME_SCALE_VALUES,
+  THEME_TEXT_SIZE_VALUES,
   type ThemeBadgeSize,
   type ThemeCustomization,
   type ThemeFont,
   type ThemePreset,
   type ThemeRadius,
   type ThemeScale,
+  type ThemeTextSize,
 } from '@/lib/theme-customization'
 
 const COOKIE_MAX_AGE = 60 * 60 * 24 * 365 // 1 year
@@ -74,6 +76,7 @@ type ThemeCustomizationContextType = {
   setFont: (font: ThemeFont) => void
   setRadius: (radius: ThemeRadius) => void
   setScale: (scale: ThemeScale) => void
+  setTextSize: (textSize: ThemeTextSize) => void
   setBadgeSize: (badgeSize: ThemeBadgeSize) => void
   setContentLayout: (contentLayout: ContentLayout) => void
   resetCustomization: () => void
@@ -90,6 +93,7 @@ const FALLBACK_CONTEXT: ThemeCustomizationContextType = {
   setFont: () => {},
   setRadius: () => {},
   setScale: () => {},
+  setTextSize: () => {},
   setBadgeSize: () => {},
   setContentLayout: () => {},
   resetCustomization: () => {},
@@ -129,6 +133,13 @@ export function ThemeCustomizationProvider(props: {
       DEFAULT_THEME_CUSTOMIZATION.scale
     )
   )
+  const [textSize, _setTextSize] = useState<ThemeTextSize>(() =>
+    readCookie<ThemeTextSize>(
+      THEME_COOKIE_KEYS.textSize,
+      THEME_TEXT_SIZE_VALUES,
+      DEFAULT_THEME_CUSTOMIZATION.textSize
+    )
+  )
   const [badgeSize, _setBadgeSize] = useState<ThemeBadgeSize>(() =>
     readCookie<ThemeBadgeSize>(
       THEME_COOKIE_KEYS.badgeSize,
@@ -179,6 +190,13 @@ export function ThemeCustomizationProvider(props: {
     )
   }, [scale])
 
+  useLayoutEffect(() => {
+    applyAttribute(
+      'data-theme-text',
+      textSize === DEFAULT_THEME_CUSTOMIZATION.textSize ? null : textSize
+    )
+  }, [textSize])
+
   // Unlike the other axes, the *site default* for badge size is `lg`, which
   // is a styled value — so the attribute is keyed on the literal unstyled
   // `default` tier rather than DEFAULT_THEME_CUSTOMIZATION (removing the
@@ -230,6 +248,15 @@ export function ThemeCustomizationProvider(props: {
     }
   }, [])
 
+  const setTextSize = useCallback((value: ThemeTextSize) => {
+    _setTextSize(value)
+    if (value === DEFAULT_THEME_CUSTOMIZATION.textSize) {
+      removeCookie(THEME_COOKIE_KEYS.textSize)
+    } else {
+      setCookie(THEME_COOKIE_KEYS.textSize, value, COOKIE_MAX_AGE)
+    }
+  }, [])
+
   const setBadgeSize = useCallback((value: ThemeBadgeSize) => {
     _setBadgeSize(value)
     if (value === DEFAULT_THEME_CUSTOMIZATION.badgeSize) {
@@ -253,18 +280,36 @@ export function ThemeCustomizationProvider(props: {
     setFont(DEFAULT_THEME_CUSTOMIZATION.font)
     setRadius(DEFAULT_THEME_CUSTOMIZATION.radius)
     setScale(DEFAULT_THEME_CUSTOMIZATION.scale)
+    setTextSize(DEFAULT_THEME_CUSTOMIZATION.textSize)
     setBadgeSize(DEFAULT_THEME_CUSTOMIZATION.badgeSize)
     setContentLayout(DEFAULT_THEME_CUSTOMIZATION.contentLayout)
-  }, [setPreset, setFont, setRadius, setScale, setBadgeSize, setContentLayout])
+  }, [
+    setPreset,
+    setFont,
+    setRadius,
+    setScale,
+    setTextSize,
+    setBadgeSize,
+    setContentLayout,
+  ])
 
   const value = useMemo<ThemeCustomizationContextType>(
     () => ({
       defaults: DEFAULT_THEME_CUSTOMIZATION,
-      customization: { preset, font, radius, scale, badgeSize, contentLayout },
+      customization: {
+        preset,
+        font,
+        radius,
+        scale,
+        textSize,
+        badgeSize,
+        contentLayout,
+      },
       setPreset,
       setFont,
       setRadius,
       setScale,
+      setTextSize,
       setBadgeSize,
       setContentLayout,
       resetCustomization,
@@ -274,12 +319,14 @@ export function ThemeCustomizationProvider(props: {
       font,
       radius,
       scale,
+      textSize,
       badgeSize,
       contentLayout,
       setPreset,
       setFont,
       setRadius,
       setScale,
+      setTextSize,
       setBadgeSize,
       setContentLayout,
       resetCustomization,
diff --git a/web/default/src/i18n/locales/en.json b/web/default/src/i18n/locales/en.json
index 18231bbb55..5ba2469325 100644
--- a/web/default/src/i18n/locales/en.json
+++ b/web/default/src/i18n/locales/en.json
@@ -1776,6 +1776,7 @@
     "External operations mode": "External operations mode",
     "External Speed Test": "External Speed Test",
     "Extra": "Extra",
+    "Extra Large": "Extra Large",
     "Extra Notes (Optional)": "Extra Notes (Optional)",
     "Extra visible": "Extra visible",
     "Extra visible to {{group}}": "Extra visible to {{group}}",
@@ -2056,6 +2057,7 @@
     "Forward requests directly to upstream providers without any post-processing.": "Forward requests directly to upstream providers without any post-processing.",
     "Frames per second": "Frames per second",
     "Free": "Free",
+    "free for commercial use": "free for commercial use",
     "Free: {{free}} / Total: {{total}}": "Free: {{free}} / Total: {{total}}",
     "Frequency Penalty": "Frequency Penalty",
     "Friendly name to identify this channel": "Friendly name to identify this channel",
@@ -2417,6 +2419,7 @@
     "Language preference saved": "Language preference saved",
     "Language Preferences": "Language Preferences",
     "Language preferences sync across your signed-in devices and affect API error messages.": "Language preferences sync across your signed-in devices and affect API error messages.",
+    "Large": "Large",
     "Last 24h usage": "Last 24h usage",
     "Last 30 days uptime": "Last 30 days uptime",
     "Last check time": "Last check time",
@@ -4081,6 +4084,7 @@
     "Select sync channels to compare prices": "Select sync channels to compare prices",
     "Select sync channels to compare ratios": "Select sync channels to compare ratios",
     "Select Sync Source": "Select Sync Source",
+    "Select text size": "Select text size",
     "Select the API endpoint region": "Select the API endpoint region",
     "Select the fields you want to overwrite with upstream data. Unselected fields keep their local values.": "Select the fields you want to overwrite with upstream data. Unselected fields keep their local values.",
     "Select theme preference": "Select theme preference",
@@ -4201,6 +4205,7 @@
     "Slug can only contain letters, numbers, hyphens, and underscores": "Slug can only contain letters, numbers, hyphens, and underscores",
     "Slug is required": "Slug is required",
     "Slug must be less than 100 characters": "Slug must be less than 100 characters",
+    "Small": "Small",
     "Smallest USD amount users can recharge (Epay)": "Smallest USD amount users can recharge (Epay)",
     "SMTP Email": "SMTP Email",
     "SMTP encryption": "SMTP encryption",
@@ -4445,6 +4450,7 @@
     "Text Input": "Text Input",
     "Text or array of texts to embed": "Text or array of texts to embed",
     "Text Output": "Text Output",
+    "Text size": "Text size",
     "Text to Video": "Text to Video",
     "Text tokens": "Text tokens",
     "The admin configured three groups and one special ratio rule:": "The admin configured three groups and one special ratio rule:",
diff --git a/web/default/src/i18n/locales/fr.json b/web/default/src/i18n/locales/fr.json
index 02171bf441..bccf27b513 100644
--- a/web/default/src/i18n/locales/fr.json
+++ b/web/default/src/i18n/locales/fr.json
@@ -1776,6 +1776,7 @@
     "External operations mode": "Mode opérations externes",
     "External Speed Test": "Test de vitesse externe",
     "Extra": "Supplémentaire",
+    "Extra Large": "Extra grand",
     "Extra Notes (Optional)": "Notes supplémentaires (facultatif)",
     "Extra visible": "Visible en plus",
     "Extra visible to {{group}}": "Visible en plus pour {{group}}",
@@ -2056,6 +2057,7 @@
     "Forward requests directly to upstream providers without any post-processing.": "Transférer les requêtes directement aux fournisseurs amont sans aucun post-traitement.",
     "Frames per second": "Images par seconde",
     "Free": "Libre",
+    "free for commercial use": "usage commercial autorisé",
     "Free: {{free}} / Total: {{total}}": "Disponible : {{free}} / Total : {{total}}",
     "Frequency Penalty": "Pénalité de fréquence",
     "Friendly name to identify this channel": "Nom convivial pour identifier ce canal",
@@ -2417,6 +2419,7 @@
     "Language preference saved": "Préférence de langue enregistrée",
     "Language Preferences": "Préférences de langue",
     "Language preferences sync across your signed-in devices and affect API error messages.": "Les préférences de langue se synchronisent sur vos appareils connectés et affectent les messages d'erreur de l'API.",
+    "Large": "Grand",
     "Last 24h usage": "Utilisation 24h",
     "Last 30 days uptime": "Disponibilité 30 derniers jours",
     "Last check time": "Dernière vérification",
@@ -4081,6 +4084,7 @@
     "Select sync channels to compare prices": "Sélectionner les canaux de synchronisation pour comparer les prix",
     "Select sync channels to compare ratios": "Sélectionner les canaux de synchronisation pour comparer les ratios",
     "Select Sync Source": "Sélectionner la source de synchronisation",
+    "Select text size": "Sélectionner la taille du texte",
     "Select the API endpoint region": "Sélectionner la région du point de terminaison API",
     "Select the fields you want to overwrite with upstream data. Unselected fields keep their local values.": "Sélectionnez les champs que vous souhaitez écraser avec les données en amont. Les champs non sélectionnés conservent leurs valeurs locales.",
     "Select theme preference": "Sélectionner la préférence de thème",
@@ -4201,6 +4205,7 @@
     "Slug can only contain letters, numbers, hyphens, and underscores": "Le slug ne peut contenir que des lettres, des chiffres, des tirets et des underscores",
     "Slug is required": "Le slug est requis",
     "Slug must be less than 100 characters": "Le slug doit contenir moins de 100 caractères",
+    "Small": "Petit",
     "Smallest USD amount users can recharge (Epay)": "Montant minimum en USD que les utilisateurs peuvent recharger (Epay)",
     "SMTP Email": "E-mail SMTP",
     "SMTP encryption": "Chiffrement SMTP",
@@ -4445,6 +4450,7 @@
     "Text Input": "Entrée texte",
     "Text or array of texts to embed": "Texte ou tableau de textes à vectoriser",
     "Text Output": "Sortie texte",
+    "Text size": "Taille du texte",
     "Text to Video": "Texte vers vidéo",
     "Text tokens": "Jetons texte",
     "The admin configured three groups and one special ratio rule:": "L’administrateur a configuré trois groupes et une règle de taux spécial :",
diff --git a/web/default/src/i18n/locales/ja.json b/web/default/src/i18n/locales/ja.json
index 6a7f567547..6f7ceac945 100644
--- a/web/default/src/i18n/locales/ja.json
+++ b/web/default/src/i18n/locales/ja.json
@@ -1776,6 +1776,7 @@
     "External operations mode": "外部運用モード",
     "External Speed Test": "外部スピードテスト",
     "Extra": "追加",
+    "Extra Large": "特大",
     "Extra Notes (Optional)": "追加のメモ (オプション)",
     "Extra visible": "追加表示",
     "Extra visible to {{group}}": "{{group}} に追加表示",
@@ -2056,6 +2057,7 @@
     "Forward requests directly to upstream providers without any post-processing.": "ポストプロセスなしで、リクエストをアップストリームプロバイダーに直接転送します。",
     "Frames per second": "フレームレート",
     "Free": "空き",
+    "free for commercial use": "商用利用可",
     "Free: {{free}} / Total: {{total}}": "空き容量: {{free}} / 合計: {{total}}",
     "Frequency Penalty": "頻度ペナルティ",
     "Friendly name to identify this channel": "このチャネルを識別するための表示名",
@@ -2417,6 +2419,7 @@
     "Language preference saved": "言語設定を保存しました",
     "Language Preferences": "言語設定",
     "Language preferences sync across your signed-in devices and affect API error messages.": "言語設定はログイン中のすべてのデバイスで同期され、API のエラーメッセージ言語にも反映されます。",
+    "Large": "大",
     "Last 24h usage": "直近24時間の使用量",
     "Last 30 days uptime": "直近 30 日の稼働率",
     "Last check time": "最終チェック時刻",
@@ -4081,6 +4084,7 @@
     "Select sync channels to compare prices": "価格比較のために同期チャネルを選択してください",
     "Select sync channels to compare ratios": "比率を比較するために同期チャネルを選択",
     "Select Sync Source": "同期元を選択",
+    "Select text size": "文字サイズを選択",
     "Select the API endpoint region": "APIエンドポイントのリージョンを選択",
     "Select the fields you want to overwrite with upstream data. Unselected fields keep their local values.": "アップストリームデータで上書きしたいフィールドを選択してください。選択されていないフィールドはローカル値を保持します。",
     "Select theme preference": "テーマの好みを選択",
@@ -4201,6 +4205,7 @@
     "Slug can only contain letters, numbers, hyphens, and underscores": "スラッグには英数字、ハイフン、アンダースコアのみ使用できます",
     "Slug is required": "スラッグは必須です",
     "Slug must be less than 100 characters": "スラッグは100文字以内にしてください",
+    "Small": "小",
     "Smallest USD amount users can recharge (Epay)": "ユーザーがチャージできる最小USD金額 (Epay)",
     "SMTP Email": "SMTPメール",
     "SMTP encryption": "SMTP 暗号化方式",
@@ -4445,6 +4450,7 @@
     "Text Input": "テキスト入力",
     "Text or array of texts to embed": "ベクトル化するテキストまたは配列",
     "Text Output": "テキスト出力",
+    "Text size": "文字サイズ",
     "Text to Video": "テキストから動画",
     "Text tokens": "テキストトークン",
     "The admin configured three groups and one special ratio rule:": "管理者は3つのグループと1つの特別倍率ルールを設定しました：",
diff --git a/web/default/src/i18n/locales/ru.json b/web/default/src/i18n/locales/ru.json
index 1c7a95aad3..2f15b15f18 100644
--- a/web/default/src/i18n/locales/ru.json
+++ b/web/default/src/i18n/locales/ru.json
@@ -1776,6 +1776,7 @@
     "External operations mode": "Режим внешних операций",
     "External Speed Test": "Внешний тест скорости",
     "Extra": "Дополнительно",
+    "Extra Large": "Очень крупный",
     "Extra Notes (Optional)": "Дополнительные примечания (необязательно)",
     "Extra visible": "Дополнительно видимая",
     "Extra visible to {{group}}": "Дополнительно видима для {{group}}",
@@ -2056,6 +2057,7 @@
     "Forward requests directly to upstream providers without any post-processing.": "Перенаправлять запросы напрямую upstream-провайдерам без какой-либо постобработки.",
     "Frames per second": "Кадров в секунду",
     "Free": "Свободно",
+    "free for commercial use": "коммерческое использование разрешено",
     "Free: {{free}} / Total: {{total}}": "Свободно: {{free}} / Всего: {{total}}",
     "Frequency Penalty": "Штраф за частоту",
     "Friendly name to identify this channel": "Дружественное имя для идентификации этого канала",
@@ -2417,6 +2419,7 @@
     "Language preference saved": "Языковая настройка сохранена",
     "Language Preferences": "Языковые настройки",
     "Language preferences sync across your signed-in devices and affect API error messages.": "Языковые настройки синхронизируются на всех ваших устройствах после входа и влияют на язык сообщений об ошибках API.",
+    "Large": "Крупный",
     "Last 24h usage": "Расход за 24ч",
     "Last 30 days uptime": "Доступность за 30 дней",
     "Last check time": "Время последней проверки",
@@ -4081,6 +4084,7 @@
     "Select sync channels to compare prices": "Выберите каналы синхронизации для сравнения цен",
     "Select sync channels to compare ratios": "Выбрать каналы синхронизации для сравнения соотношений",
     "Select Sync Source": "Выбрать источник синхронизации",
+    "Select text size": "Выберите размер текста",
     "Select the API endpoint region": "Выбрать регион конечной точки API",
     "Select the fields you want to overwrite with upstream data. Unselected fields keep their local values.": "Выберите поля, которые вы хотите перезаписать данными из вышестоящего источника. Невыбранные поля сохранят свои локальные значения.",
     "Select theme preference": "Выбрать предпочтение темы",
@@ -4201,6 +4205,7 @@
     "Slug can only contain letters, numbers, hyphens, and underscores": "Slug может содержать только буквы, цифры, дефисы и подчёркивания",
     "Slug is required": "Slug обязателен",
     "Slug must be less than 100 characters": "Slug должен содержать менее 100 символов",
+    "Small": "Мелкий",
     "Smallest USD amount users can recharge (Epay)": "Минимальная сумма в USD, которую пользователи могут пополнить (Epay)",
     "SMTP Email": "Электронная почта SMTP",
     "SMTP encryption": "Шифрование SMTP",
@@ -4445,6 +4450,7 @@
     "Text Input": "Текстовый вход",
     "Text or array of texts to embed": "Текст или массив текстов для векторизации",
     "Text Output": "Текстовый выход",
+    "Text size": "Размер текста",
     "Text to Video": "Текст в видео",
     "Text tokens": "Текстовые токены",
     "The admin configured three groups and one special ratio rule:": "Администратор настроил три группы и одно правило особого коэффициента:",
diff --git a/web/default/src/i18n/locales/vi.json b/web/default/src/i18n/locales/vi.json
index 4e9aa6d21a..48376377f0 100644
--- a/web/default/src/i18n/locales/vi.json
+++ b/web/default/src/i18n/locales/vi.json
@@ -1776,6 +1776,7 @@
     "External operations mode": "Chế độ vận hành bên ngoài",
     "External Speed Test": "Kiểm tra tốc độ bên ngoài",
     "Extra": "Thêm",
+    "Extra Large": "Cực lớn",
     "Extra Notes (Optional)": "Ghi chú bổ sung (Tùy chọn)",
     "Extra visible": "Hiển thị thêm",
     "Extra visible to {{group}}": "Hiển thị thêm cho {{group}}",
@@ -2056,6 +2057,7 @@
     "Forward requests directly to upstream providers without any post-processing.": "Chuyển tiếp các yêu cầu trực tiếp đến các nhà cung cấp ngược dòng mà không cần xử lý hậu kỳ nào.",
     "Frames per second": "Khung hình / giây",
     "Free": "Trống",
+    "free for commercial use": "được phép dùng thương mại",
     "Free: {{free}} / Total: {{total}}": "Còn trống: {{free}} / Tổng: {{total}}",
     "Frequency Penalty": "Phạt tần suất",
     "Friendly name to identify this channel": "Tên thân thiện để nhận dạng kênh này",
@@ -2417,6 +2419,7 @@
     "Language preference saved": "Đã lưu tùy chọn ngôn ngữ",
     "Language Preferences": "Tùy chọn ngôn ngữ",
     "Language preferences sync across your signed-in devices and affect API error messages.": "Tùy chọn ngôn ngữ sẽ đồng bộ trên các thiết bị đã đăng nhập và ảnh hưởng đến ngôn ngữ thông báo lỗi API.",
+    "Large": "Lớn",
     "Last 24h usage": "Sử dụng 24h qua",
     "Last 30 days uptime": "Uptime 30 ngày qua",
     "Last check time": "Thời gian kiểm tra gần nhất",
@@ -4081,6 +4084,7 @@
     "Select sync channels to compare prices": "Chọn kênh đồng bộ để so sánh giá",
     "Select sync channels to compare ratios": "Chọn kênh đồng bộ để so sánh tỷ lệ",
     "Select Sync Source": "Chọn Nguồn Đồng Bộ",
+    "Select text size": "Chọn cỡ chữ",
     "Select the API endpoint region": "Chọn khu vực điểm cuối API",
     "Select the fields you want to overwrite with upstream data. Unselected fields keep their local values.": "Chọn các trường bạn muốn ghi đè bằng dữ liệu thượng nguồn. Các trường không được chọn sẽ giữ nguyên giá trị cục bộ của chúng.",
     "Select theme preference": "Chọn chủ đề ưu tiên",
@@ -4201,6 +4205,7 @@
     "Slug can only contain letters, numbers, hyphens, and underscores": "Slug chỉ có thể chứa chữ cái, số, dấu gạch ngang và dấu gạch dưới",
     "Slug is required": "Slug là bắt buộc",
     "Slug must be less than 100 characters": "Slug phải ít hơn 100 ký tự",
+    "Small": "Nhỏ",
     "Smallest USD amount users can recharge (Epay)": "Số tiền USD tối thiểu người dùng có thể nạp (Epay)",
     "SMTP Email": "Email SMTP",
     "SMTP encryption": "Mã hóa SMTP",
@@ -4445,6 +4450,7 @@
     "Text Input": "Đầu vào văn bản",
     "Text or array of texts to embed": "Văn bản hoặc mảng văn bản cần vector hoá",
     "Text Output": "Đầu ra văn bản",
+    "Text size": "Cỡ chữ",
     "Text to Video": "Văn bản sang video",
     "Text tokens": "Token văn bản",
     "The admin configured three groups and one special ratio rule:": "Quản trị viên đã cấu hình ba nhóm và một quy tắc hệ số đặc biệt:",
diff --git a/web/default/src/i18n/locales/zh-TW.json b/web/default/src/i18n/locales/zh-TW.json
index 0a1c72794c..9b67c3200e 100644
--- a/web/default/src/i18n/locales/zh-TW.json
+++ b/web/default/src/i18n/locales/zh-TW.json
@@ -1776,6 +1776,7 @@
     "External operations mode": "對外運營模式",
     "External Speed Test": "外部速度測試",
     "Extra": "額外",
+    "Extra Large": "特大",
     "Extra Notes (Optional)": "額外備註（可選）",
     "Extra visible": "額外可見",
     "Extra visible to {{group}}": "對 {{group}} 額外可見",
@@ -2056,6 +2057,7 @@
     "Forward requests directly to upstream providers without any post-processing.": "將請求直接轉發給上游供應商，不進行任何後處理。",
     "Frames per second": "幀率",
     "Free": "可用",
+    "free for commercial use": "允許商用",
     "Free: {{free}} / Total: {{total}}": "可用空間: {{free}} / 總空間: {{total}}",
     "Frequency Penalty": "頻率懲罰",
     "Friendly name to identify this channel": "用於識別此渠道的友好名稱",
@@ -2417,6 +2419,7 @@
     "Language preference saved": "語言偏好已儲存",
     "Language Preferences": "語言偏好",
     "Language preferences sync across your signed-in devices and affect API error messages.": "語言偏好會同步到您登入的所有設備，並影響 API 錯誤訊息語言。",
+    "Large": "大",
     "Last 24h usage": "近 24 小時消耗",
     "Last 30 days uptime": "近 30 天可用率",
     "Last check time": "上次檢測時間",
@@ -4081,6 +4084,7 @@
     "Select sync channels to compare prices": "選擇同步渠道以對比價格",
     "Select sync channels to compare ratios": "選擇同步渠道以比較比率",
     "Select Sync Source": "選擇同步源",
+    "Select text size": "選擇文字大小",
     "Select the API endpoint region": "選擇 API 終端節點區域",
     "Select the fields you want to overwrite with upstream data. Unselected fields keep their local values.": "選擇要使用上游數據覆蓋的欄位。未選擇的欄位將保留其本地值。",
     "Select theme preference": "選擇主題偏好",
@@ -4201,6 +4205,7 @@
     "Slug can only contain letters, numbers, hyphens, and underscores": "Slug 只能包含字母、數字、連字符和底線",
     "Slug is required": "Slug 不能為空",
     "Slug must be less than 100 characters": "Slug 不能超過 100 個字元",
+    "Small": "小",
     "Smallest USD amount users can recharge (Epay)": "用戶可以儲值的最小美元金額 (Epay)",
     "SMTP Email": "SMTP 電郵",
     "SMTP encryption": "SMTP 加密方式",
@@ -4445,6 +4450,7 @@
     "Text Input": "文字輸入",
     "Text or array of texts to embed": "需要向量化的文字或文字陣列",
     "Text Output": "文字輸出",
+    "Text size": "文字大小",
     "Text to Video": "文生影片",
     "Text tokens": "文字 Token",
     "The admin configured three groups and one special ratio rule:": "管理員設定了三個分組和一條特殊倍率規則：",
diff --git a/web/default/src/i18n/locales/zh.json b/web/default/src/i18n/locales/zh.json
index f73e536e56..be9a5cb62b 100644
--- a/web/default/src/i18n/locales/zh.json
+++ b/web/default/src/i18n/locales/zh.json
@@ -1776,6 +1776,7 @@
     "External operations mode": "对外运营模式",
     "External Speed Test": "外部速度测试",
     "Extra": "额外",
+    "Extra Large": "特大",
     "Extra Notes (Optional)": "额外备注（可选）",
     "Extra visible": "额外可见",
     "Extra visible to {{group}}": "对 {{group}} 额外可见",
@@ -2056,6 +2057,7 @@
     "Forward requests directly to upstream providers without any post-processing.": "将请求直接转发给上游提供商，不进行任何后处理。",
     "Frames per second": "帧率",
     "Free": "可用",
+    "free for commercial use": "允许商用",
     "Free: {{free}} / Total: {{total}}": "可用空间: {{free}} / 总空间: {{total}}",
     "Frequency Penalty": "频率惩罚",
     "Friendly name to identify this channel": "用于识别此渠道的友好名称",
@@ -2417,6 +2419,7 @@
     "Language preference saved": "语言偏好已保存",
     "Language Preferences": "语言偏好",
     "Language preferences sync across your signed-in devices and affect API error messages.": "语言偏好会同步到您登录的所有设备，并影响 API 错误消息语言。",
+    "Large": "大",
     "Last 24h usage": "近 24 小时消耗",
     "Last 30 days uptime": "近 30 天可用率",
     "Last check time": "上次检测时间",
@@ -4081,6 +4084,7 @@
     "Select sync channels to compare prices": "选择同步渠道以对比价格",
     "Select sync channels to compare ratios": "选择同步渠道以比较比率",
     "Select Sync Source": "选择同步源",
+    "Select text size": "选择文字大小",
     "Select the API endpoint region": "选择 API 终端节点区域",
     "Select the fields you want to overwrite with upstream data. Unselected fields keep their local values.": "选择要使用上游数据覆盖的字段。未选择的字段将保留其本地值。",
     "Select theme preference": "选择主题偏好",
@@ -4201,6 +4205,7 @@
     "Slug can only contain letters, numbers, hyphens, and underscores": "Slug 只能包含字母、数字、连字符和下划线",
     "Slug is required": "Slug 不能为空",
     "Slug must be less than 100 characters": "Slug 不能超过 100 个字符",
+    "Small": "小",
     "Smallest USD amount users can recharge (Epay)": "用户可以充值的最小美元金额 (Epay)",
     "SMTP Email": "SMTP 邮箱",
     "SMTP encryption": "SMTP 加密方式",
@@ -4445,6 +4450,7 @@
     "Text Input": "文字输入",
     "Text or array of texts to embed": "需要向量化的文本或文本数组",
     "Text Output": "文字输出",
+    "Text size": "文字大小",
     "Text to Video": "文生视频",
     "Text tokens": "文本 Token",
     "The admin configured three groups and one special ratio rule:": "管理员配置了三个分组和一条特殊倍率规则：",
diff --git a/web/default/src/lib/theme-customization.ts b/web/default/src/lib/theme-customization.ts
index 9c909fb0c1..a3b6f227de 100644
--- a/web/default/src/lib/theme-customization.ts
+++ b/web/default/src/lib/theme-customization.ts
@@ -83,6 +83,13 @@ export type ThemePreset = (typeof THEME_PRESETS)[number]['value']
 export type ThemeRadius = 'default' | 'none' | 'sm' | 'md' | 'lg' | 'xl'
 export type ThemeScale = 'default' | 'sm' | 'lg' | 'xl'
 
+/**
+ * Text size axis. Overrides only the `--text-*` type ramp, independently of
+ * the density scale (which adjusts spacing and text together). `default`
+ * follows the active preset/density ramp; explicit tiers win over both.
+ */
+export type ThemeTextSize = 'default' | 'sm' | 'lg' | 'xl' | '2xl'
+
 /**
  * Badge size axis. Controls how "chubby" badges/pills (Badge, StatusBadge)
  * read, independently of the global density scale. `default` is the compact
@@ -119,6 +126,7 @@ export type ThemeCustomization = {
   font: ThemeFont
   radius: ThemeRadius
   scale: ThemeScale
+  textSize: ThemeTextSize
   badgeSize: ThemeBadgeSize
   contentLayout: ContentLayout
 }
@@ -128,6 +136,7 @@ export const DEFAULT_THEME_CUSTOMIZATION: ThemeCustomization = {
   font: 'default',
   radius: 'default',
   scale: 'default',
+  textSize: 'default',
   badgeSize: 'lg',
   contentLayout: 'full',
 }
@@ -159,6 +168,14 @@ export const THEME_SCALE_VALUES: ReadonlySet<ThemeScale> = new Set([
   'xl',
 ])
 
+export const THEME_TEXT_SIZE_VALUES: ReadonlySet<ThemeTextSize> = new Set([
+  'default',
+  'sm',
+  'lg',
+  'xl',
+  '2xl',
+])
+
 export const THEME_BADGE_SIZE_VALUES: ReadonlySet<ThemeBadgeSize> = new Set([
   'default',
   'lg',
@@ -175,6 +192,7 @@ export const THEME_COOKIE_KEYS = {
   font: 'theme_font',
   radius: 'theme_radius',
   scale: 'theme_scale',
+  textSize: 'theme_text_size',
   badgeSize: 'theme_badge_size',
   contentLayout: 'theme_content_layout',
 } as const
diff --git a/web/default/src/styles/theme-presets.css b/web/default/src/styles/theme-presets.css
index c44b004a56..5d9d7fd850 100644
--- a/web/default/src/styles/theme-presets.css
+++ b/web/default/src/styles/theme-presets.css
@@ -728,6 +728,50 @@ For commercial licensing, please contact support@quantumnous.com
   --spacing: 0.3rem;
 }
 
+/* ── Text size ────────────────────────────────────────────────────────── */
+/* Dedicated type-ramp axis (`data-theme-text` on <body>). Unlike the density
+ * scale above — which moves text and spacing together — this only overrides
+ * the `--text-*` ramp, so it composes with any density/preset choice. It is
+ * placed AFTER the preset and density blocks on purpose: an explicit text
+ * size wins over the ramps those ship (e.g. simple-large, scale sm/lg/xl).
+ * `default` removes the attribute and defers to the preset/density ramp. */
+[data-theme-text='sm'] {
+  --text-xs: 0.7rem;
+  --text-sm: 0.78rem;
+  --text-base: 0.88rem;
+  --text-lg: 1rem;
+  --text-xl: 1.13rem;
+  --text-2xl: 1.38rem;
+  --text-3xl: 1.7rem;
+}
+[data-theme-text='lg'] {
+  --text-xs: 0.84rem;
+  --text-sm: 0.95rem;
+  --text-base: 1.075rem;
+  --text-lg: 1.2rem;
+  --text-xl: 1.35rem;
+  --text-2xl: 1.65rem;
+  --text-3xl: 2rem;
+}
+[data-theme-text='xl'] {
+  --text-xs: 0.9rem;
+  --text-sm: 1rem;
+  --text-base: 1.125rem;
+  --text-lg: 1.25rem;
+  --text-xl: 1.45rem;
+  --text-2xl: 1.75rem;
+  --text-3xl: 2.15rem;
+}
+[data-theme-text='2xl'] {
+  --text-xs: 0.96rem;
+  --text-sm: 1.08rem;
+  --text-base: 1.21rem;
+  --text-lg: 1.35rem;
+  --text-xl: 1.55rem;
+  --text-2xl: 1.9rem;
+  --text-3xl: 2.3rem;
+}
+
 /* ── Badge size ───────────────────────────────────────────────────────── */
 /* Independent axis for how "chubby" badges/pills read (`data-theme-badge`
  * on <body>, driven by ThemeCustomizationProvider). The redesign moved
@@ -747,7 +791,8 @@ For commercial licensing, please contact support@quantumnous.com
   border-radius: calc(infinity * 1px);
 }
 [data-theme-badge='lg'] [data-slot='badge'],
-[data-theme-badge='lg'] [data-slot='status-badge']:not([data-appearance='plain']) {
+[data-theme-badge='lg']
+  [data-slot='status-badge']:not([data-appearance='plain']) {
   height: calc(var(--spacing) * 6);
   gap: calc(var(--spacing) * 1.5);
   padding-inline: calc(var(--spacing) * 2);
@@ -758,7 +803,8 @@ For commercial licensing, please contact support@quantumnous.com
   border-radius: calc(infinity * 1px);
 }
 [data-theme-badge='xl'] [data-slot='badge'],
-[data-theme-badge='xl'] [data-slot='status-badge']:not([data-appearance='plain']) {
+[data-theme-badge='xl']
+  [data-slot='status-badge']:not([data-appearance='plain']) {
   height: calc(var(--spacing) * 7);
   gap: calc(var(--spacing) * 1.5);
   padding-inline: calc(var(--spacing) * 2.5);