diff --git a/public/locales/de-DE/translation.json b/public/locales/de-DE/translation.json
index e46347a..4694e10 100644
--- a/public/locales/de-DE/translation.json
+++ b/public/locales/de-DE/translation.json
@@ -1,16 +1,29 @@
 {
 	"user.interface": "Benutzeroberfläche",
+	"user.interface.appearance":"Erscheinungsbild",
+	"user.interface.appearance.small":"klein",
+	"user.interface.appearance.medium":"mittel",
+	"user.interface.appearance.large":"groß",
+
+	"user.interface.pagesize.description": "Page size",
+	"user.interface.pagesize.help": "Specifies the pagination size in tables",
+	"user.interface.pagesize.hint": "Page size",
 
 	"lang.en": "Englisch",
 	"lang.de": "Deutsch",
 	"lang.es": "Spanisch",
+	"lang.fr": "Französisch",
+	"lang.ru": "Russisch",
+	"lang.jp": "Japanisch",
+	"lang.it": "Italienisch",
+
 	"lang.help": "Ändert die Sprache",
 	"lang.select": "Select language",
 	"lang.description": "Select the language",
 
-	"theme.description": "Theme",
-	"theme.select":"Theme auswählen",
-	"theme.help": "Das aktuelle Theme",
+	"theme.description": "Thema",
+	"theme.select":"Thema auswählen",
+	"theme.help": "Das aktuelle Thema",
 	"theme.dark":"Dunkel",
 	"theme.light": "Hell",
 	"theme.pastel": "Pastelfarbend",
diff --git a/public/locales/en-GB/translation.json b/public/locales/en-GB/translation.json
index 7e96882..e555805 100644
--- a/public/locales/en-GB/translation.json
+++ b/public/locales/en-GB/translation.json
@@ -1,12 +1,25 @@
 {
 	"user.interface": "User interface",
+	"user.interface.appearance":"Appearance",
+	"user.interface.appearance.small":"small",
+	"user.interface.appearance.medium":"medium",
+	"user.interface.appearance.large":"large",
+
+	"user.interface.pagesize.description": "Page size",
+	"user.interface.pagesize.help": "Specifies the pagination size in tables",
+	"user.interface.pagesize.hint": "Page size",
 
 	"lang.en": "English",
 	"lang.de": "German",
 	"lang.es": "Spanish",
+	"lang.fr": "French",
+	"lang.ru": "Russian",
+	"lang.jp": "Japanese",
+	"lang.it": "Italian",
+
 	"lang.help": "Sets the language for the user interface",
 	"lang.select": "Select language",
-	"lang.select.description": "Select the language",
+	"lang.description": "Select the language",
 
 	"theme.description": "Theme",
 	"theme.select": "Select theme",
@@ -16,6 +29,7 @@
 	"theme.pastel": "pastel",
 	"theme.ocean":"ocean",
 
+	"byte.representation.description":"Select byte representation",
 	"byte.representation.select":"Select byte representation",
 	"byte.representation.help":"Specifies the representation of bytes"
 }
\ No newline at end of file
diff --git a/public/locales/es-ES/translation.json b/public/locales/es-ES/translation.json
index 876ede5..e545b4b 100644
--- a/public/locales/es-ES/translation.json
+++ b/public/locales/es-ES/translation.json
@@ -1,21 +1,35 @@
 {
-	"user.interface": "User interface",
+	"user.interface": "Interfaz de usuario",
+	"user.interface.appearance":"Presentación",
+	"user.interface.appearance.small":"pequeño",
+	"user.interface.appearance.medium":"medio",
+	"user.interface.appearance.large":"gran",
 
-	"lang.en": "Ingles",
-	"lang.de": "German",
-	"lang.es": "Spanish",
-	"lang.help": "Sets the language for the user interface",
-	"lang.select": "Select language",
-	"lang.select.description": "Select the language",
+	"user.interface.pagesize.description": "Page size",
+	"user.interface.pagesize.help": "Specifies the pagination size in tables",
+	"user.interface.pagesize.hint": "Page size",
 
-	"theme.description": "Theme",
+	"lang.en": "Inglés",
+	"lang.de": "Alemán",
+	"lang.es": "Español",
+	"lang.fr": "Francés",
+	"lang.ru": "Russian",
+	"lang.jp": "Japanese",
+	"lang.it": "Italian",
+	
+	"lang.help": "Establece el idioma de la interfaz de usuario",
+	"lang.select": "Seleccionar idioma",
+	"lang.description": "Seleccione el idioma",
+
+	"theme.description": "Tema",
 	"theme.select": "Select theme",
 	"theme.help": "The current active theme",
-	"theme.dark":"dark",
-	"theme.light": "light",
+	"theme.dark":"oscuro",
+	"theme.light": "luz",
 	"theme.pastel": "pastel",
-	"theme.ocean":"ocean",
+	"theme.ocean":"océano",
 
+	"byte.representation.description":"Select byte representation",
 	"byte.representation.select":"Select byte representation",
 	"byte.representation.help":"Specifies the representation of bytes"
 }
\ No newline at end of file
diff --git a/public/locales/fr-FR/translation.json b/public/locales/fr-FR/translation.json
new file mode 100644
index 0000000..af9ff2d
--- /dev/null
+++ b/public/locales/fr-FR/translation.json
@@ -0,0 +1,35 @@
+{
+	"user.interface": "Interface utilisateur",
+	"user.interface.appearance":"Appearance",
+	"user.interface.appearance.small":"small",
+	"user.interface.appearance.medium":"medium",
+	"user.interface.appearance.large":"large",
+
+	"user.interface.pagesize.description": "Page size",
+	"user.interface.pagesize.help": "Specifies the pagination size in tables",
+	"user.interface.pagesize.hint": "Page size",
+
+	"lang.en": "English",
+	"lang.de": "German",
+	"lang.es": "Spanish",
+	"lang.fr": "Français",
+	"lang.ru": "Russian",
+	"lang.jp": "Japanese",
+	"lang.it": "Italian",
+	
+	"lang.help": "Sets the language for the user interface",
+	"lang.select": "Select language",
+	"lang.description": "Select the language",
+
+	"theme.description": "Theme",
+	"theme.select": "Select theme",
+	"theme.help": "The current active theme",
+	"theme.dark":"dark",
+	"theme.light": "light",
+	"theme.pastel": "pastel",
+	"theme.ocean":"ocean",
+
+	"byte.representation.description":"Select byte representation",
+	"byte.representation.select":"Select byte representation",
+	"byte.representation.help":"Specifies the representation of bytes"
+}
\ No newline at end of file
diff --git a/public/locales/it-IT/translation.json b/public/locales/it-IT/translation.json
new file mode 100644
index 0000000..af9ff2d
--- /dev/null
+++ b/public/locales/it-IT/translation.json
@@ -0,0 +1,35 @@
+{
+	"user.interface": "Interface utilisateur",
+	"user.interface.appearance":"Appearance",
+	"user.interface.appearance.small":"small",
+	"user.interface.appearance.medium":"medium",
+	"user.interface.appearance.large":"large",
+
+	"user.interface.pagesize.description": "Page size",
+	"user.interface.pagesize.help": "Specifies the pagination size in tables",
+	"user.interface.pagesize.hint": "Page size",
+
+	"lang.en": "English",
+	"lang.de": "German",
+	"lang.es": "Spanish",
+	"lang.fr": "Français",
+	"lang.ru": "Russian",
+	"lang.jp": "Japanese",
+	"lang.it": "Italian",
+	
+	"lang.help": "Sets the language for the user interface",
+	"lang.select": "Select language",
+	"lang.description": "Select the language",
+
+	"theme.description": "Theme",
+	"theme.select": "Select theme",
+	"theme.help": "The current active theme",
+	"theme.dark":"dark",
+	"theme.light": "light",
+	"theme.pastel": "pastel",
+	"theme.ocean":"ocean",
+
+	"byte.representation.description":"Select byte representation",
+	"byte.representation.select":"Select byte representation",
+	"byte.representation.help":"Specifies the representation of bytes"
+}
\ No newline at end of file
diff --git a/public/locales/jp-JP/translation.json b/public/locales/jp-JP/translation.json
new file mode 100644
index 0000000..af9ff2d
--- /dev/null
+++ b/public/locales/jp-JP/translation.json
@@ -0,0 +1,35 @@
+{
+	"user.interface": "Interface utilisateur",
+	"user.interface.appearance":"Appearance",
+	"user.interface.appearance.small":"small",
+	"user.interface.appearance.medium":"medium",
+	"user.interface.appearance.large":"large",
+
+	"user.interface.pagesize.description": "Page size",
+	"user.interface.pagesize.help": "Specifies the pagination size in tables",
+	"user.interface.pagesize.hint": "Page size",
+
+	"lang.en": "English",
+	"lang.de": "German",
+	"lang.es": "Spanish",
+	"lang.fr": "Français",
+	"lang.ru": "Russian",
+	"lang.jp": "Japanese",
+	"lang.it": "Italian",
+	
+	"lang.help": "Sets the language for the user interface",
+	"lang.select": "Select language",
+	"lang.description": "Select the language",
+
+	"theme.description": "Theme",
+	"theme.select": "Select theme",
+	"theme.help": "The current active theme",
+	"theme.dark":"dark",
+	"theme.light": "light",
+	"theme.pastel": "pastel",
+	"theme.ocean":"ocean",
+
+	"byte.representation.description":"Select byte representation",
+	"byte.representation.select":"Select byte representation",
+	"byte.representation.help":"Specifies the representation of bytes"
+}
\ No newline at end of file
diff --git a/public/locales/ru-RU/translation.json b/public/locales/ru-RU/translation.json
new file mode 100644
index 0000000..af9ff2d
--- /dev/null
+++ b/public/locales/ru-RU/translation.json
@@ -0,0 +1,35 @@
+{
+	"user.interface": "Interface utilisateur",
+	"user.interface.appearance":"Appearance",
+	"user.interface.appearance.small":"small",
+	"user.interface.appearance.medium":"medium",
+	"user.interface.appearance.large":"large",
+
+	"user.interface.pagesize.description": "Page size",
+	"user.interface.pagesize.help": "Specifies the pagination size in tables",
+	"user.interface.pagesize.hint": "Page size",
+
+	"lang.en": "English",
+	"lang.de": "German",
+	"lang.es": "Spanish",
+	"lang.fr": "Français",
+	"lang.ru": "Russian",
+	"lang.jp": "Japanese",
+	"lang.it": "Italian",
+	
+	"lang.help": "Sets the language for the user interface",
+	"lang.select": "Select language",
+	"lang.description": "Select the language",
+
+	"theme.description": "Theme",
+	"theme.select": "Select theme",
+	"theme.help": "The current active theme",
+	"theme.dark":"dark",
+	"theme.light": "light",
+	"theme.pastel": "pastel",
+	"theme.ocean":"ocean",
+
+	"byte.representation.description":"Select byte representation",
+	"byte.representation.select":"Select byte representation",
+	"byte.representation.help":"Specifies the representation of bytes"
+}
\ No newline at end of file
diff --git a/src/contexts/UIPreferencesContext.tsx b/src/contexts/UIPreferencesContext.tsx
index 1613136..5d946b2 100644
--- a/src/contexts/UIPreferencesContext.tsx
+++ b/src/contexts/UIPreferencesContext.tsx
@@ -12,7 +12,7 @@ const DEFAULT_PREFERENCES = { pageSize: PAGE_SIZES[0], bytesStringBase2: false,
 export type Theme = "light" | "dark" | "pastel" | "ocean";
 export type PageSize = 10 | 20 | 30 | 40 | 50 | 100;
 export type FontSize = "fs-6" | "fs-5" | "fs-4";
-export type Language = "en-GB" | "de-DE" | "es-ES";
+export type Language = "en-GB" | "de-DE" | "es-ES" | "fr-FR" | "jp-JP" | "ru-RU" | "it-IT";
 
 export interface UIPreferences {
     get pageSize(): PageSize
diff --git a/src/pages/Preferences.jsx b/src/pages/Preferences.jsx
index a6c8508..1289d14 100644
--- a/src/pages/Preferences.jsx
+++ b/src/pages/Preferences.jsx
@@ -36,20 +36,20 @@ export function Preferences() {
                         </div>
                         <br />
                         <div className='form-group'>
-                            <label className='label-description'>Appearance</label>
+                            <label className='label-description'>{t('user.interface.appearance')}</label>
                             <select className="form-select form-select-sm" title='Select font size' id='fontSizeInput' value={fontSize} onChange={e => setFontSize(e.target.value)}>
-                                <option value="fs-6">small</option>
-                                <option value="fs-5">medium</option>
-                                <option value="fs-4">large</option>
+                                <option value="fs-6">{t('user.interface.appearance.small')}</option>
+                                <option value="fs-5">{t('user.interface.appearance.medium')}</option>
+                                <option value="fs-4">{t('user.interface.appearance.large')}</option>
                             </select>
                             <small hmtlfor="fontSizeInput" id='fontSizeHelp' className='form-text text-muted'>Specifies the appearance of the user interface</small>
                         </div>
                         <br />
                         <div className='form-group'>
-                            <label className='label-description'>Page size</label>
+                            <label className='label-description'>{t('user.interface.pagesize.description')}</label>
                             <input className='form-control form-control-sm' id='pageSizeInput'
-                                type='text' placeholder='Page size' value={pageSize} disabled={true} />
-                            <small hmtlfor="pageSizeInput" id='pageSizeHelp' className='form-text text-muted'>Specifies the pagination size in tables</small>
+                                type='text' placeholder={t('user.interface.pagesize.hint')} value={pageSize} disabled={true} />
+                            <small hmtlfor="pageSizeInput" id='pageSizeHelp' className='form-text text-muted'>{t('user.interface.pagesize.help')}</small>
                         </div>
                     </form >
                 </Accordion.Body>
@@ -63,6 +63,10 @@ export function Preferences() {
                             <option value="en-GB">{t('lang.en')}</option>
                             <option value="de-DE">{t('lang.de')}</option>
                             <option value="es-ES">{t('lang.es')}</option>
+                            <option value="fr-FR">{t('lang.fr')}</option>
+                            <option value="it-IT">{t('lang.it')}</option>
+                            <option value="ru-RU">{t('lang.ru')}</option>
+                            <option value="jp-JP">{t('lang.jp')}</option>
                         </select>
                         <small hmtlfor="languageInput" id='languageInputHelp' className='form-text text-muted'>{t('lang.help')}</small>
                     </div>