diff --git a/UI/Web/src/assets/langs/fr.json b/UI/Web/src/assets/langs/fr.json
index 4d5f957f8..0f1ce6f3f 100644
--- a/UI/Web/src/assets/langs/fr.json
+++ b/UI/Web/src/assets/langs/fr.json
@@ -126,15 +126,15 @@
         "immersive-mode-tooltip": "",
         "reading-direction-book-label": "",
         "reading-direction-book-tooltip": "",
-        "font-family-label": "",
+        "font-family-label": "Famille de polices",
         "font-family-tooltip": "",
         "writing-style-label": "",
-        "writing-style-tooltip": "",
+        "writing-style-tooltip": "Change la direction du texte. Horizontal est de gauche à droite, vertical est de haut en bas.",
         "layout-mode-book-label": "",
         "layout-mode-book-tooltip": "",
         "color-theme-book-label": "",
         "color-theme-book-tooltip": "",
-        "font-size-book-label": "",
+        "font-size-book-label": "Taille de Police",
         "line-height-book-label": "",
         "line-height-book-tooltip": "",
         "margin-book-label": "",