diff --git a/src/core/platform/web/function.js b/src/core/platform/web/function.js
index 1c74836e2..152933882 100644
--- a/src/core/platform/web/function.js
+++ b/src/core/platform/web/function.js
@@ -137,5 +137,14 @@ BI._.extend(BI, {
             return version[1] * 1;
         }
         return 0;
+    },
+
+    getMinimumFontSize: function () {
+        const el = document.createElement('div');
+        el.style.fontSize = "0px";
+        document.body.appendChild(el);
+        const size = getComputedStyle(el).fontSize;
+        el.remove();
+        return parseInt(size);
     }
 });