diff --git a/src/components/EditorHeader/ControlPanel.jsx b/src/components/EditorHeader/ControlPanel.jsx
index 5463a05..81a685b 100644
--- a/src/components/EditorHeader/ControlPanel.jsx
+++ b/src/components/EditorHeader/ControlPanel.jsx
@@ -615,6 +615,9 @@ export default function ControlPanel({
     }
   };
   const del = () => {
+    if (layout.readonly) {
+      return;
+    }
     switch (selectedElement.element) {
       case ObjectType.TABLE:
         deleteTable(selectedElement.id);
@@ -630,6 +633,9 @@ export default function ControlPanel({
     }
   };
   const duplicate = () => {
+    if (layout.readonly) {
+      return;
+    }
     switch (selectedElement.element) {
       case ObjectType.TABLE: {
         const copiedTable = tables.find((t) => t.id === selectedElement.id);
@@ -685,6 +691,9 @@ export default function ControlPanel({
     }
   };
   const paste = () => {
+    if (layout.readonly) {
+      return;
+    }
     navigator.clipboard.readText().then((text) => {
       let obj = null;
       try {
@@ -718,6 +727,9 @@ export default function ControlPanel({
     });
   };
   const cut = () => {
+    if (layout.readonly) {
+      return;
+    }
     copy();
     del();
   };
@@ -747,10 +759,12 @@ export default function ControlPanel({
       save: {
         function: save,
         shortcut: "Ctrl+S",
+        disabled: layout.readOnly,
       },
       save_as: {
         function: saveDiagramAs,
         shortcut: "Ctrl+Shift+S",
+        disabled: layout.readOnly,
       },
       save_as_template: {
         function: () => {
@@ -775,6 +789,7 @@ export default function ControlPanel({
         function: () => {
           setModal(MODAL.RENAME);
         },
+        disabled: layout.readOnly,
       },
       delete_diagram: {
         warning: {
@@ -805,6 +820,7 @@ export default function ControlPanel({
           {
             function: fileImport,
             name: "JSON",
+            disabled: layout.readOnly,
           },
           {
             function: () => {
@@ -812,6 +828,7 @@ export default function ControlPanel({
               setImportFrom(IMPORT_FROM.DBML);
             },
             name: "DBML",
+            disabled: layout.readOnly,
           },
         ],
       },
@@ -824,6 +841,7 @@ export default function ControlPanel({
                 setImportDb(DB.MYSQL);
               },
               name: "MySQL",
+              disabled: layout.readOnly,
             },
             {
               function: () => {
@@ -831,6 +849,7 @@ export default function ControlPanel({
                 setImportDb(DB.POSTGRES);
               },
               name: "PostgreSQL",
+              disabled: layout.readOnly,
             },
             {
               function: () => {
@@ -838,6 +857,7 @@ export default function ControlPanel({
                 setImportDb(DB.SQLITE);
               },
               name: "SQLite",
+              disabled: layout.readOnly,
             },
             {
               function: () => {
@@ -845,6 +865,7 @@ export default function ControlPanel({
                 setImportDb(DB.MARIADB);
               },
               name: "MariaDB",
+              disabled: layout.readOnly,
             },
             {
               function: () => {
@@ -852,6 +873,7 @@ export default function ControlPanel({
                 setImportDb(DB.MSSQL);
               },
               name: "MSSQL",
+              disabled: layout.readOnly,
             },
             {
               function: () => {
@@ -860,6 +882,7 @@ export default function ControlPanel({
               },
               name: "Oracle",
               label: "Beta",
+              disabled: layout.readOnly,
             },
           ],
         }),
@@ -868,6 +891,7 @@ export default function ControlPanel({
 
           setModal(MODAL.IMPORT_SRC);
         },
+        disabled: layout.readOnly,
       },
       export_source: {
         ...(database === DB.GENERIC && {
@@ -1159,10 +1183,12 @@ export default function ControlPanel({
       undo: {
         function: undo,
         shortcut: "Ctrl+Z",
+        disabled: layout.readOnly || undoStack.length === 0,
       },
       redo: {
         function: redo,
         shortcut: "Ctrl+Y",
+        disabled: layout.readOnly || redoStack.length === 0,
       },
       clear: {
         warning: {
@@ -1194,14 +1220,17 @@ export default function ControlPanel({
               );
             });
         },
+        disabled: layout.readOnly,
       },
       edit: {
         function: edit,
         shortcut: "Ctrl+E",
+        disabled: layout.readOnly,
       },
       cut: {
         function: cut,
         shortcut: "Ctrl+X",
+        disabled: layout.readOnly,
       },
       copy: {
         function: copy,
@@ -1210,14 +1239,17 @@ export default function ControlPanel({
       paste: {
         function: paste,
         shortcut: "Ctrl+V",
+        disabled: layout.readOnly,
       },
       duplicate: {
         function: duplicate,
         shortcut: "Ctrl+D",
+        disabled: layout.readOnly,
       },
       delete: {
         function: del,
         shortcut: "Del",
+        disabled: layout.readOnly,
       },
       copy_as_image: {
         function: copyAsImage,
@@ -1762,7 +1794,7 @@ export default function ControlPanel({
                   // https://stackoverflow.com/a/70976017/1137077
                   e.target.releasePointerCapture(e.pointerId);
                 }}
-                onClick={() => setModal(MODAL.RENAME)}
+                onClick={!layout.readOnly && (() => setModal(MODAL.RENAME))}
               >
                 <span>
                   {(window.name.split(" ")[0] === "t"
@@ -1775,7 +1807,7 @@ export default function ControlPanel({
                   </Tag>
                 )}
               </div>
-              {(showEditName || modal === MODAL.RENAME) && <IconEdit />}
+              {(showEditName || modal === MODAL.RENAME) && !layout.readOnly && <IconEdit />}
             </div>
             <div className="flex items-center">
               <div className="flex justify-start text-md select-none me-2">
@@ -1804,6 +1836,7 @@ export default function ControlPanel({
                                           key={i}
                                           onClick={e.function}
                                           className="flex justify-between"
+                                          disabled={e.disabled}
                                         >
                                           <span>{e.name}</span>
                                           {e.label && (
@@ -1857,6 +1890,7 @@ export default function ControlPanel({
                           return (
                             <Dropdown.Item
                               key={index}
+                              disabled={menu[category][item].disabled}
                               onClick={menu[category][item].function}
                               style={
                                 menu[category][item].shortcut && {
diff --git a/src/components/EditorHeader/SideSheet/Versions.jsx b/src/components/EditorHeader/SideSheet/Versions.jsx
index 7ce9cbf..5588776 100644
--- a/src/components/EditorHeader/SideSheet/Versions.jsx
+++ b/src/components/EditorHeader/SideSheet/Versions.jsx
@@ -95,6 +95,10 @@ export default function Versions({ open, title, setTitle }) {
         setVersion(sha);
         setLayout((prev) => ({ ...prev, readOnly: true }));
 
+        if (!version.data.files[VERSION_FILENAME]) {
+          return;
+        }
+
         const content = version.data.files[VERSION_FILENAME].content;
         const parsedDiagram = JSON.parse(content);
 
@@ -112,10 +116,11 @@ export default function Versions({ open, title, setTitle }) {
           setEnums(parsedDiagram.enums);
         }
       } catch (e) {
-        Toast.error("failed_to_load_diagram");
+        Toast.error(t("failed_to_load_diagram"));
       }
     },
     [
+      t,
       gistId,
       setTables,
       setRelationships,
@@ -178,6 +183,11 @@ export default function Versions({ open, title, setTitle }) {
     if (!gistId) return true;
 
     const previousVersion = await get(gistId);
+
+    if (!previousVersion.data.files[VERSION_FILENAME]) {
+      return true;
+    }
+
     const previousDiagram = JSON.parse(
       previousVersion.data.files[VERSION_FILENAME]?.content,
     );
@@ -209,7 +219,6 @@ export default function Versions({ open, title, setTitle }) {
       } else {
         const id = await create(VERSION_FILENAME, diagramToString());
         setGistId(id);
-        console.log("new gist created", id);
       }
 
       delete cacheRef[gistId];
@@ -217,7 +226,7 @@ export default function Versions({ open, title, setTitle }) {
 
       await getRevisions();
     } catch (e) {
-      Toast.error("failed_to_record_version");
+      Toast.error(t("failed_to_record_version"));
     } finally {
       setIsRecording(false);
     }
diff --git a/src/i18n/locales/en.js b/src/i18n/locales/en.js
index 4d4efef..c145cf4 100644
--- a/src/i18n/locales/en.js
+++ b/src/i18n/locales/en.js
@@ -274,7 +274,8 @@ const en = {
     load_more: "Load more",
     clear_cache: "Clear cache",
     cache_cleared: "Cache cleared",
-    failed_to_record_version: "Failed to record version"
+    failed_to_record_version: "Failed to record version",
+    failed_to_load_diagram: "Failed to load diagram",
   },
 };