diff --git a/src/pages/tools/string/base64/index.tsx b/src/pages/tools/string/base64/index.tsx
index 61a579d..6176367 100644
--- a/src/pages/tools/string/base64/index.tsx
+++ b/src/pages/tools/string/base64/index.tsx
@@ -8,10 +8,7 @@ import { ToolComponentProps } from '@tools/defineTool';
 import { GetGroupsType } from '@components/options/ToolOptions';
 import { Box } from '@mui/material';
 import SimpleRadio from '@components/options/SimpleRadio';
-
-interface InitialValuesType {
-  mode: 'encode' | 'decode';
-}
+import { InitialValuesType } from './types';
 
 const initialValues: InitialValuesType = {
   mode: 'encode'
diff --git a/src/pages/tools/string/base64/types.ts b/src/pages/tools/string/base64/types.ts
new file mode 100644
index 0000000..c8070f5
--- /dev/null
+++ b/src/pages/tools/string/base64/types.ts
@@ -0,0 +1,3 @@
+export type InitialValuesType = {
+  mode: 'encode' | 'decode';
+};