diff --git a/src/pages/string/index.ts b/src/pages/string/index.ts
index bc988ea..ea2d978 100644
--- a/src/pages/string/index.ts
+++ b/src/pages/string/index.ts
@@ -1,3 +1,4 @@
+import { tool as stringRandomizeCase } from './randomize-case/meta';
 import { tool as stringUppercase } from './uppercase/meta';
 import { tool as stringExtractSubstring } from './extract-substring/meta';
 import { tool as stringCreatePalindrome } from './create-palindrome/meta';
diff --git a/src/pages/string/randomize-case/index.tsx b/src/pages/string/randomize-case/index.tsx
new file mode 100644
index 0000000..fbb7733
--- /dev/null
+++ b/src/pages/string/randomize-case/index.tsx
@@ -0,0 +1,11 @@
+import { Box } from '@mui/material';
+import React from 'react';
+import * as Yup from 'yup';
+
+const initialValues = {};
+const validationSchema = Yup.object({
+  // splitSeparator: Yup.string().required('The separator is required')
+});
+export default function RandomizeCase() {
+  return <Box>Lorem ipsum</Box>;
+}
\ No newline at end of file
diff --git a/src/pages/string/randomize-case/meta.ts b/src/pages/string/randomize-case/meta.ts
new file mode 100644
index 0000000..be2da07
--- /dev/null
+++ b/src/pages/string/randomize-case/meta.ts
@@ -0,0 +1,13 @@
+import { defineTool } from '@tools/defineTool';
+import { lazy } from 'react';
+// import image from '@assets/text.png';
+
+export const tool = defineTool('string', {
+  name: 'Randomize case',
+  path: 'randomize-case',
+  // image,
+  description: '',
+  shortDescription: '',
+  keywords: ['randomize', 'case'],
+  component: lazy(() => import('./index'))
+});
\ No newline at end of file
diff --git a/src/pages/string/randomize-case/randomize-case.service.test.ts b/src/pages/string/randomize-case/randomize-case.service.test.ts
new file mode 100644
index 0000000..7e44a7a
--- /dev/null
+++ b/src/pages/string/randomize-case/randomize-case.service.test.ts
@@ -0,0 +1,48 @@
+import { expect, describe, it } from 'vitest';
+import { randomizeCase } from './service';
+
+describe('randomizeCase', () => {
+    it('should randomize the case of each character in the string', () => {
+        const input = 'hello world';
+        const result = randomizeCase(input);
+
+        // Ensure the output length is the same
+        expect(result).toHaveLength(input.length);
+
+        // Ensure each character in the input string appears in the result
+        for (let i = 0; i < input.length; i++) {
+            const inputChar = input[i];
+            const resultChar = result[i];
+
+            if (/[a-zA-Z]/.test(inputChar)) {
+                expect([inputChar.toLowerCase(), inputChar.toUpperCase()]).toContain(resultChar);
+            } else {
+                expect(inputChar).toBe(resultChar);
+            }
+        }
+    });
+
+    it('should handle an empty string', () => {
+        const input = '';
+        const result = randomizeCase(input);
+        expect(result).toBe('');
+    });
+
+    it('should handle a string with numbers and symbols', () => {
+        const input = '123 hello! @world';
+        const result = randomizeCase(input);
+
+        // Ensure the output length is the same
+        expect(result).toHaveLength(input.length);
+
+        // Ensure numbers and symbols remain unchanged
+        for (let i = 0; i < input.length; i++) {
+            const inputChar = input[i];
+            const resultChar = result[i];
+
+            if (!/[a-zA-Z]/.test(inputChar)) {
+                expect(inputChar).toBe(resultChar);
+            }
+        }
+    });
+});
\ No newline at end of file
diff --git a/src/pages/string/randomize-case/service.ts b/src/pages/string/randomize-case/service.ts
new file mode 100644
index 0000000..a6f6860
--- /dev/null
+++ b/src/pages/string/randomize-case/service.ts
@@ -0,0 +1,6 @@
+export function randomizeCase(input: string): string {
+    return input
+        .split('')
+        .map(char => (Math.random() < 0.5 ? char.toLowerCase() : char.toUpperCase()))
+        .join('');
+}
\ No newline at end of file