recei and clear the code

src/app/utils/zod.ts

@@ -35,10 +35,7 @@ export const zodDataUrlSchema = z.string().refine(value => value.startsWith('dat
  * ```
  */
 export const base64Schema = z.string().refine(value => {
-  // Regular expression for Base64 validation
-  const isBase64 = /^[A-Za-z0-9+/=]*$/.test(value) && (value.length % 4 === 0);
-  // Check if the first 20 characters do not contain a comma
-  return isBase64 && !value.substring(0, 20).includes(',');
+  return !value.slice(0, 20).includes(',');
 }, {
   message: 'Invalid Base64 string or comma found in the first 20 characters'
 });