diff --git a/src/helpers/global.helper.ts b/src/helpers/global.helper.ts
index 6f2acb7..df4b0e0 100644
--- a/src/helpers/global.helper.ts
+++ b/src/helpers/global.helper.ts
@@ -50,6 +50,50 @@ export const extractId = (idOrUrl: number | string): number | null => {
   return null;
 };
 
+/**
+ * Extracts a user ID or text slug from a number, string, slug, or full URL.
+ * Designed for Developer Experience (DX) to allow flexible inputs for user endpoints.
+ */
+export const extractUser = (userOrUrl: number | string): number | string | null => {
+  if (typeof userOrUrl === 'number') {
+    return isNaN(userOrUrl) ? null : userOrUrl;
+  }
+
+  if (typeof userOrUrl === 'string') {
+    // Pure number string
+    if (/^\d+$/.test(userOrUrl)) {
+      return Number(userOrUrl);
+    }
+
+    // Check if it's a URL
+    if (userOrUrl.includes('/')) {
+      const parts = userOrUrl.split('/').filter(Boolean);
+      const uzivatelIndex = parts.indexOf('uzivatel');
+      if (uzivatelIndex !== -1 && parts.length > uzivatelIndex + 1) {
+        const userSlug = parts[uzivatelIndex + 1];
+        // If slug is numeric, return number, else return slug string
+        if (/^\d+-/.test(userSlug)) {
+          return +userSlug.split('-')[0] || null;
+        }
+        if (/^\d+$/.test(userSlug)) {
+          return +userSlug || null;
+        }
+        return userSlug;
+      }
+    }
+
+    // Direct numeric slug with ID prefix (e.g. "912-hobit")
+    if (/^\d+-/.test(userOrUrl)) {
+      return +userOrUrl.split('-')[0] || null;
+    }
+
+    // Return string slug as fallback (e.g. "admin")
+    return userOrUrl;
+  }
+
+  return null;
+};
+
 export const parseLastIdFromUrl = (url: string): number => {
   if (url) {
     const idSlug = url?.split('/')[3];
diff --git a/src/services/user-ratings.service.ts b/src/services/user-ratings.service.ts
index 09244fe..5f00cea 100644
--- a/src/services/user-ratings.service.ts
+++ b/src/services/user-ratings.service.ts
@@ -2,7 +2,7 @@ import { HTMLElement, parse } from 'node-html-parser';
 import { CSFDColorRating, CSFDFilmTypes, CSFDStars } from '../dto/global';
 import { CSFDUserRatingConfig, CSFDUserRatings } from '../dto/user-ratings';
 import { fetchPage } from '../fetchers';
-import { sleep } from '../helpers/global.helper';
+import { extractUser, sleep } from '../helpers/global.helper';
 import {
   getUserRating,
   getUserRatingColorRating,
@@ -22,9 +22,14 @@ export class UserRatingsScraper {
     config?: CSFDUserRatingConfig,
     options?: CSFDOptions
   ): Promise<CSFDUserRatings[]> {
+    const userIdOrSlug = extractUser(user);
+    if (userIdOrSlug === null || (typeof userIdOrSlug === 'number' && isNaN(userIdOrSlug))) {
+      throw new Error('node-csfd-api: user must be a valid number, slug, or url');
+    }
+
     let allMovies: CSFDUserRatings[] = [];
     const pageToFetch = config?.page || 1;
-    const url = userRatingsUrl(user, pageToFetch > 1 ? pageToFetch : undefined, {
+    const url = userRatingsUrl(userIdOrSlug, pageToFetch > 1 ? pageToFetch : undefined, {
       language: options?.language
     });
     const response = await fetchPage(url, { ...options?.request });
@@ -40,7 +45,7 @@ export class UserRatingsScraper {
     if (config?.allPages) {
       for (let i = 2; i <= pages; i++) {
         config.onProgress?.(i, pages);
-        const url = userRatingsUrl(user, i, { language: options?.language });
+        const url = userRatingsUrl(userIdOrSlug, i, { language: options?.language });
         const response = await fetchPage(url, { ...options?.request });
 
         const items = parse(response);
diff --git a/src/services/user-reviews.service.ts b/src/services/user-reviews.service.ts
index 88f5f49..eb00971 100644
--- a/src/services/user-reviews.service.ts
+++ b/src/services/user-reviews.service.ts
@@ -2,7 +2,7 @@ import { HTMLElement, parse } from 'node-html-parser';
 import { CSFDColorRating, CSFDFilmTypes, CSFDStars } from '../dto/global';
 import { CSFDUserReviews, CSFDUserReviewsConfig } from '../dto/user-reviews';
 import { fetchPage } from '../fetchers';
-import { sleep } from '../helpers/global.helper';
+import { extractUser, sleep } from '../helpers/global.helper';
 import {
   getUserReviewColorRating,
   getUserReviewDate,
@@ -24,9 +24,14 @@ export class UserReviewsScraper {
     config?: CSFDUserReviewsConfig,
     options?: CSFDOptions
   ): Promise<CSFDUserReviews[]> {
+    const userIdOrSlug = extractUser(user);
+    if (userIdOrSlug === null || (typeof userIdOrSlug === 'number' && isNaN(userIdOrSlug))) {
+      throw new Error('node-csfd-api: user must be a valid number, slug, or url');
+    }
+
     let allReviews: CSFDUserReviews[] = [];
     const pageToFetch = config?.page || 1;
-    const url = userReviewsUrl(user, pageToFetch > 1 ? pageToFetch : undefined, {
+    const url = userReviewsUrl(userIdOrSlug, pageToFetch > 1 ? pageToFetch : undefined, {
       language: options?.language
     });
     const response = await fetchPage(url, { ...options?.request });
@@ -42,7 +47,7 @@ export class UserReviewsScraper {
     if (config?.allPages) {
       for (let i = 2; i <= pages; i++) {
         config.onProgress?.(i, pages);
-        const url = userReviewsUrl(user, i, { language: options?.language });
+        const url = userReviewsUrl(userIdOrSlug, i, { language: options?.language });
         const response = await fetchPage(url, { ...options?.request });
 
         const items = parse(response);
diff --git a/tests/helpers.test.ts b/tests/helpers.test.ts
index a479925..2b75474 100644
--- a/tests/helpers.test.ts
+++ b/tests/helpers.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, test } from 'vitest';
-import { addProtocol, extractId, parseColor, parseIdFromUrl } from '../src/helpers/global.helper';
+import { addProtocol, extractId, extractUser, parseColor, parseIdFromUrl } from '../src/helpers/global.helper';
 
 describe('Add protocol', () => {
   test('Handle without protocol', () => {
@@ -67,6 +67,27 @@ describe('extractId', () => {
   });
 });
 
+describe('extractUser', () => {
+  test('should return number for numeric input', () => {
+    expect(extractUser(912)).toBe(912);
+  });
+  test('should return number for numeric string input', () => {
+    expect(extractUser('912')).toBe(912);
+  });
+  test('should return number for slug input', () => {
+    expect(extractUser('912-hobit')).toBe(912);
+  });
+  test('should return number for full url with numeric slug', () => {
+    expect(extractUser('https://www.csfd.cz/uzivatel/912-hobit/')).toBe(912);
+  });
+  test('should return string for text slug', () => {
+    expect(extractUser('admin')).toBe('admin');
+  });
+  test('should return string for full url with text slug', () => {
+    expect(extractUser('https://www.csfd.cz/uzivatel/admin/')).toBe('admin');
+  });
+});
+
 describe('Parse color', () => {
   test('Red', () => {
     const url = parseColor('red');