diff --git a/tests/e2e/beautify.spec.ts b/tests/e2e/beautify.spec.ts
new file mode 100644
index 00000000..8741e12a
--- /dev/null
+++ b/tests/e2e/beautify.spec.ts
@@ -0,0 +1,94 @@
+import { expect, test, uploadTestImage, waitForProcessing } from "./helpers";
+
+// ---------------------------------------------------------------------------
+// GUI E2E: Beautify Screenshot Tool
+// ---------------------------------------------------------------------------
+
+test.describe("Beautify Screenshot", () => {
+  test("renders tool page with settings", async ({ loggedInPage: page }) => {
+    await page.goto("/beautify");
+    await expect(page.getByText("Beautify Screenshot").first()).toBeVisible();
+  });
+
+  test("uploads image and shows preview", async ({ loggedInPage: page }) => {
+    await page.goto("/beautify");
+    await uploadTestImage(page);
+    await page.waitForTimeout(1000);
+
+    // Verify the image appeared in the preview area
+    await expect(page.locator("img").first()).toBeVisible();
+  });
+
+  test("shows preset cards", async ({ loggedInPage: page }) => {
+    await page.goto("/beautify");
+
+    // Quick Presets section is open by default
+    await expect(page.getByText("Quick Presets").first()).toBeVisible();
+    await expect(page.getByText("Purple Haze").first()).toBeVisible();
+    await expect(page.getByText("Flamingo").first()).toBeVisible();
+    await expect(page.getByText("Ocean").first()).toBeVisible();
+  });
+
+  test("shows background, frame, spacing, and shadow sections", async ({ loggedInPage: page }) => {
+    await page.goto("/beautify");
+
+    await expect(page.getByText("Background").first()).toBeVisible();
+    await expect(page.getByText("Device Frame").first()).toBeVisible();
+    await expect(page.getByText("Spacing").first()).toBeVisible();
+    await expect(page.getByText("Shadow").first()).toBeVisible();
+  });
+
+  test("submit button uses data-testid", async ({ loggedInPage: page }) => {
+    await page.goto("/beautify");
+    await uploadTestImage(page);
+
+    await expect(page.getByTestId("beautify-submit")).toBeVisible();
+  });
+
+  test("processes image with default settings", async ({ loggedInPage: page }) => {
+    await page.goto("/beautify");
+    await uploadTestImage(page);
+    await page.waitForTimeout(1000);
+
+    // Click the Beautify button
+    const processBtn = page.getByTestId("beautify-submit");
+    await processBtn.click();
+    await waitForProcessing(page);
+
+    // Verify download is available
+    await expect(
+      page
+        .getByTestId("beautify-download")
+        .or(page.getByRole("link", { name: /download/i }).first()),
+    ).toBeVisible({ timeout: 15_000 });
+  });
+
+  test("applies preset and processes", async ({ loggedInPage: page }) => {
+    await page.goto("/beautify");
+    await uploadTestImage(page);
+    await page.waitForTimeout(1000);
+
+    // Click a preset card
+    const presetCards = page.locator("button").filter({ hasText: /purple haze|flamingo|ocean/i });
+    if (
+      await presetCards
+        .first()
+        .isVisible({ timeout: 3000 })
+        .catch(() => false)
+    ) {
+      await presetCards.first().click();
+      await page.waitForTimeout(500);
+    }
+
+    // Process
+    const processBtn = page.getByTestId("beautify-submit");
+    await processBtn.click();
+    await waitForProcessing(page);
+
+    await expect(
+      page
+        .getByTestId("beautify-download")
+        .or(page.getByRole("link", { name: /download/i }).first()),
+    ).toBeVisible({ timeout: 15_000 });
+  });
+});