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Playwright Screenshot Shows the Sign-In Page After Login: How to Debug It

Check the final URL and a positive authenticated UI signal before saving Playwright storage state or capturing a screenshot. Then trace redirects, state reuse, and capture errors separately.
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If a Playwright screenshot shows the sign-in page after you submit credentials, first check what page the browser actually reached and whether the application shows a positive sign that login succeeded. Save authentication state and take the screenshot only after those checks pass. A screenshot of the sign-in page is an observation, not proof of why the redirect happened.

Verify the login before saving state or taking a screenshot

Wait for the application’s expected post-login URL, then check an authenticated control such as an account menu or profile button. A URL check alone may not mean the app has finished establishing its session. Playwright’s authentication guide uses a final-URL check and an authenticated UI signal before writing storage state: Playwright authentication.

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import { test, expect } from '@playwright/test';

test('sign in and capture the authenticated page', async ({ page }) => {
  await page.goto('https://example.com/sign-in');
  await page.getByLabel('Email').fill(process.env.TEST_EMAIL!);
  await page.getByLabel('Password').fill(process.env.TEST_PASSWORD!);
  await page.getByRole('button', { name: 'Sign in' }).click();

  // Replace this with the exact destination expected by your application.
  await page.waitForURL('https://example.com/dashboard');
  await expect(page.getByRole('button', { name: 'Account' })).toBeVisible();

  // If another test/context needs to reuse authentication, save only now.
  await page.context().storageState({ path: 'playwright/.auth/user.json' });
  await page.screenshot({ path: 'authenticated.png', fullPage: true });
});

Use the real sign-in URL, destination, labels, and authenticated marker from your app. If the destination contains a variable path or query string, provide a deliberate URL pattern that still verifies the expected origin and route. Playwright recommends explicitly waiting for the intended URL when an action may trigger multiple navigations; its navigation guidance is at Playwright navigations.

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Trace what happened when the page returned to sign-in

  1. Check the final URL. Log page.url() after the submit and inspect the redirect chain or network trace. Confirm whether the browser reached the expected destination, stayed on the sign-in route, or went to an identity-provider step.
  2. Check an app-specific authenticated signal. Assert a visible account control or another UI element that only appears for an authenticated user. Use a locator appropriate to the application rather than treating a successful button click as proof of login.
  3. Inspect saved state from that run. If the workflow creates a separate context for screenshots, load the storage state only after the URL and UI checks pass. Compare the state safely; do not print cookie values, tokens, or authorization headers in CI logs.
  4. Separate page content from capture failure. If Playwright returns an image of the sign-in page, investigate navigation and authentication. If screenshot capture throws, preserve the exception and trace: that is a capture error, not necessarily a redirect.

These observations help narrow the problem, but the title alone cannot identify its cause. Possible explanations to investigate include rejected credentials, a required identity-provider step, an unexpected redirect target, or a session that was not established. Confirm the application’s own expected flow before concluding which applies.

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Reuse storage state safely in a separate screenshot context

When login setup and screenshots run in different tests or contexts, write the state after successful authentication and create the later context with that file. Playwright documents a setup-project pattern for this: authentication and reusable state.

const context = await browser.newContext({
  storageState: 'playwright/.auth/user.json'
});
const page = await context.newPage();
await page.goto('https://example.com/dashboard');
await expect(page.getByRole('button', { name: 'Account' })).toBeVisible();
await page.screenshot({ path: 'dashboard.png', fullPage: true });

Saved browser state can contain cookies and headers that allow someone to impersonate the account. Keep it out of source control, restrict access to it, and use a test account with only the permissions the test requires. Playwright explicitly warns against committing authentication state: Playwright authentication guidance.

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Use screenshot assertions only after authentication is established

expect(page).toHaveScreenshot() is a visual comparison, not an authentication check. Playwright waits for two consecutive screenshots to match before comparing them; animations are disabled and the caret is hidden by default. First assert the final URL and authenticated UI, then run the snapshot assertion. See Playwright visual comparisons.

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Troubleshoot the common failure patterns

  • Final URL remains the sign-in route: inspect the form result and application redirect behavior. Verify test credentials and whether a second identity-provider step is required.
  • Expected URL appears, but the account marker is absent: wait for the app’s authenticated UI state and inspect whether session initialization completed. Do not save state merely because navigation occurred.
  • Local run passes but CI returns to sign-in: compare the final URL and presence of expected state without logging secrets. A GitLab issue describes one CI timeout waiting for / alongside storage state without the expected token; it is an individual report, not evidence that CI generally causes login failures: Playwright issue report.
  • Screenshot call throws during SAML: keep the exception and trace, and distinguish it from an image that successfully captured the sign-in page. One report describes intermittent Chromium CDP Page.captureScreenshot failures during SAML login; it does not establish a general cause: SAML screenshot issue report.
  • Visual snapshot is unstable: once authentication is verified, inspect changing page content and use Playwright’s screenshot assertion behavior appropriately. Snapshot stabilization does not resolve login redirects.

Or skip the browser setup

If you need a screenshot endpoint rather than a Playwright login workflow, ScreenshotNeo takes website screenshots and PDFs through a single request. For example:

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curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://stripe.com -o shot.webp

See the ScreenshotNeo API documentation for request options. It accepts cookie/consent banners and removes supported consent platforms, newsletter popups, and chat widgets before capture; bot checks, blank pages, and failed loads are not billed. Its MCP server lets AI agents take screenshots, and the free plan includes 1,000 screenshots per month with no card; paid plans start at $5 for 3,000. This does not replace an authenticated Playwright flow when you need to test your own login or capture a page that requires a session.

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Frequently Asked Questions

Does a screenshot showing the sign-in page prove that Playwright login failed?

No. It shows the page at capture time; check the final URL and an authenticated UI signal to determine what happened.

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Can `toHaveScreenshot()` confirm that the user is authenticated?

No. It stabilizes and compares visuals; authentication should be established with URL and application UI checks first.

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