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1. Check whether this test has authenticated browser state
Playwright creates isolated browser contexts for tests, so a login in one context does not automatically authenticate a separately created context. Confirm that the test opening the dashboard uses the intended context and, if you use saved authentication, that it is configured with the correct storageState file. See Playwright’s authentication guide.
Reuse saved state only after a successful login
A common setup is to sign in once in a setup project, verify that sign-in succeeded, save the state, and make dependent projects use that state. Do not save state immediately after clicking the login button: first wait for the final URL or assert a reliable authenticated element. Otherwise, you may save state before the application has finished setting cookies.
Authentication can expire. When it does, remove or regenerate the stored state rather than treating the login-page screenshot as a rendering problem. Playwright also notes that UI mode does not run the setup project by default, so check whether your test run actually refreshed the state.
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Check where the application stores authentication
Playwright’s ordinary storageState covers cookies and local storage, and can include IndexedDB when requested. It does not automatically persist sessionStorage. If your application relies on session storage, use the save-and-restore approach described in the authentication guide, such as restoring the needed values with an initialization script before the app runs.
2. Wait for the login flow, then prove the dashboard is ready
A completed click is not proof that a redirect chain finished or that the application has established its authenticated state. Wait for the final destination and assert a stable dashboard condition before taking the screenshot. Replace the example route and heading with values that uniquely identify your application’s signed-in page.
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import { test, expect } from '@playwright/test';
test('captures the dashboard after sign-in', async ({ page }) => {
await page.goto('/login');
// Perform the application's login steps here.
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();
await page.waitForURL('**/dashboard');
await expect(page.getByRole('heading', { name: 'Dashboard' })).toBeVisible();
await page.screenshot({ path: 'dashboard.png' });
});This example assumes the login form has accessible labels and a button named “Sign in”; adapt the locators to your app. Prefer role, label, or other user-facing locators when they identify the intended control clearly; Playwright’s locator guidance covers locator choices. The PageAssertions API documents retrying web-first assertions such as toBeVisible().
Choose a condition that distinguishes the dashboard from the login page
- Wait for the actual final URL when the route is stable and meaningful, for example
await page.waitForURL('**/dashboard'). - Assert an authenticated-only heading, account menu, or other stable dashboard element with
await expect(locator).toBeVisible(). - For an application that keeps the same URL after login, rely on a dashboard-specific UI assertion rather than a URL wait alone.
A document load state only describes document loading; it does not establish that the application has rendered the authenticated dashboard. Playwright says waitForLoadState() is often unnecessary and discourages using networkidle as a test readiness signal. Use a condition tied to the page state your test actually needs; see the Page API.
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3. Prepare authentication state safely when tests share it
If multiple tests need an authenticated session, save state in a setup step and apply it to the relevant project or test. For tests that only read data, a shared account may be suitable. If tests change shared server-side data, parallel tests can interfere with one another; Playwright’s authentication guide describes using separate accounts and per-worker state for that situation. Choose based on whether tests mutate shared data, not just on whether they run in parallel.
Authentication-state files can contain cookies and headers that could allow someone else to impersonate the account. Do not commit them to source control. Keep them in an appropriately protected, ignored location, and regenerate them when the authentication expires.
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4. Diagnose the exact point where state is lost
If the URL and UI assertions do not explain the failure, enable a Playwright trace and inspect the run in Trace Viewer. It provides action timing, source locations, DOM snapshots, screenshots, and logs, which can show whether the login action completed, what redirects followed, and what the page looked like at capture time. See Trace Viewer.
Common causes and fixes
| Symptom | Likely cause | What to check or change |
|---|---|---|
| Login succeeds in one test but another captures the login page | The second test uses a new isolated context without the first test’s authentication state. | Configure the second test or project to use the intended storageState, or authenticate in that test’s context. |
| Tests used to work, then began showing login | Saved authentication expired or was not refreshed. | Regenerate the state after verifying a successful login. Check whether the run, including UI mode, actually ran the setup step. |
| The test clicks Sign in and immediately saves state or captures | The redirect or cookie-setting work has not finished. | Wait for the final URL or assert an authenticated UI element before saving state or capturing. |
| Cookies and local storage appear present, but the app still asks for login | The application may depend on sessionStorage, which ordinary Playwright storage state does not persist. |
Use the documented session-storage save-and-restore approach in the authentication guide. |
| Screenshot runs after a load wait but still shows a transitional or login screen | A document load event was mistaken for application readiness. | Wait for and assert a dashboard-specific URL or element instead of relying on networkidle or a generic load state. |
| The failure is intermittent or the redirect sequence is unclear | The timing or state transition is not obvious from the test output. | Inspect a trace’s actions, DOM snapshots, screenshots, and logs in Trace Viewer. |
Or skip the browser setup
For a rendered-page screenshot that does not need your Playwright test’s authenticated session, ScreenshotNeo can capture a URL with one request. It is a screenshot API and MCP server for developers. Cookie and consent banners are accepted before capture, and more than 60 known consent platforms, newsletter popups, and chat widgets can be removed; each step can be turned off. Bot checks and CAPTCHAs, blank pages, timeouts, failed loads, and cache hits are not billed, with the response indicating the page verdict and billing status in headers. Its MCP server provides take_screenshot, get_page_info, and capture_pdf for AI agents and other MCP clients. The free plan includes 1,000 screenshots a month with no card; paid plans start at $5 for 3,000.
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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.webpFor a direct browser-rendered dashboard that requires a particular signed-in session, fix and verify Playwright’s authentication state as described above; an independent URL screenshot request does not inherit the session from your test. Learn about ScreenshotNeo or sign up for 1,000 free screenshots a month with no card.
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