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To capture a page behind a login with Apify, run a browser in an Actor, authenticate with an account authorized to access the site, navigate to the protected page, wait for the content you need, and save the screenshot to an Apify key-value store. The login flow and selectors are site-specific; the example below is a starting point, not a universal login script.
What you need before capturing a protected page
- An Apify Actor project with a supported browser-automation library. Apify documents screenshot capture with Puppeteer and says a similar example can be implemented with Playwright; choose the library already supported by your project rather than assuming one is universally better.
- Permission to use the account and access the target page. Check the site’s current terms and access rules; authentication does not itself grant permission to automate or capture a page.
- The target site’s actual login steps and selectors. Fields, redirects, consent screens, multifactor prompts, and anti-automation controls vary. Apify Academy’s login lesson uses Yahoo as a teaching example, not a universal selector map.
Apify’s JavaScript SDK screenshot documentation: Capture a screenshot. Login and session examples: Log in to a website. Check the API methods against the SDK version installed in your Actor.
Capture a logged-in screenshot in an Apify Actor
The workflow has five parts: launch the browser, perform the site’s login flow, open the protected URL, wait for the relevant state, and write the image to key-value storage. Replace the illustrative selectors and environment-variable names with those for your project and target site. Keep credentials in protected Actor input or secrets rather than committing them in source.
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- Launch a browser. Use the browser and runtime setup supported by the SDK version in your project.
- Log in. Fill the site’s real fields and submit the form. Handle redirects, MFA, consent, or other expected steps as needed; do not bypass access controls.
- Open the protected page. Navigate only after the login flow has completed and the browser has an authenticated session.
- Wait for the page state you need. Wait for navigation and, for dynamic pages, a selector that identifies the specific content to capture.
- Capture and store the image. Save the screenshot buffer with an image content type in the Actor’s key-value store.
Apify’s SDK example uses Puppeteer and notes that it would look almost the same with Playwright. The following is a Puppeteer-shaped outline; confirm imports and storage calls for your installed SDK generation before using it as an Actor entry point:
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import { Actor } from 'apify';
import puppeteer from 'puppeteer';
await Actor.init();
const input = await Actor.getInput();
const loginUrl = input.loginUrl;
const pageUrl = input.pageUrl;
const username = input.username;
const password = input.password;
if (!loginUrl || !pageUrl || !username || !password) {
throw new Error('Provide loginUrl, pageUrl, username, and password in Actor input.');
}
const browser = await puppeteer.launch({ headless: true });
try {
const page = await browser.newPage();
await page.goto(loginUrl, { waitUntil: 'domcontentloaded' });
// Replace these example selectors with the target site's real login controls.
await page.locator('input[name="username"]').fill(username);
await page.locator('input[name="password"]').fill(password);
await Promise.all([
page.waitForNavigation({ waitUntil: 'domcontentloaded' }),
page.locator('button[type="submit"]').click(),
]);
await page.goto(pageUrl, { waitUntil: 'domcontentloaded' });
// Replace with a selector that proves the content you need is present.
await page.waitForSelector('[data-page-ready="true"]');
const image = await page.screenshot({ fullPage: true, type: 'png' });
await Actor.setValue('logged-in-page.png', image, { contentType: 'image/png' });
} finally {
await browser.close();
await Actor.exit();
}This illustrates the sequence, not a guarantee that every site submits a conventional form or triggers a full-page navigation. Some applications use client-side transitions; in those cases, wait for an authenticated marker or the target content instead of relying on waitForNavigation. The exact screenshot and storage APIs can vary with SDK generation, so use the matching Apify documentation for the version your project runs.
Wait for the right content before taking the screenshot
A browser’s load event is not proof that a modern page is visually complete. Apify’s waiting guide recommends waiting for navigation before capturing a loaded page. For pages that fetch content asynchronously, also wait for a specific selector or state that matters to your screenshot.
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- Use a navigation wait when login submission or a link causes a document navigation.
- Use a target selector when a single content area must appear before capture.
- Use a delay only when you have a known, justified timing need; a fixed pause can still be too short or needlessly long.
- For long pages, use full-page capture when the whole document is needed. If content loads only as it enters the viewport, scroll or otherwise trigger it before capturing and verify that the resulting image includes it.
Apify’s screenshot example shows the capture and key-value storage pattern. Store the returned image buffer with an appropriate image content type, such as image/png, and check the Actor’s key-value store for the output.
Reuse login cookies when a later run needs the session
Apify Academy demonstrates retrieving cookies from a Playwright browser context or a Puppeteer page. Cookies can let a later browser context continue an authenticated session, but they are session credentials: restrict access, do not print them to logs, and do not expose them in source code or shared output.
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Cookie reuse is not a substitute for a reliable login flow. Sessions expire or may be bound to other state, and the target site can require renewed authentication or MFA. If a saved session no longer works, return to the authorized login flow rather than assuming a screenshot failure is caused by the capture step.
Where Apify saves the screenshot and who can access it
Apify key-value stores hold arbitrary files and records, making them a suitable place for screenshot output. Resource access depends on account configuration and explicit permissions, so check the settings for the store and Actor run instead of assuming the image is public or private. Apify documents key-value stores and resource access.
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Troubleshoot common capture failures
| Symptom | Likely cause | What to check |
|---|---|---|
| The screenshot shows the login page | The login did not complete, the session was not retained, or the protected URL redirected back to sign-in. | Confirm the login selectors and submit behavior for the actual site, inspect the final URL and authenticated page state, and account for MFA or consent steps. |
| The Actor times out while waiting for navigation | The app may use a client-side transition instead of a full document navigation, or the submit action did not succeed. | Verify the submit result. For a single-page app, wait for a visible authenticated marker or target selector instead of a navigation event. |
| The image is blank or missing key content | The capture happened before the relevant asynchronous content rendered, or the expected content never appeared. | Wait for a selector specific to the needed content and inspect whether that selector appears before taking the screenshot. |
| Cookie reuse stops working | The session may have expired or the site may require renewed authentication. | Run the authorized login flow again and avoid logging or exposing session cookies. |
| The screenshot cannot be retrieved | The key-value-store output or its permissions may not match expectations. | Confirm the Actor wrote the image under the expected key with an image content type, then inspect the store’s configured access permissions. |
Or skip the browser setup
If you need a screenshot API rather than an Actor that signs into a protected site, ScreenshotNeo is an alternative for website screenshot capture. Its one-request API returns an image or PDF, but it does not replace the custom authenticated browser workflow above for pages requiring a login.
For a page the API can access, make one GET request (see the ScreenshotNeo API documentation):
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Frequently Asked Questions
Can I use Playwright instead of Puppeteer in an Apify Actor?
Yes. Apify’s screenshot example says a similar implementation can be made with Playwright; use the library and API version supported by your project.
Does this workflow work with every login-protected website?
No. Authentication steps, selectors, MFA, session behavior, and automation controls differ by site, so adapt the flow and use only accounts and pages you are authorized to access.
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Can ScreenshotNeo capture a page that requires my login?
The one-call example is for a page the API can access; it does not replace a custom browser workflow for a protected page that requires authentication.
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