To capture a page after Playwright reports network idle, configure the Playwright MCP server, navigate to the page, explicitly wait with page.waitForLoadState('networkidle') using browser_run_code_unsafe, and then call browser_take_screenshot. The server configuration exposes the tools; it does not automatically make screenshots wait for network idle.
Configure the Playwright MCP server
You need Node.js 20 or newer and an MCP client. Add the server entry below to the configuration file used by your client:
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{
"mcpServers": {
"playwright": {
"command": "npx",
"args": ["@playwright/mcp@latest"]
}
}
}The configuration file location depends on the MCP client. Playwright’s getting-started guide includes setup examples for VS Code, Cursor, Claude Code, Claude Desktop, and other clients. Once configured, make sure the server is available in the client before running the capture sequence.
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Run these three actions in the same Playwright browser session, in order:
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-
Call
browser_navigatewith the page URL. -
Call
browser_run_code_unsafewith this Playwright function:async (page) => { await page.waitForLoadState('networkidle'); return 'Network idle reached'; } -
Call
browser_take_screenshotwith the capture options you need. For a full-page image, setfullPage: trueand provide a filename such aspage.png. To capture only the viewport, omit bothfullPageandtarget.
The wait is explicit because the documented configuration has no switch that couples browser_take_screenshot to Playwright’s networkidle state. The core tools include navigation, screenshot capture, code execution, and browser_wait_for; configuration options can control browser and context behavior, network rules, timeouts, and output settings. Settings can be supplied through a config file, environment variables, and command-line arguments, with command-line arguments taking precedence. See the Playwright MCP documentation for the available setup and options.
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Choose the right screenshot scope and output
browser_take_screenshot captures the current viewport by default. Choose one of these modes:
-
Viewport: omit
fullPageandtargetto capture what is currently visible. -
Element: set
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-
Full page: set
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Supported image types are PNG, JPEG, and WebP. A filename sets the saved name; relative filenames resolve from the workspace root. If you omit the filename, the tool returns an automatically named image in the output directory and inline in the response unless image responses are omitted. The scale option accepts css (the default) or device, which uses device-pixel-ratio sizing. These options are documented in the MCP screenshot tool reference.
Know what network idle does—and does not—tell you
Playwright defines networkidle as having no network connections for at least 500 milliseconds. That is a network-activity heuristic, not proof that every visual update or application task has finished. A page may continue changing after the wait completes.
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Playwright’s API guidance discourages using network idle to assess readiness in tests and recommends relying on web assertions instead. If a particular page element or response is a better signal that the content you need is ready, wait for that application-specific condition rather than treating network quiet as visual completion.
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-
The wait never returns: the page may keep network connections open or make recurring requests. Use a page-specific readiness condition, such as waiting for the relevant element or response, instead of requiring network idle.
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The screenshot is taken too early despite the wait: network idle only indicates a period without network connections. If the page updates later, wait for the element or application state that signals the content you want.
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-
browser_wait_fordoes not wait for network idle: that MCP tool accepts text to appear or disappear, or a delay capped at 30 seconds. It does not accept a Playwright load-state parameter. Usebrowser_run_code_unsafeto callpage.waitForLoadState('networkidle'). -
Code execution is unavailable: the explicit network-idle sequence relies on
browser_run_code_unsafe. Confirm that the tool is exposed by the server and permitted by your MCP client. -
The code execution tool raises a security concern: it runs arbitrary JavaScript in the Playwright server process and is documented as equivalent to remote code execution. Use it only when you trust the MCP server and client configuration.
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Element and full-page options conflict: remove
targetfor a full-page image, or turn offfullPageto capture a target element.
Or skip the browser setup
If you want a screenshot through an API instead of configuring a browser session, ScreenshotNeo provides a one-request capture. For example, this cURL call saves a WebP screenshot of Stripe:
curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://stripe.com -o shot.webpSee the ScreenshotNeo API documentation for request options. It removes cookie banners, newsletter popups, and chat widgets before the screenshot; bot checks, blank pages, and failed loads are never billed. Its MCP server lets AI agents take screenshots, and the free plan includes 1,000 screenshots a month with no card; paid plans start at $5 for 3,000. Learn about ScreenshotNeo, or sign up for 1,000 free screenshots a month with no card.
Frequently Asked Questions
Can I use a fixed delay instead of waiting for network idle?
Yes. In Playwright MCP, browser_wait_for accepts a delay of up to 30 seconds, but a delay does not establish that a particular page element is ready.
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Quick Recap
Which image formats can Playwright MCP return?
The screenshot tool supports PNG, JPEG, and WebP.
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