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Repair Windows errors before they cause bigger problemsFix Now →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Clear out junk files and repair common Windows errorsFree Scan →If Scrapy Playwright returns only part of a page, first confirm that the request is actually routed through Playwright. Then check whether the missing content exists in the returned response.text. If it does not, wait for the page’s specific content or perform the interaction that loads it; if it does, fix the extraction selector instead. For infinite-scroll pages, scroll and wait for a concrete sign that new content appeared. The right fix depends on the target page, spider, and response, so there is no universal setting that resolves every partial render.
1. Confirm the request uses Playwright
Configuring the Playwright download handler does not send every Scrapy request through a browser. A request must opt in with meta={"playwright": True}, and the Playwright handler must be configured for the URL scheme being requested. Without both, Scrapy may use its ordinary download handler and return the server’s initial HTML rather than a browser-rendered page. The scrapy-playwright README documents the request opt-in and handler setup.
Check the project settings
Compare your settings with the current installation guidance in the project README. In particular, confirm that the HTTP and/or HTTPS download handler is set to the scrapy-playwright handler for the schemes your spider uses. A handler configured for one scheme does not establish that requests using another scheme are routed through it.
Check the individual request
For each request that needs browser rendering, inspect its metadata. A minimal request looks like this:
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yield scrapy.Request(
url="https://example.com",
meta={"playwright": True},
)Check redirects and requests created by follow-up callbacks too: a later request does not become a Playwright request merely because the first request used Playwright. Add the metadata where browser rendering is needed.
2. Find out whether rendering or extraction is failing
Before changing CSS or XPath, inspect the response Scrapy actually received. The scrapy-playwright response body is a serialization of the browser DOM at the time the response is returned; it is not a live page that continues updating after the callback begins. See the project’s README.
- Log the response URL and status, and save a representative part of
response.textfor the affected page. - Search the saved HTML for the missing text, a distinctive attribute, or the selector you expect to extract.
- If the node is present, test your selector against the saved response and check its scope, parent-child assumptions, and whether it matches the intended item.
- If the node is absent, investigate readiness, interactions, scrolling, and the response the site served to the browser.
This check separates two different problems: the browser may have returned before the content was added, or the content may already be present but your extraction code may not select it. A selector change cannot recover a node that is not in the returned DOM.
3. Wait for the content your spider needs
A completed navigation does not necessarily mean the application has rendered its main content. Use playwright_page_methods to run awaited Playwright actions before scrapy-playwright returns the response. Prefer a stable, content-specific selector over an arbitrary sleep. For example:
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from scrapy import Request
from scrapy_playwright.page import PageMethod
yield Request(
url="https://example.com",
meta={
"playwright": True,
"playwright_page_methods": [
PageMethod("wait_for_selector", "article .content"),
],
},
)Replace article .content with a selector that reliably signals the content you intend to scrape. If the selector is optional on some pages, account for that: an unbounded wait for an element that never appears can turn an extraction problem into a timeout. The project README describes PageMethod and page actions at the official project documentation.
Choose a useful readiness signal
- Wait for the article body, product detail, or other content container you extract, not merely the page title or a generic navigation element.
- If the page replaces a loading placeholder, wait for the finished content or for the placeholder to disappear, as appropriate for the page.
- If content appears only after an API response or user action, identify a DOM state that proves the content is ready rather than assuming navigation completion proves it.
4. Handle infinite scroll and interaction-dependent content
For infinite scroll, loading more content generally requires both an action and a wait. Scrolling to the bottom and immediately extracting can capture the page before its next items are inserted. Use a page method to wait for the initial item, scroll, and then wait for a later item or another explicit completion signal. The project README demonstrates waiting for an initial item, scrolling, and waiting for the eleventh item.
from scrapy import Request
from scrapy_playwright.page import PageMethod
yield Request(
url="https://example.com/list",
meta={
"playwright": True,
"playwright_page_methods": [
PageMethod("wait_for_selector", ".item:nth-child(1)"),
PageMethod("evaluate", "window.scrollTo(0, document.body.scrollHeight)"),
PageMethod("wait_for_selector", ".item:nth-child(11)"),
],
},
)Adapt the selectors and action to the site’s actual markup and loading behavior. If the page loads a fixed number of items per scroll, you may need repeated scroll-and-wait steps. If it uses a “Load more” button, wait for the button, click it, and wait for the item count or a new item to change. Avoid treating a fixed delay as proof that more content arrived: it can be too short on a slow response and unnecessarily long when the page is fast.
5. Check the browser’s request identity
scrapy-playwright sends Scrapy’s User-Agent by default. The README warns that a mismatch between that header and the running browser can cause unexpected site behavior. Compare the request identity and returned DOM before changing settings; do not assume a User-Agent mismatch is the cause merely because content is missing.
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If the evidence points to the User-Agent, set Scrapy’s USER_AGENT to None to use the browser’s default User-Agent, then compare the response DOM again. The project documents this behavior in its README.
When debugging a specific target, also inspect its final URL after redirects, authentication state, and failed page requests. These are things to verify against that page, not established causes of partial rendering in every crawl.
6. Manage included pages and callbacks correctly
You do not need playwright_include_page=True just to use PageMethod. Enable it only when your callback needs the Playwright Page object itself. If enabled, close that page after use and also handle request failures. Otherwise pages can accumulate against PLAYWRIGHT_MAX_PAGES_PER_CONTEXT, eventually stalling the crawl. See the official README for page lifecycle guidance.
A callback that awaits operations on the included page must be defined with async def. Be aware that network operations initiated by awaiting page methods such as goto run directly through Playwright rather than through Scrapy’s scheduler and middleware workflow. Prefer scheduled Scrapy requests when you need that workflow; use direct Playwright navigation only when you specifically need it.
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Close the page on success and failure
Use a try/finally pattern in an async callback so a parsing exception does not leave the page open. Add an errback for request failures too. For example, the lifecycle should have this shape:
async def parse(self, response):
page = response.meta["playwright_page"]
try:
# Read or interact with the page as needed.
yield {"url": response.url}
finally:
await page.close()
async def errback(self, failure):
page = failure.request.meta.get("playwright_page")
if page is not None and not page.is_closed():
await page.close()Use this pattern only when the request has playwright_include_page=True and the page is included in the response or failure metadata. If you do not need the page object, leave that option off and let the integration manage the page lifecycle.
7. A focused troubleshooting sequence
- Confirm routing. Check
meta={"playwright": True}on the affected request and verify the handler for its URL scheme. - Capture the evidence. Record the final
response.url, status, and a saved sample ofresponse.text. - Locate the missing content. If it exists in the HTML, test and correct the extraction selector. If absent, do not keep changing extraction code.
- Wait for readiness. Add a
PageMethod("wait_for_selector", ...)for a reliable content signal. - Reproduce interactions. For scroll or button-driven content, perform the action and wait for a later item or changed state.
- Compare request identity. Check the User-Agent and inspect redirects, authentication, and failed page requests; change a setting only when the response supports that diagnosis.
- Check cleanup. If the callback includes a page, make sure it closes on both success and error.
Or skip the browser setup
If your immediate goal is to get a clean screenshot of a website rather than to build a Scrapy extraction pipeline, ScreenshotNeo offers a one-request screenshot API. It is not a substitute for diagnosing a Scrapy response or extracting structured page data. For screenshot capture, one GET request returns an image or PDF, and the API’s clean-shot options can remove consent banners, newsletter popups, and chat widgets before capture.
For example, this cURL request saves a WebP screenshot of the target URL:
curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://example.com -o shot.webpSee the ScreenshotNeo API documentation for the key and request options. ScreenshotNeo says bot checks/CAPTCHAs, blank pages, timeouts, failed loads, and cache hits are not billed, with the result identified in response headers; it also provides an MCP server for AI agents. The free plan includes 1,000 screenshots per month with no card, and paid plans start at $5 for 3,000. Sign up for ScreenshotNeo’s free plan.
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8. Check installed versions before changing compatibility
The scrapy-playwright README’s mutable main branch, checked on September 29, 2026, reports requirements of Python 3.10 or newer, Scrapy 2.7 or newer, and Playwright 1.40 or newer. These are the README’s current stated floors, not a guarantee that every combination of newer releases is compatible. Check the current README alongside your installed versions before treating those numbers as current compatibility guidance.
9. Common symptoms and fixes
| Symptom | What to check | Next step |
|---|---|---|
| Response contains only initial HTML | Playwright metadata and scheme-specific handler configuration | Opt the request in with meta={"playwright": True} and confirm the configured handler matches the URL scheme. |
| Navigation succeeds, but the main section is absent | Whether the content selector exists in response.text |
If absent, wait for a content-specific selector or reproduce the interaction that loads it. |
| HTML contains the expected node, but no item is extracted | Selector syntax, scope, and assumptions about the DOM structure | Test the selector against the saved response before changing render timing. |
| Only the first batch of a list appears | Whether the site requires scrolling or a “Load more” action | Perform the action, then wait for a new item or another explicit state change. |
| Results vary between browser runs | User-Agent and the page response actually returned | Compare the DOM; if a User-Agent mismatch is implicated, try USER_AGENT = None and compare again. |
| Crawl stalls after pages are included | Whether every included page is closed, including failed requests | Close in a finally block and handle failures with an errback. |
10. What to include when the issue persists
The exact cause cannot be determined from the symptom alone. To make a site-specific diagnosis possible, collect the target URL, relevant request and spider code, installed Python/Scrapy/Playwright/scrapy-playwright versions, request metadata, final response URL and status, and a small sanitized sample of the returned DOM around the expected content. Do not include credentials, session cookies, or other secrets in a public issue.
The project’s FAQ may help with integration questions: scrapy-playwright FAQ. An issue titled “Scrapy callback not executing and is never reached” is one user’s report, not evidence that callbacks commonly fail or that it explains another site’s partial page: issue #194.
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Frequently Asked Questions
Does playwright_include_page=True make Scrapy wait for more content?
No. It exposes the Playwright Page object to the callback; use playwright_page_methods to run awaited actions before the response is returned.
Why might a callback not be reached?
That symptom needs its own diagnosis; check the request lifecycle and error handling rather than treating one issue report as proof of a general scrapy-playwright failure.
Can I fix a missing DOM node by changing my CSS selector?
Only if the node is present in the returned HTML. If it is absent from response.text, address routing, readiness, interaction, or the page response first.
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