In Selenium Python, navigate to the page, wait for the document or page-specific content you need, then call driver.save_screenshot("page.png"). Selenium’s default navigation strategy waits for the document’s readyState to reach complete; for content added later by JavaScript, use an explicit wait for a meaningful element or state before capturing.
Capture after the content you need is ready
For a page whose desired content is present when navigation completes, Selenium’s default page-load strategy is usually sufficient. For a single-page application, search results, or another component populated asynchronously, wait for that specific content rather than assuming document readiness means the whole application is finished.
from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.support.ui import WebDriverWait
with webdriver.Chrome() as driver:
driver.get("https://example.com")
# Choose a selector that appears when the content for your screenshot is ready.
WebDriverWait(driver, 15).until(
EC.visibility_of_element_located((By.CSS_SELECTOR, "main .results"))
)
driver.save_screenshot("page.png")Replace the example URL, selector, and timeout with values appropriate to your site. The selector must identify an element that represents readiness for the content you want in the image. The explicit wait polls until its condition succeeds or the timeout expires. Selenium’s Waiting Strategies documentation describes this condition-based approach.
What Selenium means by “page loaded”
During URL navigation, Selenium’s default normal page-load strategy waits for the document readiness state complete. That threshold covers resources associated with the document, but it cannot guarantee that a JavaScript application has finished later updates, API requests, animations, or other work. See Selenium’s official Browser Options guide.
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The alternatives change when navigation returns, not whether an application-specific element is ready:
| Strategy | Navigation threshold | Use and trade-off |
|---|---|---|
normal (default) |
Waits for readyState complete. |
Appropriate when the screenshot content is available by document completion; navigation may wait for more resources. |
eager |
Returns at interactive / the DOMContentLoaded threshold. |
Can return sooner, while resources such as images may still be loading. |
none |
Does not block on document readiness. | Returns without waiting for document readiness; use only when your workflow handles readiness separately. |
These are session-level options. Even with normal, eager, or none, use an explicit wait for the actual content or state needed in the screenshot when it is produced after navigation.
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Choose a wait condition that matches the screenshot
A wait should observe the outcome you need, not merely consume a fixed amount of time. Selenium’s explicit wait supports conditions such as an element being present or visible. For a screenshot of updated results, wait for the results container or another reliable signal that the update occurred. The example above uses visibility; adapt it to the page’s actual markup and behavior.
- Use document readiness alone when the required content is already in the document at navigation completion.
- Use an explicit element or state wait for content that appears after an API response, user action, or other JavaScript work.
- A fixed sleep may wait too long on a fast run and still be too short on a slow one; a condition-based wait ends when the selected condition succeeds or times out.
Do not casually combine implicit and explicit waits. Selenium warns that mixing them can lead to unpredictable wait durations. For this capture step, a targeted explicit wait makes the readiness requirement local and clear.
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Save the screenshot
After the wait succeeds, driver.save_screenshot("page.png") saves the current window as a PNG file. If your program needs the image bytes instead of a file, Selenium’s Python WebDriver API also provides get_screenshot_as_png(). Consult the Selenium Python WebDriver API for these methods.
Troubleshoot a screenshot that is early or missing
The screenshot is taken before results appear
Document completion can happen before a single-page application finishes its later JavaScript work. Add an explicit wait for an element or state that corresponds to the results, then capture only after that wait succeeds.
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The explicit wait times out
Check that the locator matches the current page, the expected condition matches what the page actually does, and the browser is in the expected window or frame. Also check whether a navigation, overlay, or page transition changed the context. Increase the timeout only if the condition is correct and the site reasonably needs more time; a larger timeout does not fix a wrong selector or a condition that never occurs.
Navigation itself times out
A page-load timeout limits how long Selenium waits for navigation; it is not proof that application-specific asynchronous work has completed. Treat navigation timeout handling and the explicit wait for screenshot readiness as separate concerns. Selenium’s Python WebDriver API documents the driver’s timeout behavior.
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The image file is not where expected
save_screenshot writes the PNG using the path supplied to it. Use an explicit output path if your job’s working directory is not predictable, and ensure the process can write to that location.
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ScreenshotNeo can return a screenshot or PDF with one GET request, without you managing a Selenium browser session. Its capture process accepts cookie and consent banners like a visitor and removes more than 60 known consent platforms, newsletter popups, and chat widgets before the shot; each of those steps can be turned off. Bot checks or CAPTCHAs, blank pages, timeouts, failed loads, and cache hits are not billed, and response headers report the page verdict and billing status. ScreenshotNeo also offers an MCP server with take_screenshot, get_page_info, and capture_pdf tools for AI agents.
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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 documentation for request options. The Free plan includes 1,000 screenshots per month with no card; paid plans start at $5 for 3,000. Sign up for ScreenshotNeo and get 1,000 free screenshots a month with no card.
Frequently Asked Questions
Does Selenium have a built-in command that waits for every JavaScript update?
No single document-readiness threshold guarantees that all application-specific JavaScript work is finished. Wait for a page-specific condition that represents the content you need.
Can I save Selenium’s screenshot as image bytes instead of a file?
Yes. The Python WebDriver API provides get_screenshot_as_png() for binary PNG data.
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