Full page screenshot in Selenium Python - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a full page screenshot in web testing?

A full page screenshot captures the entire webpage from top to bottom, including parts not visible on the screen without scrolling.

beginner

Why is a full page screenshot useful in testing?

It helps verify the complete layout and content of a webpage, catching visual bugs that appear outside the visible screen area.

beginner

Which Selenium Python method is commonly used to take a screenshot?

The method is driver.save_screenshot('filename.png'), but it captures only the visible part of the page by default.

intermediate

How can you capture a full page screenshot using Selenium in Python?

You can use the Chrome DevTools Protocol (CDP) commands via Selenium to capture full page screenshots or use third-party libraries that stitch multiple screenshots.

intermediate

What is a common challenge when taking full page screenshots with Selenium?

Selenium's default screenshot captures only the visible viewport, so capturing the entire page requires extra steps like scrolling or using browser-specific commands.

What does a full page screenshot capture?

A Only the visible part of the webpage

B Only the footer section

C Only the header section

D The entire webpage including off-screen parts

A full page screenshot captures the entire webpage, including parts not visible without scrolling.

Which Selenium Python method captures a screenshot of the visible page?

A driver.save_screenshot('file.png')

B driver.full_screenshot()

C driver.get_screenshot_as_base64()

D driver.capture_full_page()

driver.save_screenshot('file.png') captures the visible part of the page as an image file.

What extra step is often needed to capture a full page screenshot with Selenium?

A Using driver.close()

B Clearing browser cache

C Scrolling and stitching multiple screenshots

D Maximizing the browser window

Because Selenium captures only the visible viewport, scrolling and stitching screenshots is a common method to get the full page.

Which browser feature can Selenium use to capture full page screenshots more easily?

A Chrome DevTools Protocol (CDP)

B Browser history

C Cookies management

D Incognito mode

Chrome DevTools Protocol allows commands to capture full page screenshots directly.

Why might a full page screenshot be better than a visible viewport screenshot in testing?

A It loads faster

B It shows all page content, catching hidden bugs

C It uses less memory

D It requires no code

Full page screenshots show all content, helping find bugs outside the visible area.

Explain how to capture a full page screenshot using Selenium in Python.

Think about how Selenium normally captures screenshots and what extra steps are needed for full page.

Why is capturing a full page screenshot important in web testing?

Consider what might be missed if only the visible part is captured.