I know this was not possible before, but now with the following update:
https://developers.google.com/web/updates/2017/04/devtools-release-notes#screenshots
this seems to be possible using Chrome Dev Tools.
Is it possible now using Selenium in Java?
3 Answers
In Selenium 4, FirefoxDriver provides a getFullPageScreenshotAs method that handles vertical and horizontal scrolling, as well as fixed elements (e.g. navbars). ChromeDriver may implement this method in later releases.
System.setProperty("webdriver.gecko.driver", "path/to/geckodriver");
final FirefoxOptions options = new FirefoxOptions();
// set options...
final FirefoxDriver driver = new FirefoxDriver(options);
driver.get("https://stackoverflow.com/");
File fullScreenshotFile = driver.getFullPageScreenshotAs(OutputType.FILE);
// File will be deleted once the JVM exits, so you should copy it
For ChromeDriver, the selenium-shutterbug library can be used.
Shutterbug.shootPage(driver, Capture.FULL, true).save();
// Take screenshot of the whole page using Chrome DevTools
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