Is it possible to implement long screenshot?

[Uno-count]

In my testing workflow, I often need to capture full-page screenshots to ensure that all elements on the page are correctly displayed and rendered. However, the default behavior of self.save_screenshot() captures only the visible portion of the page within the dimension of the screen.

[mdmintz]

Duplicate of #902 (comment)

If you run tests using --headless mode, you'll get the full page screenshot.
Otherwise they will be the same size as the browser window.

Also try examples/test_image_saving.py
It shows you how to take screenshots of specific sections of web pages.