Selenium Webdriver only takes a screenshot

Question

I only need screenshots of the current viewport, especially regarding the scroll position. Basically what the current Chrome driver does.

From what I read, it seems that this should be completely possible, but for some reason, screenshot teams always strive to take a full screenshot. In fact, the IE driver takes a few snapshots in the viewport and then stitches them together.

I use the Ruby web editor, and I still can’t see the screenshot only in the viewport. Is it possible?

Answer 1

When working with WebDriver, there are two competing definitions for screenshot. The first is the definition used by the open source project, where the screenshot is defined as an image of the entire DOM of the loaded page. In this case, both the IE driver and the Firefox driver do the right thing, defined by the project since 2010. The implementation of Chrome WebDriver is incorrect when returning an image of only the visible view port.

The W3C WebDriver specification , on the other hand, defines screenshots of only the current viewing port. This runs counter to the current open source project driver implementations (IE and Firefox) and is expected to change in the future. Once the specification reaches the “Candidate Recommendation” status, these drivers are likely to be updated.

On the side, it should be noted that the IE driver does not in any way use the scroll and line method to create screenshots. It resizes the browser window large enough to display the entire DOM, as calculated at the time the screenshot was requested, and take a picture. Please note that when creating these screenshots with the full DOM, problems arise with IE 10 and 11, depending on the bit version of your operating system and the IEDriverServer executable file that you are using.

Currently, you will need to use an external tool for WebDriver to get screenshots only for the portfolio for IE and Firefox.

Answer 2

This is a frequently changing problem.

AFAIK now Chrome and IEDriver take only screenshots only in the viewing window, while FFDriver captures a full-screen shot (FF will change this in the future). See also my answer to this question .