Больше себе на заметку чем вам, но вдруг кто-то не в курсе 🙂
И так, что бы сделать скриншот в Firefox необходимо открыть нужную страницу, далее нажимаем комбинацию клавиш Ctrl + Shift + K для открытия Веб консоли.

И вводим команду
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:screenshot |
для снимка экрана видимой области сайта, для скриншота всей страницы вводим:
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:screenshot --fullpage |

Полное описание возможных команд:
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--clipboard Copies the image to your OS clipboard for pasting into other programs. Prevents saving to a file unless you use the --file option to force file-writing. --delay The time in seconds to wait before taking the screenshot; handy if you want to pop open a menu or invoke a hover state for the screenshot. You can use any number, not just integers. --dpr The Device Pixel Ratio (DPR) of the captured image. Values above 1 yield “zoomed-in” images; values below 1 create “zoomed-out“ results. See the original article for more details. --fullpage Captures the entire page, not just the portion of the page visible in the browser’s viewport. For unusually long (or wide) pages, this can cause problems like crashing, not capturing all of the page, or just failing to capture anything at all. --selector Accepts a CSS selector and captures only that element and its descendants. --file When true, forces writing of the captured image to a file, even if --clipboard is also being used. Setting this to false doesn’t seem to have any effect. --filename Allows you to set a filename rather than accept the default. Explicitly saying --filename seems to be optional; I find that writing simply :screenshot test yields a file called test.png, without the need to write :screenshot --filename test. YFFMV. |
Приятной вам работы 🙂