Przechwytywanie obrazu z monitora

While you are working on the computer, you may need to save the image which is displayed on the monitor (as a single photo or video) in the memory of your computer. It is not as difficult as it seems, although in different operating systems (Windows, Linux, MacOS and others) you can do this in different ways. Due to the common use of the MS Windows system, we will focus on capturing the image in this operating system family.

The basic type of images that we may want to capture are static images, i.e. single „photos”. The mechanism of capturingcapturingcapturing static images (also called „screenshots”) is provided by the operating system itself, and the „Print Screen” key is used for that purpose. On some keyboards the description can be found in a short form of „PrtScr”. All you need to do is to press this key shortly and the system will save the imageimageimage of the entire screen (workspace) to the clipboard from which you can paste it into a graphic program or a text editor. Pressing the key and saving the image will not be signaled by any sound or any other form of message. Having a captured image in the clipboard it is sufficient to paste it into the graphic program by using the appropriate function (this function often appears under the keyboard shortcutkeyboard shortcutkeyboard shortcut „Ctrl + V”). The saved imageimageimage does not contain the mouse cursor, so we do not have to worry that the cursor will overshadow, for example, a fragment of the picture. We must remember that such picture will have the resolutionresolutionresolution identical with that displayed on our monitor. Thus, if we are going to display, for example, a photo or a map hoping to get a picture of high resolution, the quality of the picture will be exactly of the quality that our monitor provides.

If we want to capture only a fragment of the entire work screen, after pasting the screenshot into the graphic program which we use, we need to cut out this fragment we are interested in. If the current work window is the part we are interested in, then we can simplify the procedure by using the „Alt + Prtint Screen” shortcut, which will capture only the current window instead of the whole work area.

In the case of screenshots of websites, the most common problem is that the page is long and cannot fit the screen, so the screenshot will not cover the whole page. Producers of some browsers have noticed this problem and they have developed add‑ons that enable the user to capture whole pages, including very long ones. In the Chrome browser, you can install the „Full Page Screen Capture” add‑on which, by the „Alt + Shift + P” shortcut captures the whole page screenshot and displays it in the newly opened browser tab. We can save such a picture on the disk or copy it to the clipboard. However, this plugin will not work on pages with proprietary content. If you use Firefox, you can use the „FireShot” add‑on (you can also find it under the name „Full Web Page Screenshots”). In this case, you can use the shortcut „Shift + Ctrl + Y” to copy the window. Regardless of the browser add‑ons, you can use „Site Shoter” application. You can find it at nirsoft.net. This softwaresoftwaresoftware enables capturingcapturingcapturing a screenshot of any website (or page list) by saving its imageimageimage to disk. Unlike the above mentioned add‑ons, in this program it is possible to specify many parameters in the configuration, including the imageimageimage format and the degree of compression, as well as to use a differentdifferentdifferent browser window resolutionresolutionresolution than the one we actually use.

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Okno przeglądarki - zrzut ekranu zrobiony za pomocą Full Page Screen Capture. widoczna jest cała strona epodreczniki pl, nawet te elementy, które w widoku standardowym przeglądarki są niewidoczne i aby je zobaczyć trzeba przewinąć stronę. Oprogramowanie Full Page Screen Capture pozwala na umieszczenie za zrzucie ekranu zawartość całej strony bez względu na jej rozmiar. Na górze strony widoczny jest pasek, na którym znajduje się rysunek aparatu fotograficznego oraz napis: Full Page Screen Capture. Dalej po prawej stronie ikono grafiki przedstawiające: flagę, kosz na śmieci, prostokąt z napisem PDF z wchodzącą strzałką od góry, prostokąt z dwoma trójkątami na dole z wchodzącą strzałką od góry, zegar z jedną wskazówką, koło zębate.

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Ilustracja przedstawia logo systemu Windows, czworokąt podzielony na 4 części, przypominający okno. Po lewej stronie ilustracji znajdują się napisy: operating system: Windows oraz keyboard shortcut: PrtSC.

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Ilustracja przedstawia logo systemu Linux, siedzącego pingwina. Po lewej stronie ilustracji znajdują się napisy: operating system: Linux oraz keyboard shortcut: PrtSC.

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Ilustracja przedstawia logo systemu MacOS, grafikę w kształcie zbliżonym do prostokąta z zaznaczonymi kreską oczami, nosem i ustami. Pod twarzą jest napis Mac OS. Po lewej stronie ilustracji znajdują się napisy: operating system: Mac OS oraz keyboard shortcut: Shift + Cmd + 3.

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QUIZ Zdecyduj, które z 3 podanych zdań jest prawdziwe, a które fałszywe:To save a screenshot in the memory of the computer it is enough to use just one key.2. In all operating system you can use the same keyboard shortcuts to capture the image from the monitor.3. It is possible to capture the image from the monitor in a different system then Windows.

In other systems we capture images in the same way but using differentdifferentdifferent keyboard shortcuts. In Linux we press PrtSc or PrtSc + Ctrl to save the whole screen imageimageimage or Alt + PrtSc to save the image of the active windowactive windowactive window. In the Mac OS operating systemoperating systemoperating system the Shift + cmd + 3 shortcut is used to save the entire screen image or the Shift + cmd + 4 shortcut is used to keep the imageimageimage of the active window.

• To capture the imageimageimage from the monitor, appropriate keyboard shortcuts should be used.

• For Windows the PrtSc button should be used to save the entire screen image or Alt + PrtSc to save the image of the active window.

• In the Linux system, the screenshotscreenshotscreenshot is captured in the same way.

• DifferentdifferentDifferent abbreviations are used in the Mac OS operating systemoperating systemoperating system. These are Shift + cmd + 3 to save the whole screen imageimageimage or Shift + cmd + 4 to save the image of the active windowactive windowactive window.

• After capturingcapturingcapturing the image, it should be pasted into any raster graphics editor and saved in the memorymemorymemory of the computer.

Exercises

Glossary

Keywords

capturingcapturingcapturing

keyboard shortcutkeyboard shortcutkeyboard shortcut resolutionresolution

operating systemoperating systemoperating system

resolutionresolutionresolution

screenshotscreenshotscreenshot