A Screenshot can be stored in multiple file formats like Bitmap File, JPEG File, PNG File , etc. When a Screenshot is captured on a Windows Computer with Prt Scr or Alt + Prt Scr button on Keyboard, the Screenshot is stored in Bitmap File format. For sharing Screenshots by EMail or other File Sharing Methods, PNG File format is preferred file format as it gives the same quality of Image and occupies less space as compared to Bitmap File.
Look closely at the Size Column of the above Screenshot of Windows Explorer Window which displays the same Screenshot stored as a Bitmap File and then stored after being converted to PNG File format. The Size of the Bitmap File in the above screenshot is 543 KB, whereas the same Screenshot occupies 29 KB when stored as a PNG File.
The Above Screenshot displays the PNG Screenshot File selected in Windows Explorer. You can easily verify that the above displayed two files have same screenshot in them by looking at the thumbnail of the Screenshot. When storing a Screenshot as a File, you can select which file format must be used to store the Screenshot file as displayed in the Screenshot below.
The above Screenshot displays File Format selection Screen of Microsoft Paint Application. In case you do have different Image Editor to view and save Screenshot Files, you can always click on File – > Save As Menu to view the available File Formats to save Screenshot File. Whether you wish to send Screenshot by EMail or upload it to some website, PNG File Format is the best File Format for Screenshots which handles text and other graphics in best possible way.
In case you have already captured multiple Screenshots and you wish to convert them to different file format, you can use an Image Converter which can easily and quickly convert Screenshot Files(s) from one format to another. As Screenshots are Image Files, you can also use an Image Resizer to Re-size multiple screenshots to different width and height.