In Mac OS X version 10.14 Mojave, when taking a screenshot a thumbnail is displayed for a few seconds before the file is created. See Apple’s How to take a screenshot on your Mac Markup, share, and save for more details.
Unfortunately I don’t want this delay. I take a lot of screenshots (using
4) and typically want to upload the image without making any changes, making this delay frustrating. This is how I removed the delay.
First: Open the Screenshot Interface
5 to open the screenshot interface.
Second: Open the Options Menu
Options drop down.
Third: Remove the Floating Thumbnail
Show Floating Thumbnail option.
Now screenshots files will be created immediately and no thumbnail will be displayed.