Download Flameshot and install it in your system. It is a cross-platform, open source screenshot application. It is compatible with GNU/Linux and MacOS X. The first step is to install it on your computer. You can do so through the app store or through the Mac App Store. You can download Flameshot in a variety of forms. The first is a portable version. This type of file is only suitable for Mac OS X systems.
The next step is to open the application. After installing the application, you must run it to access the main interface. This will open the Help window. You can select a region to capture from the screen. Once you have selected a location, you can click the "Capture" button to start capturing. To customize the look of the screenshot, click on the "Color Picker" icon in the toolbar. You can also change the opacity of the area outside of the capture selection window. Then, you can use the keyboard shortcuts to control the program. The Button Selection menu lets you select whether to show or hide buttons in the screen capture window. To select a button, you need to check the checkbox.
When you are ready to begin taking screenshots, you can use Flameshot. This app is easy to install, and you can access it in the Applications menu or system tray. Its main window contains four tabs that allow you to customize the application's interface. These tabs let you customize different aspects of the app. Once you have selected a screenshot, you can annotate it and upload it to the cloud. It also saves your screenshots in PNG format.