Gromit-MPX enables you to draw anywhere on the Linux desktop screen

Have you ever wished to freeze the Linux desktop screen and draw anything on it? Or, you might want to point out or highlight a part of your application or desktop to others when screen recording on Linux?

If so, Gromit-MPX is an easy-to-use screen annotation tool that you can use immediately.

Use Gromit-MPX to annotate on the screen

Gromit MPX

Gromit MPX (GRTop view Øversion MIMiscellaneous THinge- MediumultimatePwinter predecessorTension) is a free open source tool that allows you to make comments anywhere on the screen. The best thing about this application is that it does not restrict you from using it on only one desktop environment.

In contrast, Gromit-MPX has nothing to do with the desktop, and supports all Unix-based desktop environments, such as GNOME, KDE, and Xfce, in both X11 and Wayland window sessions.

Even for X11, if you have a second pair of input devices and want to use it instead of the first pair of input devices to annotate, the app also allows you to set the pointer and multi-pointer of the dedicated annotation device at the same time.

Another thing that makes Gromit-MPX completely different from other available annotation tools is its easy-to-use and non-intrusive philosophy.

What I mean is that once the application is installed and activated, you can use its taskbar icon (if your desktop has a system taskbar) or the six default key bindings to operate it. Gromit-MPX will not draw or paste any of its own UI widgets to provide useful options.

Tray icon optionsTray icon options

you can use it F9 Hot keys without interrupting your normal workflow. Moreover, whether you want to undo/redo the last drawing or completely clear the screen, you are only one click away from performing the operation: F8 Undo the last stroke (maximum 4 strokes), then SHIFT-F9 Clear the screen.

gromit mpx available commandsGromit-MPX available commands

Of course, you can also completely freely change the default configuration for key bindings and drawing tools.

I think the one thing that Gromit-MPX lacks is that various shapes can be used, such as rectangles, circles, and straight lines. Currently, you can only use freehand drawing to annotate desktop screens, and you may find it difficult to handle at first.

Gromit mpx function to be releasedUpcoming features in Gromit-MPX

However, the good news is that the line function in Gromit-MPX is being developed, and it is already planned to be used in the next version 1.5.

Install Gromit-MPX on Ubuntu and other Linux distributions

If you are using a Debian-based distribution (such as Ubuntu), Gromit-MPX is already available in the repository. You only need to run a command to install it.

sudo apt install gromit-mpx

However, for older OS versions, you may not be able to get the latest version 1.4 of the application and miss some important features.If you want to use the current latest version 1.4, you need to download from Flathub database Use Flatpak, a universal package manager.

If you haven’t set up Flatpak on your system, check out the complete Flatpak guide. After enabling Flatpak support, you can run the following command to install Gromit-MPX.

flatpak install flathub net.christianbeier.Gromit-MPX

Install gromit mpx using FlatpakInstall Gromit-MPX using Flatpak

If you don’t want the Flatpak package or your system does not support it, you can also download it Source code, Compile and build the application by yourself.

How to change the key binding and tool color in Gromit-MPX?

By default, Gromit-MPX uses red as a tool. But it also provides other colors, you can use the hotkey to switch to other colors.For example, once you open the drawing, you can press and hold SHIFT Used to change the tool color to blue, and CONTROL Is yellow.

If you want to use the default color (except red or other colors) as a different hotkey, you can gromit-mpx.cfg file.

Change tool colorChange tool color

You can find the configuration file in the directory listed in the $XDG_CONFIG_HOME variable (usually, if the Flatpak package is installed, it is usually ~/.config or ~/.var/app/net.christianbeier.Gromit-MPX/config/ ) Or /etc/gromit-mpx/ (if you have a Debian package).

To change the default hotkey or undo key, you need to add a new entry with a custom value in the same configuration file.

HOTKEY="F9"
UNDOKEY="F8"

How to automatically start Gromit-MPX at startup?

If you use Gromit-MPX on a regular basis, you may need to mark it as a startup application instead of manually opening it every time you boot the system.

Therefore, to automatically start Gromit-MPX, you can use the GUI to launch the application utility, or you can manually add a desktop entry with the following content: ~/.config/autostart/gromit-mpx.desktop.

[Desktop Entry]
Type=Application
Exec=gromit-mpx

If you use the Flatpak kit, you need to replace it Exec=gromit-mpx with Exec=flatpak run net.christianbeier.Gromit-MPX.

Hope you like this beautiful tool. If you have tried, don’t forget to share your experience.

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