> I'm not a CAD user, and I don't want to install one just to draw five lines and a circle.
I have installed LibreCAD years ago and used it 3 or 4 times to add measurements on a downloaded drawing. Installed it with just "pacman -S librecad" and enter. Takes just ~82.7 MB on the disk. No account, no background service, completely gratis. Never asked me for an update, because it is always updated with the rest of the system. For all the years it sits there, waiting for a moment to be needed.
While I do get the appeal of the ability to squeeze desktop program into a browser, especially when using someone else's computer, so thank you for the project, while I do not understand the level of push away desktop programs get sometimes.