An attempt to draw UML online with ProcessOn

Address https://www.processon.com/

ProcessOn is a graphic tool and social network for vertical disciplines, founded in June 2011 and launched in 2012. ProcessOn connects global experts, consultants, BPM vendors, IT solutions vendors, and a wide range of enterprise users, providing free, cloud-based process grooming, authoring collaboration tools, collaborative design with colleagues and customers, creating and editing files in real time, and enables timely merging and synchronization of changes, which means that cross-departmental process grooming, optimization, and validation can be done instantly. Focusing on providing value to the drawing staff, using the Internet and social technologies to subvert the way people comb the process, and thus enable business users to achieve higher efficiency and return than traditional models, and improve the process of creating flowcharts.

Shortcut keys
General
ALT + Alt-Drag the page with the mouse
CTRL Ctrl-click a graphic to add it to the selection drawing or remove it from the
CTRL + (+), CTRL + (-) zoom in, zoom out
Ctrl + A All selected
ESC unchecked and cancels the yourselves action
T Insert Text
I Insert Picture
L Insert Connection
When the graphic is selected
Arrow (←↑↓→) moves the selected graphic to the left, up, down, to the right
Ctrl + arrows (←↑↓→) nudge one pixel at a time
Ctrl + resize graphic size, and constrain proportions
Ctrl + Z Undo
Ctrl + Y Recovery
Ctrl + X Cut
Ctrl + C Copy
Ctrl + V Paste
Ctrl + D Multiplexing
Ctrl + Shift + B format brush
Delete, Backspace remove
Ctrl +] places the selected graphic on the top level
Ctrl + [places the selected graphic in the bottom
Ctrl + Shift +] Move the selected graphic up one level
Ctrl + Shift + [moves the selected graphic down one level
Ctrl + L Locks the selected graphic
Ctrl + Shift + L unlocks the selected graphic
Ctrl + G combination of selected graphics
Ctrl + Shift + G Ungroup the selected graphic
Edit Text
Space Edit Text
Ctrl + B Bold
Ctrl + I Italic
Ctrl + U Underline
Ctrl + Enter to save text edits

Advantages: With no delay collaboration features, easy to get started, online can be produced.

Cons: Cannot generate code online based on UML diagram

An attempt to draw UML online with ProcessOn