Command modifier throughout. Task entry, navigation, priority assignment, and project switching all use Command in the browser.
Task entry and natural language. Adding tasks and using natural language scheduling ("tomorrow", "every Monday", "in 2 weeks") work the same in the web app as in the desktop app.
Priority assignment. Typing "p1" through "p4" inline works in the web app the same as on desktop.
Project navigation. Keyboard shortcuts for switching between Inbox, Today, Upcoming, and project views work in the web app.
No global quick add. The system-level global quick-add shortcut that opens a panel from any application is only available in the desktop app. In the web app, quick add is opened from within the Todoist browser tab.
Browser shortcut conflicts. A small number of Command combinations may be captured by the browser before Todoist sees them. The table above notes where this applies.