Hover the image and press E to edit it:
Keyboard shortcuts
Tools:
F
reehand
F
T
ext
T
E
l
lipse
L
L
i
ne
I
A
rrow
A
R
ectangle
R
S
election
S
Operations:
Copy (doesn't work yet)
Ctrl
+
C
Paste
Ctrl
+
V
Upload (Imgur)
Ctrl
+
U
Back
Ctrl
+
Z
Forward
Ctrl
+
Y
Disable tool
Esc
Work in 45° angles
hold
Ctrl
You will not be able to disable Text tool in Google chrome, because Escape key doesn't work there. Also, Ctrl+U combination doesn't seem to work in Chrome.
