Some of the shortcut keys for Pixlr Express Android can be used without holding down the Control key. They can be very handy, so we recommend getting to know them if you use Pixlr a lot.

Shortcut Tool
A Adjustment
B Borders
C Crop
D Doodle
E Effect
G Splash
H Heal
K Darken
L Stylize
O Overlay
P Pixelate
R Blur
S Stickers
T Text
U Smooth
Y Sharpen
Shortcut Tool
CTRL B Brighten
CTRL D Double Exposure
CTRL E Auto Contrast
CTRL F Autofix
CTRL R Rotate
SHIFT W Close Image
CTRL Y Redo
CTRL Z Undo
CTRL S Save
CTRL '+' Zoom in image
CTRL '-' Zoom out image
'+' Sticker scale up
'-' Sticker scale down