LCD Tester is a utility to display LCD monitor test patterns. It may be useful for adjusting the pixel clock frequency and phase on LCD monitors when using analog inputs, and for finding pixels that are stuck on or off.

Upon startup, LCD tester will fill the screen with solid red. Pressing keys on the keyboard will change the pattern:

Change foreground color:
r red
g green
b blue
w white
k black
Change pattern:
s solid fill
h horizontal lines
v vertical lines
c crosshatch
d dots
a white vertical lines with two pixel pitch

Line position/spacing
arrows move lines in arrow direction
plus increase spacing between lines
minus increase spacing between lines
0..9 select predefined line spacings

Other:
/ or ? toggle display of help message
q or escape exit program