use GD;

# create a new image
$im = new GD::Image( 100, 100 );

# allocate some colors
$white = $im->colorAllocate( 255, 255, 255 );
$black = $im->colorAllocate( 0,   0,   0 );
$red   = $im->colorAllocate( 255, 0,   0 );
$blue  = $im->colorAllocate( 0,   0,   255 );

# make the background transparent and interlaced
$im->transparent($white);
$im->interlaced('true');

# Put a black frame around the picture
$im->rectangle( 0, 0, 99, 99, $black );

# Draw a blue oval
$im->arc( 50, 50, 95, 75, 0, 360, $blue );

# And fill it with red
$im->fill( 50, 50, $red );

# make sure we are writing to a binary stream
binmode STDOUT;

# Convert the image to PNG and print it on standard output
print $im->jpeg;

##</code><code>##

[cmo@fedora ~]$ perl gdtest.pl > test.jpeg
Can't locate object method "jpeg" via package "GD::Image" at gdtest.pl line 29.