Examples, using a 6.5 x 4.5 inch color postcard from Aegina:

1) A little image, a so-called thumbnail:
scanned at True Color RGB, reflective, 100 dpi, 10% -- file size 2 K
Click the thumbnail to see the same image large size. Then click X to return here.
(The code in Image Properties, Link is pcard100.jpg -- the name of the large size image.)

10 %

2) A slightly bigger image:
scanned at True Color RGB, reflective, 100 dpi, 20% -- file size 6 K
 


3) A medium image, a little less than one fourth of the screen if the monitor is at 640 x 480:
scanned at True Color RGB, reflective, 100 dpi, 50% -- file size 26 K

4) A big image, filling most of the screen if the display setting is VGA (640 x 480):
scanned at True Color RGB, reflective, 100 dpi, 100% -- file size 87 K

100 %