Graphics Programs Reference
In-Depth Information
A screen size of 800 pixels broken into quarters.
To determine how wide an on-screen image should be, break down the total number of screen pixels into sections. In-
stead of thinking about how many pixels wide an image should be, think about what percentage of the screen you
want the image to occupy. In other words, if you want the image to occupy half the screen for a 1024 × 768 monitor,
you would type
512
into the Width text field in the Pixel Dimension section of the Image Size dialog box. For one
quarter of the screen, type
356
, and so on. It is a different way of thinking, especially for those from the print design
environment. It should also be noted that a pixel is a pixel, no matter what the ppi resolution of your image is. So, 200
pixels in a 300 ppi image takes up the same amount of screen and disk space as 200 pixels in a 72 ppi image.
Changing your units of measurement
Before starting the web project, verify that your measurements are set in the pixel unit. Make that change
in your Photoshop Preferences.
1
Choose Edit > Preferences > Units & Rulers (Windows) or Photoshop > Preferences > Units & Rulers
(Mac OS). The Preferences dialog box appears, with Units & Rulers already selected.
2
From the Units section of the Preferences dialog box, choose Pixels from the Rulers drop-down menu.
Leave all the other settings at their default. Click OK.
You can also change your unit of measurement by pressing Ctrl+R (Windows) or Command+R
(Mac OS) to show your rulers, and then right-clicking the horizontal ruler at the top to choose
Pixels (or any other measurement from the context menu that appears).
Changing your unit of measurement right on the ruler.
Creating the web page
In this part of the lesson, you will open the start file and get right to work adding content, links, and slices.
