Head First HTML with CSS

choosing between gif and jpeg
What format should we use?
You already know that we have a couple of options in deciding how to save
this image: we could use JPEG or GIF. This logo uses only three colors,
text, and some geometric shapes. From what you’ve learned about the two
formats, you’re probably leaning towards GIF (good choice!).
So, go ahead and choose GIF in the format drop down, and you’ll see we
have a few more options. Let’s take a look...
206 Chapter 5
Remember, use this
pulldown menu to set the
format. We’re going to
set the format to GIF to
save the logo.
Try unchecking the Transparency checkbox:
you’ll see the GIF preview at the bottom
change to a white background.
Here’s where Photoshop
Elements shows you the
number of colors being
used to save the GIF.
It’s already set to the
maximum, 256. We’ll
leave it there.
When you set the
format to GIF, this
Transparency checkbox
appears. By default,
it’s checked. Do we
want a transparent
background?
Also note the
Matte option.
This is related to
transparency, as
you’ll see in a sec.