Re: Gimp question - how to make a white(ish) background transparent?

[Steve Bell]

I'm sure you know this already, but on the off-chance you don't, you 
have to save as a transparent gif to get it to sit transparently over 
any colour in your web page.  You'll get the transparency options as you 
save as .gif.

So do what Michael said in Gimp to get a transparent background, then 
export to gif, and voila.

Forgive me if you already knew that part, and Michael had already 
answered your question!

Phill Coxon wrote:
Hi guys. 

Quick gimp question. 

I'm putting up a website with an image of my "signature" (no, not my
real signature). 

I've scanned the signature and have a nice image with a white
background. 

Now I want to convert the white background to transparent so that the
signature sits cleanly on whatever colour background the website happens
to be. 

So, two questions:
(1) Although the scanned background is pretty good, it's still made up
of various shades of white. 

How can I use gimp (or gimp-2.0) to select a colour range (pure white to
offwhite) and remap it pure white #ffffff ?
(2) Now that the background is a nice uniform white, how do I change
that to being transparent.  I'm sure this is easy, but I'm stuffed if I
can find an option in Gimp. 

Probably staring right at me somewhere. 

Thanks!