On Wed, 2006-11-15 at 12:44, Mike Causer wrote:
On Wed, 15 Nov 2006 10:33:51 +0000 "Andrew S. Townley" <atownley@...16...> wrote:
I actually did what you suggested, but I gave up after I discovered that I was really dealing with a PNG anyway (see earlier message) and that I couldn't figure out in under 20 min how to get the image converted from PNG to GIF and still keep the anti-aliasing so the text looked presentable.
Ah, that one's easy. Use "convert", part of the ImageMagick suite, eg 'convert example.png example.gif' on a command line. It definitely retains full transparency, although not partial transparency (which gif may not support anyway?), and doesn't mess with the text as far as I can tell.
Convert will do a lot of /very/ useful processing to all sorts of graphic formats, and can be used as a batch processor. It's worth reading the full list of possibilities here: http://www.imagemagick.org/script/command-line-processing.php
Yeah, I've been using convert for a long time, but normally for batch processing of images. I haven't used command line tools for setting transparency for years, though.
However, I did try it in addition to the GIMP, but I got exactly the same results--probably due to the "partial" transparency required for the anti-aliasing to work against an alpha-only background (white text, transparent background).
Thanks for the suggestions,
ast