Best method for transparent gif

Discussion in 'Photoshop Tutorials' started by No, Jan 6, 2005.

  1. No

    No Guest

    I want to learn the best way to make transparent gifs in photoshop, I
    would perfer seeing a tutorial rather than someone giving me steps in a
    post.

    What I am trying to do is create transparent gifs that can be placed
    on web pages with all kinds of backgrounds and still have nice crisp edges.
    can anyone direct me to some good tutorials?

    Thanks in advance
     
    No, Jan 6, 2005
    #1
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  2. No

    ZONED! Guest

    Perhaps something here:
    http://groups-beta.google.com/group...bject=transparent gif&lr=lang_en&num=50&hl=en
    or here:
    http://groups-beta.google.com/group...aphics.apps.photoshop&lr=lang_en&num=50&hl=en
     
    ZONED!, Jan 6, 2005
    #2
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  3. No

    jjs Guest

    Go to the PS help menu and take "export as transparent image".
     
    jjs, Jan 6, 2005
    #3
  4. No

    No Guest

    jjs,
    Nothing personal but everytime I ask for a tutorial you reply back with look
    in Help.... I know how to look in help ok? DO you know what a tutorial
    is???
     
    No, Jan 6, 2005
    #4
  5. No

    Tacit Guest

    What I am trying to do is create transparent gifs that can be placed
    Ha! Wouldn't we all.

    Unfortunately, the GIF file format specification forbids that. It is not
    possible within the GIF format.

    GIF transparency is "all or nothing"--a pixel is completely transparent or
    completely opaque. Partially translucent pixels are not permitted by the GIF
    specification.

    Because of that, you can make a GIF with hard, aliased edges that will work on
    all Web backgrounds, or you can make a GIF with nice smooth edges but that only
    works on one color background. You can not make a nice, smooth GIF that works
    on any background.

    The nice, smooth, atialiased edge requies placing pixels along the edge which
    are translucent--something GIF does not permit. So you fake it, by using a
    "matte color" to create an edge that's the color of the Web background you want
    to use. if you don't use a matte, your edge is hard and jagged, not
    anti-aliased.
    The tutorial that does what you want starts like this:

    Step 1: Change the GIF format specification so that it allows antialiased
    transparency.
     
    Tacit, Jan 6, 2005
    #5
  6. No

    Eric Gill Guest

    (Tacit) wrote in m03.aol.com:
    I've been hoping for Microsoft to screw up and accidentally properly
    implement PNG Alpha in IE.

    If I'd held my breath, I'd be dead by now, of course.
     
    Eric Gill, Jan 6, 2005
    #6
  7. No

    Tacit Guest

    I've been hoping for Microsoft to screw up and accidentally properly
    Wouldn't that be nice? It'd make PNG images wth 8-bit transparency useful for
    once. unfortunately, since Explorer is the lowest common denominator of Web
    browsers and since Explorer mucks up alpha transparency on PNGs, we're left
    dealing with the insufficiencies of GIF transparency.
     
    Tacit, Jan 6, 2005
    #7
  8. No

    jjs Guest

    Hey, look at it before you jump. It holds your hand, talks sweet to you and
    blows you a kiss when it's done.
     
    jjs, Jan 6, 2005
    #8
  9. No

    Hecate Guest


    There is hope. Firefox seems to be gaining ground (figures up to end
    October) IE share has gone from 97.1% to 92.7% and Firefox has taken a
    good chunk of that. Since October, v1 has been released and a *lot*
    of magazines have been recommending it (even my daily newspaper has in
    it's weekly computing column). So, maybe we'll see a change. Also,
    like Eric I've been hoping and I'm wondering if they'll include it in
    the Longhorn build.
     
    Hecate, Jan 7, 2005
    #9
  10. No

    Eric Gill Guest

    God, I really hope so. I'm sick of cleaning up worm-ridden machines.

    90% of them are from IE's wide-open door, welcome mat, neon sign and
    searchlights spelling "Please Screw This Computer".

    I swear - the only way Microsoft could do any worse is by chauferring the
    thieves to your door.
    Whee - there's something else not to hold your breath on.

    I have been tinkering with a workaround:

    http://www.koivi.com/ie-png-transparency/

    It's not exactly the same, but it's a lot better. Just a pain.
     
    Eric Gill, Jan 7, 2005
    #10
  11. No

    Hecate Guest

    Interesting. It would be nice if png was usable. The code isn't so
    bad if you're using something like Dreamweaver as you can save code
    snippets and so forth, but I still wish we didn't have to do something
    like that.
     
    Hecate, Jan 8, 2005
    #11
  12. Psssst. One word: Macintosh....... shhhhhh.
     
    John McWilliams, Jan 8, 2005
    #12
  13. No

    Hecate Guest

    Psst -a few words - only 5% of the global market....
     
    Hecate, Jan 9, 2005
    #13
  14. No

    Eric Gill Guest

    Working on a Macintosh will not suddenly allow all the viewers of the
    resulting site able to view PNG alpha in Internet Explorer.

    John, you may love your Mac, but that was just stupid.
     
    Eric Gill, Jan 9, 2005
    #14
  15. Of course not. Absurd - no, preposterous!- deduction; one I did not mean
    to make.
    Re-read this, concentrating on your first three little paragraphs. Yes,
    I should have trimmed everything after, "I have been tinkering...."
     
    John McWilliams, Jan 9, 2005
    #15
  16. Psst. So what? If I work with a Macintosh, does it really matter how
    many other people do at that same moment?
     
    Johan W. Elzenga, Jan 9, 2005
    #16
  17. No

    Eric Gill Guest

    Yes. Okay. That makes more sense.

    Change my reply to, "Mozilla."

    The longer reply is: my experience is that it's easier to talk my clients
    who use PCs into using Mozilla software and a router I've configured than
    switching to Macs, and that eliminates the problem.
     
    Eric Gill, Jan 9, 2005
    #17
  18. No

    Hecate Guest

    Not at all. I just get irritated by the "use a Mac" people when
    someone is asking for/discussing use of a PC. It's both inappropriate
    and a pain in the ass.
     
    Hecate, Jan 10, 2005
    #18
  19. I'm a Mac user, but I agree fully. However, if you respond like that you
    only risk starting a flame war. That's an even bigger pain. Just use
    your kill file for people like that.
     
    Johan W. Elzenga, Jan 10, 2005
    #19
  20. No

    Tacit Guest

    Not at all. I just get irritated by the "use a Mac" people when
    It's perfectly appropriate to a discussion such as "I am tired of dealing with
    worms and viruses." It's not, however, relevant to the issue of whether PNG
    alpha transparency is viable for Web use.
     
    Tacit, Jan 10, 2005
    #20
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