Web Design Forums

van pat · 26-06-2007, 03:55

I'm converting Jpg to gif (a logo) in photoshop (cs2 mac).
After save as, first you get a window about index colour saying
Palette: local (selective)
colors:256
forced: black and white
transparency is ticked on
Options -dither: none.
then I press ok and another window saying
Gif options- row order and normal is checked.
Is this ok for a 2 colour logo?

Limbo · 26-06-2007, 04:02

Yes - that'd be OK. But if you want better results save the GIF directly from the source vector.

van pat · 26-06-2007, 04:21

ok, I have gone back to original illustrator file, save for web, have changed it to gif, not png and the other options are set on:
lossy 0
selective colours 256
diffusion dither 100%
transparency is off so is matte
interlaced is off and web snap 0%

is this good?

steveb · 26-06-2007, 04:24

That's fine - in fact, you can probably get by with 64 or 32 colors too, since there are only two colors. The file size will be a bit smaller.

Limbo · 26-06-2007, 04:48

I sort of disagree with that steve - depends on the logo and the colours.

Gifs of only a few colours are such a tiny file size it seems pointless to remove any as it could weaken some of the depth - getting the best colour match you can will usually mean using 256 - for the best aliasing - and it'd only save you a few bytes anyway.

adpitch · 26-06-2007, 05:30

If it's a 2 colors logo - you may try to use less colors (16,32 or 64)

Dusteh · 26-06-2007, 06:32

I'm with Limbo, it all depends on the anti-aliasing, the less colours you use - the more blocky the transitions become.

steveb · 26-06-2007, 08:08

Just try a few examples using "Save for Web" in Photoshop. You'll be able to compare the effects of using more or fewer colors. I'm pretty certain you'll agree that there is no perceptible difference , when there are only two colors present in the logo, between using 64 or 256 colors. This isn't a matter of opinion. It's certifiable fact!

adpitch · 26-06-2007, 12:10

Quote:

Originally Posted by steveb

........I'm pretty certain you'll agree that there is no perceptible difference , when there are only two colors present in the logo, between using 64 or 256 colors. This isn't a matter of opinion. It's certifiable fact!

I totally agree with this statement!

weldo · 27-06-2007, 11:04

so, its just me that tends to go : save for web > gif > ok

without thinking about it (unless things look obviously wrong) ... ??

26-06-2007, 03:55	#1 (permalink)
van pat Registered User Join Date: Jun 2007 Posts: 3	converting jpg to gif I'm converting Jpg to gif (a logo) in photoshop (cs2 mac). After save as, first you get a window about index colour saying Palette: local (selective) colors:256 forced: black and white transparency is ticked on Options -dither: none. then I press ok and another window saying Gif options- row order and normal is checked. Is this ok for a 2 colour logo?

26-06-2007, 04:24	#4 (permalink)
steveb 389 ppm and rising Join Date: Aug 2005 Location: Järvenpää, Finland Posts: 4,030	That's fine - in fact, you can probably get by with 64 or 32 colors too, since there are only two colors. The file size will be a bit smaller. __________________ My free fonts www.utfi.net

26-06-2007, 05:30	#6 (permalink)
adpitch Senior Member Join Date: Oct 2006 Posts: 283	If it's a 2 colors logo - you may try to use less colors (16,32 or 64) __________________ Global Advertising Industry Links

26-06-2007, 06:32	#7 (permalink)
Dusteh Sir digby chicken caesar Join Date: Sep 2004 Posts: 3,996	I'm with Limbo, it all depends on the anti-aliasing, the less colours you use - the more blocky the transitions become. __________________ unconsolidated isoparms

26-06-2007, 08:08	#8 (permalink)
steveb 389 ppm and rising Join Date: Aug 2005 Location: Järvenpää, Finland Posts: 4,030	Just try a few examples using "Save for Web" in Photoshop. You'll be able to compare the effects of using more or fewer colors. I'm pretty certain you'll agree that there is no perceptible difference , when there are only two colors present in the logo, between using 64 or 256 colors. This isn't a matter of opinion. It's certifiable fact! __________________ My free fonts www.utfi.net

26-06-2007, 04:02	#2 (permalink)
Limbo On yer bike... Join Date: Feb 2005 Posts: 4,951	Yes - that'd be OK. But if you want better results save the GIF directly from the source vector.

26-06-2007, 04:21	#3 (permalink)
van pat Registered User Join Date: Jun 2007 Posts: 3	ok, I have gone back to original illustrator file, save for web, have changed it to gif, not png and the other options are set on: lossy 0 selective colours 256 diffusion dither 100% transparency is off so is matte interlaced is off and web snap 0% is this good?

26-06-2007, 04:48	#5 (permalink)
Limbo On yer bike... Join Date: Feb 2005 Posts: 4,951	I sort of disagree with that steve - depends on the logo and the colours. Gifs of only a few colours are such a tiny file size it seems pointless to remove any as it could weaken some of the depth - getting the best colour match you can will usually mean using 256 - for the best aliasing - and it'd only save you a few bytes anyway.

27-06-2007, 11:04	#10 (permalink)
weldo now with added beard Join Date: Mar 2004 Location: Liverpool Posts: 5,175	so, its just me that tends to go : save for web > gif > ok without thinking about it (unless things look obviously wrong) ... ?? __________________ fuck signatures

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