...

View Full Version : whats up with png?



BroChris
11-19-2002, 02:06 PM
I'm just now noticing a lot of people using the png format. I thought it was not supported by many browsers and it has a larger file size, but then I saw this:

W3's info on png (http://www.w3.org/Graphics/PNG/)

Why aren't more people using this format? Are there any negative consequences? Positive?

jkd
11-19-2002, 02:17 PM
Smaller images. Well supported.

Basically every web browser except Internet Explorer for Windows supports it well enough for use within webpages.

You can even hack around IE's crappy support with a filter too, but that can be inconvenient.

undyingfires
11-20-2002, 05:45 PM
Basically every web browser except Internet Explorer for Windows supports it well enough for use within webpages.

I guess I'm not quite clear on that one... But I have made web pages with PNG images and then used my IE to view that same page. It works. I've viewed that same page with IE 6 and lower. Anyhow, I'm going to read up on the link to those PNG pages you provided BroChris cause I'm not saying anyone is wrong on this one :o

Mind you, I've had friends from England tell me they couldn't see the PNG's on that same page but as to what OS or browser, didn't ask.

jkd
11-20-2002, 06:08 PM
IE/Win can view pngs without alpha or gamma. But it does not support the very useful gamma correction nor the alpha layer (which basically means translucency).

Motif Webs
11-20-2002, 06:12 PM
See http://www.libpng.org/pub/png/pngapbr.html (Scroll down to read more about support in IE or for a summary of browser support of png see http://www.libpng.org/pub/png/pngstatus.html#browsers

Neil

undyingfires
11-20-2002, 07:24 PM
wonderful helpful stuff.. even though I never started this thread :)

Borgtex
11-20-2002, 07:36 PM
A perfect solution to show png's alpha transparency in IE:

http://webfx.eae.net/dhtml/pngbehavior/pngbehavior.html

jkd
11-20-2002, 09:08 PM
Originally posted by Borgtex
A perfect solution to show png's alpha transparency in IE:

http://webfx.eae.net/dhtml/pngbehavior/pngbehavior.html

Notice how I mentioned in my original post a hack with a filter?

That is it, and it hardly does the job.

Yay, I can now use png images inside <img/>, but more often than not I use them as background-image: url(myimage.png); which cannot be accomplished via this method.

kwhubby
11-21-2002, 07:42 AM
[QUOTE]Originally posted by jkd
Smaller images. Well supported.

Basically every web browser [b]except Internet Explorer for Windows supports it well enough for use within webpages.
[QUOTE]

what are you talking about, I use it all the time, and it works on even windows 98 with 4.0 ie as a browser

Wichetael
11-21-2002, 09:37 AM
Yes, it works in IE, but not with the full 32 bit RGBA support, which is essentially why you'd want to use PNG's in the first place...

kwhubby
11-22-2002, 07:11 AM
oh, I like png because of its compresion methods, it dose not error diffusion as much as png dose, so its much clearer.

whammy
11-23-2002, 12:56 AM
:confused: You mean .gif? :)

Nightfire
11-23-2002, 01:12 AM
.png works with IE? Funny, doesn't work with IE5 well.... I tried with a site with a lot of png's, only saw one png image show....No matter what I did

kwhubby
11-23-2002, 08:06 AM
no I dont mean gif ,gif is not as capable with colors, although with more advanced programs you can get 255 colors but jpeg tiff and png are capable of many more colors. I prefer png because of its compression that uses less error and color diffusion
. But now that I learned that there is an alpha channel for transparency, and figured out how to use it, its even better!

zoobie
12-01-2002, 08:55 PM
I've noticed a button I'm working on:

as a jpeg = 2180
as a gif = 1763
as a png = 1227

I need to use it in a css class via background: background-image:url(mypic.png); with text on top in a button.

I see it with a transparent background ok in IE6 but haven't tried calling on it in a css class yet... :eek:

Mhtml
12-01-2002, 10:39 PM
I love my png images on a mac...I'm quite the graphics artist when viewed with an apple but internet explorer makes them appear as good as a gif.. I never expected that until was at school one day and decided to check my site stats and my big globe image looked perfect with no little steps in the circular gradient or in the transparency.



EZ Archive Ads Plugin for vBulletin Copyright 2006 Computer Help Forum