[Spikeout]

Picture made by me


JPG Files can't handle Transparency, but it's compatible with most any programs/softwares/etc.


Gif File, but it's compatible with most any programs/softwares/etc.


BMP File, probably one of the best resolutions, but not compatible with a few stuff. Takes up too much space and can't handle transparency.


PNG File, one of the best resolutions, can handle transparency, but not compatible with a few programs/softwares/etc. Takes up least space.


edit: idk how to make png transparent lol

This post has been edited by Spikeout: 26 March 2006 - 04:05 PM

[Spikeout]

Working on the PNG

edit: png wont be transparent till 7.0 comes out of beta

This post has been edited by Spikeout: 26 March 2006 - 04:07 PM

[Slay Mantus]

how do u make anything transparent?

[Spikeout]

if u get gimp i can tell you lol

[Slay Mantus]

have it

[Bespetna]

Nice

[Ratty]

Working on the PNG

edit: png wont be transparent till 7.0 comes out of beta

PNG is transparent for Firefox

But yeah. They will be for IE when IE7 comes out. Which will still suck.

[Slay Mantus]

how do i make this transparent?

[Spikeout]

GIMP right? Go to Filter > Color > Color to Alpha > Click ok

Save as GIF file

[Slay Mantus]

thx!

[Bespetna]

how do i make this transparent?

Looks cool .

[Phieta]

More than you ever wanted to know about common image formats!

Note about "bits per channel" -- most images are stored in RGB format, meaning each pixel is made up of a red, a green, and a blue "channel." The more bits per channel, the greater range of colors can be produced. Some formats (PNG...) also support an "alpha" channel for transparency, and thus use a format called RGBA (red, green, blue, alpha). "Color depth" refers to the total bits per pixel -- 8 bits per channel times 3 channels (RGB) results in 24-bit color; with 4 channels (RBGA) we get 32-bit color.

Now... more stuff:

BMP
--No compression.
--Supports up to 8 bits per channel.
--No transparency.
--No animation.
--Don't use it unless you have to, due to the high file size.

GIF
--Lossless compression.
--Supports 8 bits per channel, but each image is limited to an indexed pallette of no more than 256 colors.
--One color on the pallette may be designated as transparent, but alpha channels are not supported.
--Supports animation.
--Probably the best format to use if you need neither a full pallette nor alpha channels.

JPEG
--Lossy compression, visually (and in some ways operationally) similar to that of MPEG video, resulting in blockiness and blurriness, especially at lower Quality levels.
--Supports 8 bits per channel.
--No transparency.
--No animation.
--Best for photographs if the lossy compression isn't an issue (for archival purposes, use PNG, TIFF, or another lossless format)

PNG
--Lossless compression.
--Supports indexed color similar to GIF; also supports up to 16 bits per channel for non-indexed grayscale and color images with or without alpha channels.
--Alpha channels are supported, allowing for "partial" transparency.
--Animation is supported by the MNG format, which is otherwise similar to PNG.
--If you don't mind GIF's limits, use it, as it's better-supported than PNG. (Internet Explorer, for instance, ignores alpha channels in PNG images.)

[Ratty]

Kinda sucky how images with alpha channels (png transparency mainly..) dont work in IE... So we're stuck with dodgy aliased/choppy edges

*hugs firefox*

[Spikeout]

Cool Phieta