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Which To Use, Jpeg Or Png?


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4 replies to this topic

#1 MickinPlymouthUK

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Posted 01 October 2007 - 01:32 PM

Hi, I regularly post screenshots and photos in military strategy game forums, usually in JPEG format, but just recently I've notice PNG gives slightly sharper results, so shall I go on using that in future, or are there some drawbacks that i don't know about?
I'm PC-illiterate and can't understand why anybody should want to use JPEG if its not as good?
PS - And why is JPEG sometimes called JPG, are they the same?
I'm Win XP Home
Thanks

Edited by MickinPlymouthUK, 01 October 2007 - 01:33 PM.


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#2 Noot

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Posted 01 October 2007 - 10:22 PM

JPEG is JPG, there is no difference, it's just dependent on what programs use, I believe.

The reason jpg is used still is because of the compression. The file size is a lot smaller than a png file. Hence the reason the quality is better, although jpg can look really good, it just depends on how much it's compressed. Usually, jpg is used for photographs or images with gradients, as gifs are used for text and flat colored images such as vector illustrations.

Also, IE browsers with the exception of 7, I believe, don't accept png files (they do, but for an instance with transparency, the background will be slightly darker in appearance than if seen in FireFox.) But with the exception of that and the big file size, pngs are a good format. It's better at transparency than gifs, it doesn't leave the slight white outline. Like with all formats, there are pros and cons, you just have to decide on if it works for you or not.

I hope that helped. :thumbsup:

Edited by Noot, 01 October 2007 - 10:24 PM.

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#3 j0nath4n

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Posted 02 October 2007 - 03:17 AM

JPEG is mainly used for photographs,and PNG is for graphics art.

#4 stevealmighty

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Posted 03 October 2007 - 07:58 AM

I'm PC-illiterate and can't understand why anybody should want to use JPEG if its not as good?
PS - And why is JPEG sometimes called JPG, are they the same?


JPEG and JPG is similar to TIF and TIFF. Just a different way of abreviating them. JPG is extremely common and is now considered the standard by most people for pictures, which is why it is used so much, despite any quality loss. Most people when talking (writing) about a JPG will put the "." (period, or "dot" with out the quotes), like "I saved is as a .jpg". The good thing about JPGs are that you can up the quality of them and they'll look just as sharp as a TIFF, even when printed.

HERE's some good reading about .jpgs. It explains things well enough, but you'll see where it reinforces what the others have already posted! :thumbsup:
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#5 clockradio

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Posted 14 November 2007 - 08:17 PM

If you need the pictures to have transparancies then use PNG otherwise use JPEG




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