What format of image to use on website

Hi,

I have an image in 2 formats (.gif and .png)
The .gif is 4.56 KB
The .png is 8.29 KB

What is the best format to use for the website?

NetHosted Staff Joined: 22 Mar 2004 Posts: 7017

Assuming the image quality is identical (or close enough) then always use the lowest sized image.

Andrew

Posted: Sun Jul 25, 2010 3:51 pm Post subject:

To me they look the same.
So will use the .gif

Thanks Andrew

NetHosted Customer Joined: 23 Jun 2009 Posts: 37

You could of also gone for png if you wanted it for use with transparency, if someone was to link to it on their website for example (with your permission preferably) whereby they were to then use it in a transparent (see-through) way.

SarahP

Posted: Mon Jul 26, 2010 2:52 pm Post subject:

The main difference between pngs will do full colour (24 bit) images where as gifs will only do 256 different colours (8 bit). pngs are also generally smaller than gifs (unless the image size is small) so are generally the better format to use.

The smaller gif size in your image is likely to be either down to loss of image data (24 bits to 8 bits conversion) or to the loss of image header data (who made the file etc). If you converted the gif back into a png then I would suspect that the new png would be smaller than the original.

Both pngs and gifs do transparancy.

NetHosted Customer Joined: 29 Jan 2005 Posts: 382

but there's not a transparent gif fix for IE6?

NetHosted Customer Joined: 23 Feb 2009 Posts: 16

transparent gif's should work in IE6

transparent png files are not supported with older versions of IE, I'm not sure which though. It still displays the image, but usually gives it a grey background.

Posted: Mon Aug 09, 2010 4:46 pm Post subject:

Incorrect display of images in IE6 - what ever the format - should be left as punishment for the user for using IE6.....

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