Age
Moderators: BeligerAnt, petec, administrator
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Andrew_Hibberd
- Posts: 1134
- Joined: Tue Jan 20, 2004 12:00 am
- Location: London
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BeligerAnt
- Posts: 1872
- Joined: Wed May 15, 2002 12:00 am
- Location: Brighton
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When you save an image in JPG format, the image is compressed.
The compression algorithm is slightly lossy, so some degradation of the image takes place.
In your photo-editing program, you need to find out how to control the JPEG compression. For normal photo-editing work you need to set the compression to minimum to preserve the image quality. However, for images viewed on a PC monitor, you really don't need all that quality, and you can wind the compression up quite a long way before you see any difference. (If the picture looks speckly you've gone too far! Be sure not to overwrite the original image, as you can't undo the loss of quality!)
If you use GIF format (so you can have a transparent background) you will have to reduce the colour depth to 256 colours. However, it hardly ever shows unless you look *really* carefully. You may find you are using even less than 256 colours, in which case you can optimise the palette (which is stored in the GIF image) and save some more bytes.
Depending on the image, you may find GIF gives a smaller file than JPEG, or vice-versa.
BTW I use an old copy of Paintshop Pro for (almost) all my graphics stuff, it gives a lot of control over final file size by playing around with compression, palettes, etc.
Andy, I grabbed this pic of ICant(?) off of Oliver's site and got it down to 1.4k without any difficulty.
Mail me if you're still having problems.
The compression algorithm is slightly lossy, so some degradation of the image takes place.
In your photo-editing program, you need to find out how to control the JPEG compression. For normal photo-editing work you need to set the compression to minimum to preserve the image quality. However, for images viewed on a PC monitor, you really don't need all that quality, and you can wind the compression up quite a long way before you see any difference. (If the picture looks speckly you've gone too far! Be sure not to overwrite the original image, as you can't undo the loss of quality!)
If you use GIF format (so you can have a transparent background) you will have to reduce the colour depth to 256 colours. However, it hardly ever shows unless you look *really* carefully. You may find you are using even less than 256 colours, in which case you can optimise the palette (which is stored in the GIF image) and save some more bytes.
Depending on the image, you may find GIF gives a smaller file than JPEG, or vice-versa.
BTW I use an old copy of Paintshop Pro for (almost) all my graphics stuff, it gives a lot of control over final file size by playing around with compression, palettes, etc.
Andy, I grabbed this pic of ICant(?) off of Oliver's site and got it down to 1.4k without any difficulty.
Mail me if you're still having problems.
Gary, Team BeligerAnt
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Andrew_Hibberd
- Posts: 1134
- Joined: Tue Jan 20, 2004 12:00 am
- Location: London
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Craig_Anto3
- Posts: 617
- Joined: Sun Feb 17, 2002 12:00 am
- Location: Bristol
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Maybe a bit bigger, but this would look much cooler craig.
http://img.photobucket.com/albums/v370/Tak/tonym.gif
http://img.photobucket.com/albums/v370/Tak/tonym.gif
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BeligerAnt
- Posts: 1872
- Joined: Wed May 15, 2002 12:00 am
- Location: Brighton
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Remote-Controlled Dave
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- Joined: Sun Apr 03, 2005 5:30 pm
- Location: Antrim, Northern Ireland
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BeligerAnt
- Posts: 1872
- Joined: Wed May 15, 2002 12:00 am
- Location: Brighton
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