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Ricesnaps
06-08-2007, 10:05 AM
This might be a really easy one, but I'm feeling a bit blonde!

How do you reduce the file size of an image without reducing the physical size or quality. I want to use a file on my web site which is currently about 3Mb, but want to keep it's size and quality. 3Mb is obviously WAY to big for the web!

Thanks
Marc J
06-08-2007, 10:27 AM
Reducing filesize is always a trade-off with quality unfotunately.

Convert it to JPG if it isn't already, and for the least quality reduction put the slider to 12 or 100%. You should get away with 8 or 70% before you really start to notice any drop in quality, though, and the filesize will be significantly less.
Ricesnaps
06-08-2007, 10:29 AM
Reducing filesize is always a trade-off with quality unfotunately.

Convert it to JPG if it isn't already, and for the least quality reduction put the slider to 12 or 100%. You should get away with 8 or 70% before you really start to notice any drop in quality, though, and the filesize will be significantly less.

What do the 8 and 12 number refer to?

I'll try a reduction to 70% in PSP if I can later. Is .JPG the best for quality vs size? What would the largest size you would want for a web graphic?
Shaun
06-08-2007, 10:33 AM
Do you have Photoshop?. If you do, open the file in photoshop....
Choose File > then select "Save for web" from the drop down menu. Save it at about 65% quality (there won't be any noticable difference, well not much). That'll dramatically reduce the filesize for you.

If you don't have photoshop, send the file on over to me and I'll alter it for you. mdd[at]elitedj.co.uk

*edit. You guys beat me to it.
Marc J
06-08-2007, 10:45 AM
What do the 8 and 12 number refer to?

I'll try a reduction to 70% in PSP if I can later. Is .JPG the best for quality vs size? What would the largest size you would want for a web graphic?

Depending on the application you use, some might use a 1-12 scale, others a percentage.

An 8, or around 70%, is when the quality noticeably drops (imho).

The largest you'd want for a web graphic is 800 x 600, that's probably big enough to show anything you want. Screen graphics are usually 72dpi but that doesn't really matter as DPI only really comes into it if you intend to print it and have a "physical" size. 800 x 600 is what you need :)