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Old 05-01-2004, 23:10   #18
Graham
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Re: Reducing image file size?

Quote:
Originally Posted by glentoran
if you have jpegs to big to email they must be huge i would go with the resizing option, or how about winzip? would that reduce them?
Trying to Zip a compressed file format like jpg can actually *increase* the size of the file!

Generally, if an image is only to be viewed on a monitor it's not necessary to have the information in the image that you'd need to print it out as a photo.

For instance to print a photo at a reasonable quality you'd have to have a resolution of at least 300 pixels per inch, but to view it on a monitor only requires 72 pixels per inch.

If you re-size the image down to around 600 pixels maximum dimension it will still be perfectly clear when someone else is looking at it on their monitor and if you save it with a jpg compression set at level 4 (in Photoshop use the "save as" option to set the compression) you can reduce an image from eg around 3 megabytes to less than 100 kilobytes!
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