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Image file-size
Brian Tozer

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May 26, 2011 - 1:48 pm
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In the ongoing basic/beginner Thursday morning series, which is discussing NextGen image gallery, I hope that the subject of image file-size as related to compression, and the objective/desirability of optimizing the tradeoff between file-size and image quality related to image display size, will be covered.

Preferably using a free application that can perform batch processing on a group of images.

There are several such applications available.

Of course the amount, and type, of compression is a subjective decision, but I would consider that 50 Kb should be plenty for a 640 x 480 .jpg image for display on a monitor/web-page.

Rick Anderson
Desert Hot Springs, CA
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May 26, 2011 - 5:10 pm
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It would save me some time if you had a suggestion for a source of a free batch image resizing program. doesn't have that functionality.  It is certainly possible for me to teach this in Photoshop, but that doesn't meet your free standard.

Brian Tozer

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May 26, 2011 - 6:29 pm
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I would recommend IrfanView.

It is a superb graphics display program with some image editing capabilities.

This includes batch processing.

One of several video tutorials is at

Incidentally the home site also offers a plugin additions package which enhance it's capabilities.

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