Thread View: adobe.photoshop.scripting
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Started by David Delahay
Mon, 30 Mar 2009 14:39
Batch reduce images to 1mb
Author: David Delahay
Date: Mon, 30 Mar 2009 14:39
Date: Mon, 30 Mar 2009 14:39
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Is it possible to run a batch process to reduce a large number of image files to 1mb? The images are all currently completely different size so file size could range from 3mb to 90mb. All images will be jpeg format so a file conversion doesn't need to be processed. Many thanks
Re: Batch reduce images to 1mb
Author: christoph_pfaffenbichler
Date: Tue, 31 Mar 2009 14:48
Date: Tue, 31 Mar 2009 14:48
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As far as I know the resulting file-size with both lossy and loss-free image-compressions depends on the content, so aiming a jpgï¿œs file-size at 1MB might be a rather vague intention and consequently a bit difficult to Script. Though maybe someone else has actual experience with such an operation?
Re: Batch reduce images to 1mb
Author: xbytor
Date: Tue, 31 Mar 2009 16:29
Date: Tue, 31 Mar 2009 16:29
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> Though maybe someone else has actual experience with such an operation? The only solution (that has been arrived at more than once) is to start off with a jpeg quality of 10 or 12, save the image and check the file size. If it's too big, reduce the quality and try again. Using Export For Web instead of Save As will typically result in a better quality-compression trade off, but there is no known way to specify the desired image size ahead of time. -X
Re: Batch reduce images to 1mb
Author: try67
Date: Tue, 31 Mar 2009 16:30
Date: Tue, 31 Mar 2009 16:30
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You can probably do it by saving the file at the highest quality, checking the size, and then reduce the quality by 1, save again, etc. [Edit: Damn you, xbytor! ;-) ]
Re: Batch reduce images to 1mb
Author: george_dingwall
Date: Wed, 01 Apr 2009 07:26
Date: Wed, 01 Apr 2009 07:26
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You might consider the commercial program called JpegSizer. This has an option to specifiy a file size when resizing, You can find a free trial of it here. <http://www.tangotools.com/jpegsizer/download.htm>
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