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Jpeg format in Photoshop
Old 03-06-2007, 02:17 PM   #1 (permalink)
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If I have to save a photo as a jpeg I notice their are 3 options: Baseline standard, Baseline optimized, and progressive. I've always used standard but wondering if one is better than another.
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Re: Jpeg format in Photoshop
Old 03-06-2007, 07:46 PM   #2 (permalink)
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Quote:
Originally Posted by Kevin@rsp View Post
If I have to save a photo as a jpeg I notice their are 3 options: Baseline standard, Baseline optimized, and progressive. I've always used standard but wondering if one is better than another.

Select Baseline ("Standard") to use a format recognized by most Web browsers, Baseline Optimized for optimized color and a slightly smaller file size, or Progressive to display a series of increasingly detailed scans (you specify how many) as the image downloads. Baseline Optimized and Progressive JPEG images are not supported by all Web browsers.

Mike
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Re: Jpeg format in Photoshop
Old 03-06-2007, 08:07 PM   #3 (permalink)
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That answers it. Thank you!
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Re: Jpeg format in Photoshop
Old 03-06-2007, 10:03 PM   #4 (permalink)
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Quote:
Originally Posted by Kevin@rsp View Post
If I have to save a photo as a jpeg I notice their are 3 options: Baseline standard, Baseline optimized, and progressive. I've always used standard but wondering if one is better than another.
There are lots of technical answers, but the real world answer is that the Baseline standard method will open in virtually all products and browsers, but you can have problems with the other two. So its best to stick with the baseline standard. The progressive mode is interesting because on some browsers the photo will be loaded a bit at a time. You see a lower rez image appear and then it will get better and better. That is assuming the browser can handle progressive JPG. The baseline optimized will give you 2 to 6% smaller file size, but at the cost of extra processing time on both ends and a lower compatibility, as already mentioned. I have never found either of the later two to be worth working with, and so always use the standard.

Here is a link for some teckie details on the subject:

http://www.impulseadventure.com/phot...ized-jpeg.html

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Re: Jpeg format in Photoshop
Old 03-06-2007, 10:05 PM   #5 (permalink)
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Thank you RFS!
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