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Author Topic: JPegs  (Read 3224 times)

Offline phischer

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« on: July 17, 2007, 02:14:05 PM »
What is the difference in the format options when saving as a JPEG?  What option should we use, Baseline ("Standard"), Baseline Optimized, or Progressive? If progressive, how many "scans"?

By phischer at 2007-07-17


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Re: JPegs
« Reply #1 on: July 17, 2007, 02:41:44 PM »
"Standard" is, as the name suggests, the most standard form of jpeg, and will be readable by most applications and browsers.  "Optimized" is less common, but makes the file size just a little smaller.  "Progressive" was created in the old days of the internet when people had slow connections.  It tells the web browser to load the image from the top down, so that you can see the image loading - it doesn't appear crisp all at once - with each successive "scan" it adds more information to the image.

Someone correct me if I'm wrong, please.

« Last Edit: July 17, 2007, 02:45:46 PM by kstruve »

Offline John

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Re: JPegs
« Reply #2 on: July 17, 2007, 05:41:13 PM »
found this online re: Progressive:

Progressive — This is the coolest of the three, at least for web designers. Have you ever been on a website where you saw a picture download in "waves"? You know, at first it's kind of chunky and blurry, then another pass goes by and it looks a little better, then finally it gets nice and sharp?

Not really sure if I'd classify this mode as 'the coolest'. lol.