RE: Why JPGs for screen captures? test results

Subject: RE: Why JPGs for screen captures? test results
From: Katie Kearns <katie -at- vquill -dot- com>
To: "TECHWR-L" <techwr-l -at- lists -dot- raycomm -dot- com>
Date: Wed, 26 Feb 2003 09:48:30 -0800



If you have a powerful application like photoshop, using different file types to manage file size is not the best way of doing things.

Photoshop has, for the past few releases, had a wonderful tool called "Save for the Web". It allows you to tweak the image settings and compare all sorts of different settings on the same graphic so you can pick your ideal graphic. You can choose to shrink the image, choose from GIF/JPG/PNG/etc., limit the number of colors, pick exactly which colors to use, even tell it to snap to the "web safe palette". You can do all sorts of great things that can maximize the looks of your image while making the image incredibly small. You can even experiment on multiple copies of your image (it usually shows 4 examples at a time, but you can change that setting) to compare between them. It also tells you how big the resulting files will be.

It's every web designers dream come true. ;)

As was previsouly stated, choose GIF vs. JPG based on the type of image. Pictures with lots of gradients look good in JPG, while graphics with a lot of black or white, straight lines, or just large fields of color look better in GIF, just based on their compression mechanisms.

-Katie

At 12:36 PM 2/26/2003 -0500, you wrote:

I just did my own test
I captured 5 screen caps of the same image with Snagit 6.1.0 outputting to file and saving formats PNG, GIF, JPG, TIF, BMP. Each image into Photoshop 7 and reduced the image size by 50%. All images were then place into a Quark 4.04 document (my DTP of choice). I placed the original, the photoshop-reduced image and a second original scaled to 50% by Quark side-by-side. I then printed on an HP4000 and eye-balled the results for clarity. I accept that there may have been techniques I could have applied in Photoshop when reducing the image sizes to obtain better results.


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References:
RE: Why JPGs for screen captures? test results: From: Gregory Sweet

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