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Compression Program(s)?


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#1 stevealmighty

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Posted 26 April 2006 - 12:50 PM

Is there a compression program that will compress .tif images, and when "uncompressed" won't lose it's quality?

At work we have a server with 600gb of storage. It's nearly full (well, almost 500gb full anyways), and I'd like to do something aside from upgrading to a terrabyte.

Also, if some thing is compressed, is it likely to be "damaged" or become corrupt making it unreadable? Can it be saved (burned) to a CD or DVD? I don't know anything about compression programs, so I'd figure I'd ask before I start trying it!

Some of the extensions that we'd be compressing is .gif, .jpg, .tif, .png, .raw, .tga, .psd and .pdf (just so you know).

Thanks in advance!
War produces veterans, wounded both physically and mentally. They have sacrificed for us.....and it is now our job to help these veterans, as they have already helped us in ways we will never know, in ways that we cannot fathom, and in ways that we take granted every day.
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#2 tg1911

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Posted 26 April 2006 - 02:53 PM

Is there a compression program that will compress .tif images, and when "uncompressed" won't lose it's quality?

Here's some free one's, you can try:
7-Zip
IZArc
WinRAR
ZipGenius

Never tried archiving photos, so I can't suggest one, or the other, but they're free, so try them all, and see which one has the best results.

I'd be interested in hearing, the outcome of your testing, if you go that route.

Also, if some thing is compressed, is it likely to be "damaged" or become corrupt making it unreadable?

Not if the program works the way, it's supposed to.

Can it be saved (burned) to a CD or DVD?

You shouldn't have any problems, burning compressed files to disk.
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#3 stevealmighty

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Posted 26 April 2006 - 02:59 PM

I'll give them a whirl and let you know how I made out.

Thanks for the help tg1911!
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#4 yano

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Posted 26 April 2006 - 07:19 PM

Can it be saved (burned) to a CD or DVD?

500GB burnt to
CDs: 732
DVDs: 107

CD at size of 700MB and a DVD at the size of 4.7GB (4812.8MB)

#5 stevealmighty

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Posted 27 April 2006 - 09:02 AM

I'd be interested in hearing, the outcome of your testing, if you go that route.


Well, not quite what I was expecting. I thought that if I compressed the images, that they'd atleast cut the file size in half, but was hoping for more (like reducing file size by 60-75%). Nope. Not even close. I compressed a folder full of .tif images(approx. 122 pictures). The before size was 633mb. The after size (after I compressed the entire folder) was only 572mb. :thumbsup:

So, for the amount it was compressed, compaired to the amount of time that it took to compress it, and taking into account the amount of time that it'll take to uncompress it, it's not really worth the hassle IMHO.

I must say though, I did learn something! I didn't know that different programs could "unzip" or uncompress already compressed folders that have been compressed by other programs. From what I read, IZarc and 7-ZIP can unzip/uncompress an already compressed folder that was compressed using other programs, including Winzip. Good to know!
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