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Thread: Tif File

  1. #1
    Silver Lounger
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    Tif File

    I am looking for the best way to compress or "save as" a tif file. Someone sent me a tif file with multiple pages in it similar to when someone faxes you multiple sheets. The tif file size is 2 MB.

    I have tried saving the file as a different type but can only get it to compress to 1 MB. If I try saving as a GIF file then only one page is saved.

    Is there a better way?

    Thanks,
    John

  2. #2
    Plutonium Lounger
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    Re: Tif File

    What is your purpose? If you want to compress the file in order to send it by e-mail, for example, you can zip it.

    Most standard graphics formats (.jpg, .png, .gif, ...) do not support multiple pages in a file. You could use IrfanView (free) to extract the pages to individual bitmap files, then convert those to .gif or .jpg. I have no idea whether the combined file sizes will be smaller than the original .tif file. You'd have to experiment.

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    Re: Tif File

    Hans,

    I am going to be storing the image.

    I have been surfing the web and there are file compression programs available. Perhaps someone could recommend one; preferably <img src=/S/free.gif border=0 alt=free width=30 height=15> .

    Regards,
    John

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    Re: Tif File

    The last two replies in the thread WinZip 10.0 beta contain links to free compression utilities.

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    Uranium Lounger
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    Re: Tif File

    I'm curious why you would even bother with compressing something as small as 2 MB. In today's world of monster hard drives, 2 MB is about a bulky as 2 KB was 5 or 6 years ago.
    <IMG SRC=http://www.wopr.com/w3tuserpics/DocWatson_sig.gif>

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    Re: Tif File

    Doc,

    Eventually the files get stored within some auditing software. In any one month there can be in total 1 to 5 gig of tif files to be stored.

    Regards,
    John

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    Uranium Lounger
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    Re: Tif File

    John,

    I understand. Is changing the file format an option ??? If you were to save that .tif file as a .jpg you likely wouldn't lose much in the way of quality (unless the higher resolution of the .tif is necessary) and the file size would be maybe 300KB if saved at medium to high quality. The format change can be done with many programs. A good <img src=/S/free.gif border=0 alt=free width=30 height=15> image manipulation program is Irfanview. HTH
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    Re: Tif File

    I should have read your first post and Hans reply. If you adjust the quality/compression of the file before you save it, it should trim that file size down. Here's a screenshot of the IrfanView Resize/Resample window (Open image in IrfanView>click Image>Resize/Resample). Adjusting the DPI setting and compressing the image by half should get you a size you can live with.
    <IMG SRC=http://www.wopr.com/w3tuserpics/DocWatson_sig.gif>

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    Re: Tif File

    (Edited by HansV and WendellB to make URLs clickable - see <!help=19>Help 19<!/help>)

    John,
    There are a few things you should be clear about.
    A) There is a difference between:
    1) File extension
    2) File format
    3) Data compression
    4) Image encoding
    [img]/forums/images/smilies/cool.gif[/img] Not all program support all the possible combinations of file format, data compression, and image encoding.

    "TIFF (Tag(ged) Image File Format) is a powerful and flexible image format(probably the most versatile and diverse image format of all in existence), unfortunately, this same versatility leads to some compatibility problems between programs."
    http://www.zan1011.com/tiff.htm
    http://home.earthlink.net/~ritter/tiff/
    To optimize the storage of images:
    1) Choose image encoding. Even if your original "tif" is a photo, it may be just an ordinary bitmap BMP or DIB device independent bitmap. Using a form of JPEG here may save a surprising amount of space. Also decide how much image loss or Q you can tolerate.
    2) Choose data compression. You may be surprised you are already paying for several different Data compression engines. CCIT, LZW, ZIP. If compatibility is an issue, you may find that the most readily available is better than the best compressor.
    3) Finally choose the file format. TIFF, GIFF, & PNG all support multiple images. The question is will the software you decide to use support it?

    In reality software vendors will sell you their products in the reverse order. They are in the business of selling software. There is also the issue of software patents. Most of the image related patents are so old, they are near or past their expiration dates. But tell that to the software vendors! http://www.wired.com/news/business/0,1367,63200,00.html

    http://www.faqs.org/faqs/graphics/fileform.../section-4.html

    http://www.imageconverterplus.com/faq/conv...page-jpeg-file/
    Can I convert a multipage TIFF file into a multipage JPEG file?
    How do I convert a multipage TIFF file into a multipage JPEG file?
    --------------------------------------------------------------------------------
    Answer:
    As you know, JPEG format does not support multipage property. Thus, you cannot convert a multipage TIFF file into one JPEG file.

    Still, you can convert every page of a TIFF file into a separate JPEG file.

    If you want to convert files only to use a better JPEG compression, convert your multipage TIFF file into another multipage TIFF file with JPEG compression. It's optimal for multipage files containing photo images.

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