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Re: [NH] image load times and height/width specified in HTML

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  • Greg Chapman
    Hi Mike,On 20 Feb 07 14:02 Mike Breiding - Morgantown WV said: Does the specified size of an image reflect it s load time?No.All
    Message 1 of 9 , Feb 20, 2007
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      Hi Mike,

      On 20 Feb 07 14:02 Mike Breiding - Morgantown WV <mike@...>
      said:
      > Does the specified size of an image reflect it's load time?

      No.

      All that matters is the size of the file.

      The slowest part of process from clicking a link to view a page and
      its eventual display on your machine is the transmission of the
      request and delivery of the page and associated files. The larger the
      files to be received the longer it takes. The processing time to
      re-size an image once it has been received is negligible.

      To test this just point your browser at a large image file, perhaps a
      photograph from a digital camera uploaded to your web space. Modern
      browsers normally re-size the image so it fits the browser window.
      Once its arrived use the appropriate method to view it full size and
      toggle back again... It's instantaneous, isn't it?

      Obviously, with a file as small as 50k the delays may not be
      noticable, especially on a broadband connection, but re-sizing by the
      browser takes only microseconds, its the transmission that takes tens
      of seconds.

      Greg


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    • Mike Breiding - Morgantown WV
      ... Thanks, Jeff. Changing the width/height dimensions was just a quick and dirty/lazy way for me to get smaller images. I suspected smaller files would be the
      Message 2 of 9 , Feb 20, 2007
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        At 09:43 AM 2/20/2007 , you wrote:
        >Logic tells me that files' size is what dictates its loading time, and
        >displaying a file at a different size than stored at probably adds time
        >to the loading, (loading vs. (loading + resize for display) The
        >difference may be very small, but a initially stored smaller file will
        >load faster than a larger file.
        >
        >That is the reason people create thumbnail images that link to the
        >larger resolution files.
        >
        >Small loads faster, shows a sample and if the party wants the big one
        >(for detail) they can go to it. Jeff

        Thanks, Jeff.
        Changing the width/height dimensions was just a quick and dirty/lazy way
        for me to get smaller images.
        I suspected smaller files would be the only way to accomplish faster
        loading but I decided to get a second opinion by posting to ntb-htm.

        -Mike


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      • Jeff Scism
        Go with EzThumbs, it does a wonderful job of creating thumbnails and is free from the fine folks at Fookes Software... Mike Breiding - Morgantown WV wrote:
        Message 3 of 9 , Feb 20, 2007
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          Go with EzThumbs, it does a wonderful job of creating thumbnails and is
          free from the fine folks at Fookes Software...

          Mike Breiding - Morgantown WV wrote: Thanks, Jeff.

          > Changing the width/height dimensions was just a quick and dirty/lazy way
          > for me to get smaller images.
          > I suspected smaller files would be the only way to accomplish faster
          > loading but I decided to get a second opinion by posting to ntb-htm.
          >
          > -Mike
          >
        • GilaMountainDulcimers.com
          File size is file size. Changing the dimensions doesn t change the file size and load times are based on file size. You will find that if you reduce the
          Message 4 of 9 , Feb 20, 2007
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            File size is file size. Changing the dimensions doesn't change the file size and load times are based on file size. You will find that if you reduce the width and height of the picture and then resample it to reduce the file size, you will not loose picture quality on the web. However, if you wanted to print the picture later on, the printing quality might be lessened depending on how small you resample it. If you are only going to use the picture on your website, then you can reduce the file size considerably without losing quality.
            If I want to preserve a picture, I usually resize and resample it, but save it under a different name, say 012_sm.jpg and 012_lg.jpg so that I still have the lg original to work with later if I should change my mind about how I was using it.

            Hugs,
            Kerry Coates in New Mexico
            Visit all my websites!
            http://www.GilaMountainDulcimers.com
            http://www.Amazing-Health-Products.com
            http://www.GamblingStrategyCards.com
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            ----- Original Message -----
            From: Mike Breiding - Morgantown WV
            To: ntb-html@yahoogroups.com
            Sent: Tuesday, February 20, 2007 7:02 AM
            Subject: [NH] image load times and height/width specified in HTML




            Greetings,
            Does the specified size of an image reflect it's load time?

            In other words would this image: <img src="013.jpg" width="515"
            height="343" title="" alt="" /> which we will say has a file size of 50k,
            load any faster if the image size was changed to: width="415" height="243"
            but the file size remains the same?

            Thanks,
            -Mike

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          • Don - HtmlFixIt.com
            ... totally agree - EZ Thumbnails is a great little program people are correct -- resizing does take time for the processor, but such an insignificant amount
            Message 5 of 9 , Feb 20, 2007
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              Jeff Scism wrote:
              > Go with EzThumbs, it does a wonderful job of creating thumbnails and is
              > free from the fine folks at Fookes Software...
              >

              totally agree - EZ Thumbnails is a great little program

              people are correct -- resizing does take time for the processor, but
              such an insignificant amount that it isn't of any concern -- it can also
              affect quality, but again insignificantly in most cases

              the only advantage of giving them the whole 50K file when they could be
              using a much smaller file sized thumbnail is that it is then essentially
              preloaded ... but if you are doing that for five images and they aren't
              necessarily going to look at all of them ... you are wasting bandwidth
              which means time for them and expense for you or your isp and that
              eventually drives the cost up. Wasted bandwidth is a bad thing -- even
              if the rest of the world doesn't understand that.
            • sisterscape
              ... I also put a vote in for EZ Thumbnails. Absolutely LOVE it. ____________________________________________________________________________________ Yahoo!
              Message 6 of 9 , Feb 20, 2007
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                --- "Don - HtmlFixIt.com" <don@...> wrote:

                > Jeff Scism wrote:
                >
                > totally agree - EZ Thumbnails is a great little program
                >
                >

                I also put a vote in for EZ Thumbnails. Absolutely LOVE it.



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              • Mike Breiding - Morgantown WV
                ... Thanks to everyone for their input. I use FastStone Image Viewer to generate thumbnails and resize my pics. I
                Message 7 of 9 , Feb 20, 2007
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                  At 12:13 PM 2/20/2007 , you wrote:
                  >--- "Don - HtmlFixIt.com" <don@...> wrote:
                  >
                  > > Jeff Scism wrote:>
                  > > totally agree - EZ Thumbnails is a great little program.
                  >
                  >I also put a vote in for EZ Thumbnails. Absolutely LOVE it.

                  Thanks to everyone for their input.

                  I use <http://www.faststone.org/FSViewerDetail.htm>FastStone Image Viewer
                  to generate thumbnails and resize my pics.
                  I have found it to be more robust and flexible than most thumbnail generators.
                  And, it does, much, much more - all for the low, low price of freeware.

                  -Mike


                  ----------
                  Check it out:
                  www.EpicRoadTrips.us

                  ~~~



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