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Saving Images for the Web or E-Mail - IrfanView
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It is considered a breach of "netiquette" to place high
resolution files with little or no compression in e-mail or on web sites.
Sizing and compressing pictures is easy in almost every image processing
program or even viewer utilities.
IrfanView is an excellent freeware application that includes browsing,
sideshows, thumbnail generation, and basic image processing. It does a
fine job of Resizing and compressing.
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Resizing the Image
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| On the left is Resize
on the Image menu. Select it and the requester below comes up.
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| Under "Set new
size:" enter a width. Generally a value between 480 and
640 width is polite. As long as "Preserve aspect ratio
of:" is checked, IrfanView will enter the other dimension
automatically. For Internet preparation, you can ignore "...Percentage
of original". Resolution in dots per inch (DPI) is also
of no relevance whatever for the Internet. Always use "Resample"
for highest quality. |
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Optimizing and saving the compressed image
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| Under the File menu select
"Save as..". |
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A "Save Picture As..." requester will pop up. Click on
"Options" and the "Save Properties" dialogue
will pop up. There is no preview like Photoshop and PSP, so trial
and error will be needed to determine the the best setting for "Save
Quality". A value of 25 is a good starting spot. Save the image
under a different name, and click "Save".
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For a 480 pixel wide image, a size of 48K or less would be polite.
Under the File menu, select Open. If you saved the image in a folder
other than the original, use "Look in:" to navigate to
where the saved image is now stored.
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| When the open requester shows, chose "Details".
This will show the size of the Internet-ready image. It is shown to be 47
KB, which should be the perfect size of file for this size of image. If
it is larger, resave the original image with greater compression. |
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