Reducing Load Time Through Image Optimization
Even though more and more Internet users switch to
broadband every year, a large portion of the web's population is still running
on good old dialup connections. It is therefore unwise to count them out of the
equation when you're designing your website, and a very major consideration we
have to make for dialup users is the loading time of your website.
Generally, all the text on your website will be loaded
in a very short time even on a dialup connection. The culprit of slow-loading
sites is mainly large images on your website, and it is very important to
strike a delicate balance between using just enough images to attract your
users and not to bog down the overall loading time of your site.
You should also go to a greater length and optimize
every image on your site to make sure it loads in the least time possible. What
I really mean is to use image editing software to remove unnecessary
information on your images, and thereby effectively reducing the file size of
your image without affecting its appearance.
If you own Photoshop, it will be obvious to you that
when you save an image as a JPEG file, a dialog box appears and lets you choose
the "quality" of the JPEG image -- normally a setting of 8 to 10 is
good enough as it will preserve the quality of your image while saving it at a
small file size. If you do not have Photoshop, there are many free image
compressors online that you can download and use to reduce your image's file
size.
On the other hand, you can opt to save your images in
PNG format to get the best quality at the least file size. You can also save
your images in GIF format -- the image editing software clips away all the
color information not used in your image, hence giving you the smallest file
size possible. However, saving in GIF format will often compromise the
appearance of your image, so make your choice wisely!
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