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TECH
TOOLS -
DECEMBER 2004 |
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WHAT IS A WEB
ACCELERATOR? |
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A web accelerator is software that
you install on your computer that optimizes the delivery of Web
content to your computer by caching and compressing data.
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With Web Acceleration, Web sites will
download and display for the first time in about half the time
normally required on a 56K line. Subsequent page loads are delivered
even faster. Most web accelerators are easy to install, come with
preset settings and work with most every system.
Some advanced web pages using Java, Flash, etc. may not work with
the accelerator software. |
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There are four main attributes of
accelerator software... |
1) CACHED
PAGES
Caching is the temporary storage of web pages on your computer for
later retrieval. If you look at the preferences option of your
browser, you're likely to find an option for setting your cacke
preferences. This sets aside a section of of your computer’s hard
disk to store web pages that you have visited. If need be, this
section can be emptied by going to the tools section of your browser
and choosing to delete "Temporary Internet Files"
When you click the "Back" button of your browser, the page you have
previously viewed is pulled from the cache file on your computer.
2) COMPRESSION
Compression is the reduction in size of data in order to save space
or transmission time. For data transmission, compression can be
performed on just the data content or on the entire transmission
unit depending on a number of factors.
Content compression can be as simple as removing all extra space
characters, inserting a single repeat character to indicate a string
of repeated characters, and substituting smaller bit strings for
frequently occurring characters. This kind of compression can reduce
a text file to 50% of its original size.
Graphic image file formats are usually designed to compress
information as much as possible (since these can tend to become very
large files). Graphic image compression can be either lossy (some
information is permanently lost) or lossless (all information can be
restored).
One of the most noticeable aspects of a web accelerator is the
degradation of images due to compression of the graphics on a page.
Acceleration improves your surfing speed significantly by reducing
image quality significantly - making images appear fuzzy, or lacking
in color. Most accelerators have different levels that you should
try until you find the one you like best.
Note: If you use Internet Explorer or a related browser, you can
quickly refresh a graphic image or an entire page to full quality by
right clicking on the image or the background of the page and
choosing Refresh Picture with Full Quality, or you can select
Refresh Page with Full Quality to improve the quality of all the
graphics on the page at once.
3) AD BLOCKER recognizes and removes
banner ads and other advertising from each page. This accelerates
page loading, eliminates annoying distractions and protects your
privacy from online advertisers.
4) POP-UP BLOCKER A built-in pop-up
blocker stops annoying pop-up advertisements from loading and
slowing down your internet connection by using up bandwidth. Easy to
configure, the pop-up blocking feature can usually be enabled or
disabled with just a few clicks. Settings are provided for sites you
would like to allow pop-ups from. Adding and removing sites from the
list is usually very easy to do. |
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There are two main types of web
accelerators available... |
Most you will download and pay for
only once. These accelerators usually perform optimization routines
and configure your modem settings to their best performing values.
You can also find and download web accelerator software online -
some are free and some must be purchased. Many Internet Service
Providers are now offering free web accelerators for their dial-up
clients. You should be careful as some free web accelerators can be
filled with "tracking your surfing habits" routines and advertising
schemes. The more honest companies will provide a notification on
their site as to their software does NOT contain spyware.
The other type of web accelerator requires a monthly or yearly
subscription to a service that provides acceleration through a
cached network. This simply means that they "predict" the sites you
will visit and pre-fetch them.
A Web Accelerator won’t provide your computer with a blazing fast
cable connection, but if you want better connections and
significantly increased speed – you may wish to try acceleration
software. Even if the acceleration software provides just a minor
speed increase, you'll still save a lot of time. |
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ONLINE RESOURCE |
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