October 1998
Intermediate to advanced
374 pages
12h 6m
English
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HTML
About HTML and Compression
A slight amount of waste is intrinsic to HTML, because HTML is written in ASCII text. ASCII is defined as using only seven bits of each byte, so one bit in eight, or 12.5%, is wasted. A larger amount of waste is due to the fact that text is highly compressible, but no compression is used for most HTTP transfers. It is normal for a text compression program to reduce the size of a text file by half, meaning that file can then be downloaded in half the time. Right now, transmission bandwidth is the bottleneck and CPU power for decompression is cheap, so compressing web pages would seem to make sense, even if it would make debugging problems harder.
Lack of compression is not an issue for small pages, but large text
pages can be sent significantly more quickly in compressed format to
a browser that understands gzip compression, for
example. (I believe Mosaic is the only popular browser that
understands gzip.) Another option is to compress
your content and configure your web server to use a certain MIME type
for that compressed content, but you then have to ask your users to
configure their browser to launch the decompression utility when a
file with a certain content type is received. This requires a bit of
work on both the client and server side.
Performance Tips for HTML Authors
Make it easy on the server
When composing HTML, try to keep pathnames short, both in number of directories in the path and in the length of each directory name.
You can scale static ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.