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HTML::Clean(3pm) User Contributed Perl Documentation HTML::Clean(3pm)
NAME
HTML::Clean - Cleans up HTML code for web browsers, not humans
SYNOPSIS
use HTML::Clean;
$h = HTML::Clean->new($filename); # or..
$h = HTML::Clean->new($htmlcode);
$h->compat();
$h->strip();
$data = $h->data();
print $$data;
DESCRIPTION
The HTML::Clean module encapsulates a number of common techniques for minimizing the size
of HTML files. You can typically save between 10% and 50% of the size of a HTML file
using these methods. It provides the following features:
Remove unneeded whitespace (beginning of line, etc)
Remove unneeded META elements.
Remove HTML comments (except for styles, javascript and SSI)
Replace tags with equivalent shorter tags (<strong> --> <b>)
etc.
The entire process is configurable, so you can pick and choose what you want to clean.
THE HTML::Clean CLASS
$h = HTML::Clean->new($dataorfile, [$level]);
This creates a new HTML::Clean object. A Prerequisite for all other functions in this
module.
The $dataorfile parameter supplies the input HTML, either a filename, or a reference to a
scalar value holding the HTML, for example:
$h = HTML::Clean->new("/htdocs/index.html");
$html = "<strong>Hello!</strong>";
$h = HTML::Clean->new(\$html);
An optional 'level' parameter controls the level of optimization performed. Levels range
from 1 to 9. Level 1 includes only simple fast optimizations. Level 9 includes all
optimizations.
$h->initialize($dataorfile)
This function allows you to reinitialize the HTML data used by the current object. This
is useful if you are processing many files.
$dataorfile has the same usage as the new method.
Return 0 for an error, 1 for success.
$h->level([$level])
Get/set the optimization level. $level is a number from 1 to 9.
$myref = $h->data()
Returns the current HTML data as a scalar reference.
strip(\%options);
Removes excess space from HTML
You can control the optimizations used by specifying them in the %options hash reference.
The following options are recognized:
boolean values (0 or 1 values)
whitespace Remove excess whitespace
shortertags <strong> -> <b>, etc..
blink No blink tags.
contenttype Remove default contenttype.
comments Remove excess comments.
entities " -> ", etc.
dequote remove quotes from tag parameters where possible.
defcolor recode colors in shorter form. (#ffffff -> white, etc.)
javascript remove excess spaces and newlines in javascript code.
htmldefaults remove default values for some html tags
lowercasetags translate all HTML tags to lowercase
parameterized values
meta Takes a space separated list of meta tags to remove,
default "GENERATOR FORMATTER"
emptytags Takes a space separated list of tags to remove when there is no
content between the start and end tag, like this: <b></b>.
The default is 'b i font center'
Please note that if your HTML includes preformatted regions (this means, if it includes
<pre>...</pre>, we do not suggest removing whitespace, as it will alter the rendered
defaults.
HTML::Clean will print out a warning if it finds a preformatted region and is requested to
strip whitespace. In order to prevent this, specify that you don't want to strip
whitespace - i.e.
$h->strip( {whitespace => 0} );
compat()
This function improves the cross-platform compatibility of your HTML. Currently checks
for the following problems:
Insuring all IMG tags have ALT elements.
Use of Arial, Futura, or Verdana as a font face.
Positioning the <TITLE> tag immediately after the <head> tag.
defrontpage();
This function converts pages created with Microsoft Frontpage to something a Unix server
will understand a bit better. This function currently does the following:
Converts Frontpage 'hit counters' into a unix specific format.
Removes some frontpage specific html comments
SEE ALSO
Modules
FrontPage::Web, FrontPage::File
Web Sites
Distribution Site - http://people.itu.int/~lindner/
AUTHORS and CO-AUTHORS
Paul Lindner for the International Telecommunication Union (ITU)
Pavel Kuptsov <admin AT modernperl.ru>
COPYRIGHT
The HTML::Strip module is Copyright (c) 1998,99 by the ITU, Geneva Switzerland. All
rights reserved.
You may distribute under the terms of either the GNU General Public License or the
Artistic License, as specified in the Perl README file.
perl v5.32.0 2019-12-22 HTML::Clean(3pm)
Generated by $Id: phpMan.php,v 4.55 2007/09/05 04:42:51 chedong Exp $ Author: Che Dong
On Apache
Under GNU General Public License
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