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minimize
Advanced tools
Readme
Minimize is a HTML minifier based on the node-htmlparser. This depedency will ensure output is solid and correct. Minimize is focussed on HTML5 and will not support older HTML drafts. It is not worth the effort and the web should move forward. Currently, HTML minifier is only usuable server side. Client side minification will be added in a future release.
To get the minified content make sure to provide a callback. Optional an options
object can be provided. All options are listed below and false
per default.
var Minimize = require('minimize')
, minimize = new Minimize({
empty: true, // KEEP empty attributes
cdata: true, // KEEP CDATA from scripts
comments: true, // KEEP comments
ssi: true, // KEEP Server Side Includes (i.e. <!--#include virtual="../quote.txt" -->)
conditionals: true, // KEEP conditional internet explorer comments
spare: true, // KEEP redundant attributes
quotes: true // KEEP arbitrary quotes
});
minimize.parse(content, function (error, data) {
console.log(data);
});
Empty
Empty attributes can usually be removed, by default all are removed, excluded HTML5 data-* and microdata attributes. To retain empty elements regardless value, do:
var Minimize = require('minimize')
, minimize = new Minimize({ empty: true });
minimize.parse(
'<h1 id=""></h1>',
function (error, data) {
// data output: <h1 id=""></h1>
}
);
CDATA
CDATA is only required for HTML to parse as valid XML. For normal webpages this is rarely the case, thus CDATA around javascript can be omitted. By default CDATA is removed, if you would like to keep it, pass true:
var Minimize = require('minimize')
, minimize = new Minimize({ cdata: true });
minimize.parse(
'<script type="text/javascript">\n//<![CDATA[\n...code...\n//]]>\n</script>',
function (error, data) {
// data output: <script type=text/javascript>//<![CDATA[\n...code...\n//]]></script>
}
);
Comments
Comments inside HTML are usually beneficial while developing. Hiding your comments in production is sane, safe and will reduce data transfer. If you ensist on keeping them, for instance to show a nice easter egg, set the option to true.
var Minimize = require('minimize')
, minimize = new Minimize({ comments: true });
minimize.parse(
'<!-- some HTML comment -->\n <div class="slide nodejs">',
function (error, data) {
// data output: <!-- some HTML comment --><div class="slide nodejs">
}
);
Conditionals
Conditional comments only work in IE, and are thus excellently suited to give special instructions meant only for IE. Minimize can be configured to retain these comments. But since the comments are only working until IE9 (inclusive) the default is to remove the conditionals.
var Minimize = require('minimize')
, minimize = new Minimize({ conditionals: true });
minimize.parse(
"<!--[if ie6]>Cover microsofts' ass<![endif]-->\n<br>",
function (error, data) {
// data output: <!--[if ie6]>Cover microsofts' ass<![endif]-->\n<br>
}
);
Spare
Spare attributes are of type boolean of which the value can be omitted in HTML5. To keep attributes intact for support of older browsers, supply:
var Minimize = require('minimize')
, minimize = new Minimize({ spare: true });
minimize.parse(
'<input type="text" disabled="disabled"></h1>',
function (error, data) {
// data output: <input type=text disabled=disabled></h1>
}
);
Quotes
Quotes are always added around attributes that have spaces or an equal sign in their value. But if you require quotes around all attributes, simply pass quotes:true, like below.
var Minimize = require('minimize')
, minimize = new Minimize({ quotes: true });
minimize.parse(
'<p class="paragraph" id="title">\n Some content\n </p>',
function (error, data) {
// data output: <p class="paragraph" id="title">Some content</p>
}
);
Tests can be easily run by using either of the following commands. Travis.ci is used for continous integration.
make test
make test-watch
npm test
Minimize is influenced by the HTML minifier of kangax. This module parses the DOM as string as opposes to an object. However, retaining flow is more diffucult if the DOM is parsed sequentially. Minimize is not client-side ready. Kangax minifier also provides some additional options like linting. Minimize will retain strictly to the business of minifying. Minimize is already used in production by Nodejitsu.
node-htmlparser of fb55 is used to create an object representation of the DOM.
FAQs
Minimize HTML
We found that minimize demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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