minifyHTML: HTML Minifier

In csgillespie/minifyHTML: HTML Minifier

Description

This function takes a text string as input and minifies it according to large number of options. The blog post provides a fuller descriptions of the options.

Usage

minifyHTML(input, caseSensitive = FALSE,
  collapseBooleanAttributes = TRUE,
  collapseInlineTagWhitespace = FALSE, collapseWhitespace = TRUE,
  conservativeCollapse = FALSE, continueOnParseError = FALSE,
  customAttrAssign = "[]", customAttrCollapse = NULL,
  customAttrSurround = "[]",
  customEventAttributes = "[ /^on[a-z]{3,}$/ ]", decodeEntities = TRUE,
  html5 = TRUE, ignoreCustomComments = "[ /^!/ ]",
  ignoreCustomFragments = "[ /<%[\\s\\S]*?%>/, /<\\?[,\\s\\S]*?\\?>/ ]",
  includeAutoGeneratedTags = TRUE, keepClosingSlash = FALSE,
  maxLineLength = NULL, minifyCSS = TRUE, minifyJS = TRUE,
  minifyURLs = FALSE, preserveLineBreaks = FALSE,
  preventAttributesEscaping = FALSE, processConditionalComments = TRUE,
  processScripts = "[]", quoteCharacter = NULL,
  removeAttributeQuotes = FALSE, removeComments = TRUE,
  removeEmptyAttributes = TRUE, removeEmptyElements = FALSE,
  removeOptionalTags = FALSE, removeRedundantAttributes = FALSE,
  removeScriptTypeAttributes = FALSE,
  removeStyleLinkTypeAttributes = FALSE, removeTagWhitespace = FALSE,
  sortAttributes = TRUE, sortClassName = TRUE,
  trimCustomFragments = TRUE, useShortDoctype = TRUE)

Arguments

input	String
caseSensitive	Treat attributes in case sensitive manner (useful for custom HTML tags)
collapseBooleanAttributes	Omit attribute values from boolean attributes
collapseInlineTagWhitespace	Don't leave any spaces between display:inline; elements when collapsing. Must be used in conjunction with collapseWhitespace=TRUE
collapseWhitespace	Collapse white space that contributes to text nodes in a document tree
conservativeCollapse	Always collapse to 1 space (never remove it entirely). Must be used in conjunction with collapseWhitespace=true
continueOnParseError	Handle parse errors instead of aborting.
customAttrAssign	Arrays of regex'es that allow to support custom attribute assign expressions (e.g. '<div flex?="{{mode != cover}}"></div>')
customAttrCollapse	Regex that specifies custom attribute to strip newlines from (e.g. /ng-class/)
customAttrSurround	Arrays of regex'es that allow to support custom attribute surround expressions (e.g. <input {{#if value}}checked="checked"{{/if}}>)
customEventAttributes	Arrays of regex'es that allow to support custom event attributes for minifyJS (e.g. ng-click)
decodeEntities	Use direct Unicode characters whenever possible
html5	Parse input according to HTML5 specifications
ignoreCustomComments	Array of regex'es that allow to ignore certain comments, when matched
ignoreCustomFragments	Array of regex'es that allow to ignore certain fragments, when matched (e.g. <?php ... ?>, {{ ... }}, etc.)
includeAutoGeneratedTags	Insert tags generated by HTML parser
keepClosingSlash	Keep the trailing slash on singleton elements
maxLineLength	Specify a maximum line length. Compressed output will be split by newlines at valid HTML split-points
minifyCSS	Minify CSS in style elements and style attributes (uses clean-css)
minifyJS	Minify JavaScript in script elements and event attributes (uses UglifyJS)
minifyURLs	Minify URLs in various attributes (uses relateurl)
preserveLineBreaks	Always collapse to 1 line break (never remove it entirely) when whitespace between tags include a line break. Must be used in conjunction with collapseWhitespace=true
preventAttributesEscaping	Prevents the escaping of the values of attributes
processConditionalComments	Process contents of conditional comments through minifier
processScripts	Array of strings corresponding to types of script elements to process through minifier (e.g. text/ng-template, text/x-handlebars-template, etc.)
quoteCharacter	Type of quote to use for attribute values (' or ")
removeAttributeQuotes	Remove quotes around attributes when possible
removeComments	Strip HTML comments
removeEmptyAttributes	Remove all attributes with whitespace-only values
removeEmptyElements	Remove all elements with empty contents
removeOptionalTags	Remove optional tags
removeRedundantAttributes	Remove attributes when value matches default.
removeScriptTypeAttributes	Remove type="text/javascript" from script tags. Other type attribute values are left intact
removeStyleLinkTypeAttributes	Remove type="text/css" from style and link tags. Other type attribute values are left intact
removeTagWhitespace	Remove space between attributes whenever possible. Note that this will result in invalid HTML!
sortAttributes	Sort attributes by frequency
sortClassName	Sort style classes by frequency
trimCustomFragments	Trim white space around ignoreCustomFragments.
useShortDoctype	Replaces the doctype with the short (HTML5) doctype

See Also

html-minifer github page

Examples

input = "<!-- foo --><div>baz</div><!-- bar\n\n moo -->"
minifyHTML(input)

csgillespie/minifyHTML documentation built on June 10, 2019, 10 a.m.