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This Grunt plugin is wrapper of htmlclean.

If you want to just clean files, Command Line Tool is easy way.

Simple and safety HTML/SVG cleaner to minify without changing its structure.

For example, more than two whitespaces (even if those are divided by tags) in a line are reduced.


<p>The <strong> clean <span> <em> HTML is here. </em> </span> </strong> </p>


<p>The <strong>clean <span><em>HTML is here.</em></span></strong></p>

The whitespace that was on the right side of the <strong> was removed, and one on the left side was kept. And whitespaces on the both side of the <em> were removed.

For example, unneeded whitespaces in path data of SVG are reduced. In the case of this SVG file, 4,784 bytes were reduced:


htmlclean removes following texts.

  • Leading and trailing whitespaces (tabs and line-breaks are included)
  • Unneeded whitespaces between HTML/SVG tags
  • More than two whitespaces (reduced to one space)
  • HTML/SVG comments
  • Unneeded whitespaces, meaningless zeros, numbers, signs, etc. in path data of SVG (e.g. d attribute of path element, path attribute of animateMotion element, etc.)


Following texts are protected (excluded from Removing list).

  • Texts in textarea, script and style elements, and text nodes in pre elements
  • Quoted texts in tag attributes except path data of SVG
  • Texts in SSI tags (PHP, JSP, ASP/ASP.NET and Apache SSI)
  • IE conditional comments (e.g. <!--[if lt IE 7]>)
  • Texts between <!--[htmlclean-protect]--> and <!--[/htmlclean-protect]-->
  • Texts that is matched by protect option

More Information

See htmlclean.

Getting Started

This plugin requires Grunt ~0.4.1

If you haven't used Grunt before, be sure to check out the Getting Started guide, as it explains how to create a Gruntfile as well as install and use Grunt plugins. Once you're familiar with that process, you may install this plugin with this command:

npm install grunt-htmlclean --save-dev

Once the plugin has been installed, it may be enabled inside your Gruntfile with this line of JavaScript:


The "htmlclean" task


In your project's Gruntfile, add a section named htmlclean to the data object passed into grunt.initConfig().

  htmlclean: {
    options: {
      protect: /<\!--%fooTemplate\b.*?%-->/g,
      edit: function(html) { return html.replace(/\begg(s?)\b/ig, 'omelet$1'); }
    deploy: {
      expand: true,
      cwd: 'develop/',
      src: '**/*.html',
      dest: 'public_html/'

See htmlclean for options and more information.

Working with grunt-task-helper

For example, you want to clean only changed HTML files. Then grunt-task-helper helps it. In this case, using handlerByContent Function instead of this plugin is better. Because grunt parses files components in every tasks(targets). handlerByContent can be included to one task with other handlers (e.g. select changed HTML files).
See grunt-task-helper.



  taskHelper: {
    deploy: {
      options: {
        // Select files which are newer than `dest`.
        handlerByFile: 'newFile',
        // Clean the selected files.
        handlerByContent: require('grunt-htmlclean/node_modules/htmlclean')
        //handlerByContent: require('htmlclean') // If htmlclean is already installed. (Not grunt-htmlclean)
      expand: true,
      cwd: 'develop/',
      src: '**/*.html',
      dest: 'public_html/'