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HTML Pretty-Min
===============

[![Build Status](https://travis-ci.org/wasinger/html-pretty-min.svg?branch=master)](http://travis-ci.org/wasinger/html-pretty-min)
[![Latest Version](http://img.shields.io/packagist/v/wa72/html-pretty-min.svg)](https://packagist.org/packages/wa72/html-pretty-min)


HTML Pretty-Min is a PHP library for minifying and prettyprinting (indenting) HTML documents
that works directly on the DOM tree of an HTML document.

Currently it has the following features:

- **Prettyprint**:
  - Indent Block-level elements, do not indent inline elements

- **Minify**: 
  - Remove whitespace and newlines
  - Compress embedded Javascript using [mrclay/jsmin-php](https://packagist.org/packages/mrclay/jsmin-php)
  - Compress embedded CSS using [tubalmartin/cssmin](https://packagist.org/packages/tubalmartin/cssmin)
  - Remove some attributes when their value is empty (by default "style" and "class" attributes)
  - Remove comments, except those matching some given regular expressions (by default, IE conditional comments are kept)

Installation
------------

HTML Pretty-Min is listed on [Packagist](https://packagist.org/packages/wa72/html-pretty-min).

`composer require wa72/html-pretty-min`

Usage
-----

```php
<?php
use Wa72\HtmlPrettymin\PrettyMin;

$pm = new PrettyMin();

$output = $pm
    ->load($html)   // $html may be a \DOMDocument, a string containing an HTML code, 
                    // or an \SplFileInfo pointing to an HTML document
    ->minify()
    ->saveHtml();
```

For prettyprinting, call the `indent()` method instead of `minify()`.

**Attention**: Because the formatting is done directly on the DOM tree, a DOMDocument object given to the `load()` method
will be modified:

```php
$dom_document = new \DOMDocument('1.0', 'UTF-8');
$dom_document->loadHTML('<html>...some html code...</html>');

$pm->load($dom_document)->minify();

echo $dom_document->saveHTML(); // Will output the minified, not the original, document
```