Convert PowerPoint to HTML

Overview

This article explains how to convert PowerPoint Presentation in HTML format using PHP. It covers the following topics.

Convert PowerPoint to HTML
Convert PPT to HTML
Convert PPTX to HTML
Convert ODP to HTML
Convert PowerPoint Slide to HTML

Java PowerPoint to HTML

For Java sample code to convert PowerPoint to HTML, please see the section below i.e. Convert PowerPoint to HTML. The code can load number of formats like PPT, PPTX and ODP in Presentation object and save it to HTML format.

About PowerPoint to HTML Conversion

Using Aspose.Slides for PHP via Java, applications and developers can convert a PowerPoint presentation to HTML: PPTX to HTML or PPT to HTML.

Aspose.Slides provides many options (mostly from the HtmlOptions class) that define the PowerPoint to HTML conversion process:

Convert an entire PowerPoint presentation to HTML.
Convert a specific slide in a PowerPoint presentation to HTML.
Convert presentation media (images, videos, etc.) to HTML.
Convert a PowerPoint presentation to responsive HTML.
Convert a PowerPoint presentation to HTML with speaker notes included or excluded.
Convert a PowerPoint presentation to HTML with comments included or excluded.
Convert a PowerPoint presentation to HTML with original or embedded fonts.
Convert a PowerPoint presentation to HTML while using the new CSS style.

Using its own API, Aspose developed free presentation to HTML converters: PPT to HTML, PPTX to HTML, ODP to HTML, etc.

You may want to check out other free converters from Aspose.

Note

Besides the conversion processes described here, Aspose.Slides also supports these conversion operations involving the HTML format:

Convert PowerPoint to HTML

Using Aspose.Slides, you can convert an entire PowerPoint presentation to HTML this way:

Create an instance of the Presentation class.
Use the Save method to save the object as an HTML file.

This code shows you how to convert a PowerPoint to HTML :

// Instantiate a Presentation object that represents a presentation file
  $pres = new Presentation("Convert_HTML.pptx");
  try {
    $htmlOpt = new HtmlOptions();
    $htmlOpt->getNotesCommentsLayouting()->setNotesPosition(NotesPositions::BottomFull);
    $htmlOpt->setHtmlFormatter(java("com.aspose.slides.HtmlFormatter")->createDocumentFormatter("", false));
    # Saving the presentation to HTML
    $pres->save("ConvertWholePresentationToHTML_out.html", SaveFormat::Html, $htmlOpt);
  } finally {
    if (!java_is_null($pres)) {
      $pres->dispose();
    }
  }

Convert PowerPoint to Responsive HTML

Aspose.Slides provides the ResponsiveHtmlController class that allows you to generate responsive HTML files. This code shows you how to convert a PowerPoint presentation to responsive HTML :

// Instantiate a Presentation object that represents a presentation file
  $pres = new Presentation("Convert_HTML.pptx");
  try {
    $controller = new ResponsiveHtmlController();
    $htmlOptions = new HtmlOptions();
    $htmlOptions->setHtmlFormatter(java("com.aspose.slides.HtmlFormatter")->createCustomFormatter($controller));
    # Saving the presentation to HTML
    $pres->save("ConvertPresentationToResponsiveHTML_out.html", SaveFormat::Html, $htmlOptions);
  } finally {
    if (!java_is_null($pres)) {
      $pres->dispose();
    }
  }

Convert PowerPoint to HTML with Notes

This code shows you how to convert a PowerPoint to HTML with notes :

  $pres = new Presentation("Presentation.pptx");
  try {
    $opt = new HtmlOptions();
    $options = $opt->getNotesCommentsLayouting();
    $options->setNotesPosition(NotesPositions::BottomFull);
    # Saving notes pages
    $pres->save("Output.html", SaveFormat::Html, $opt);
  } finally {
    if (!java_is_null($pres)) {
      $pres->dispose();
    }
  }

Convert PowerPoint to HTML with Original Fonts

Aspose.Slides provides the EmbedAllFontsHtmlController class that allows you to embed all the fonts in a presentation while converting the presentation to HTML.

To prevent certain fonts from being embedded, you can pass an array of font names to a parameterized constructor from the EmbedAllFontsHtmlController class. Popular fonts, such as Calibri or Arial, when used in a presentation, do not have to be embedded because most systems already contain such fonts. When those fonts are embedded, the resulting HTML document becomes unnecessarily large.

The EmbedAllFontsHtmlController class supports inheritance and provides the WriteFont method, which is meant to be overwritten.

  $pres = new Presentation("input.pptx");
  try {
    # exclude default presentation fonts
    $fontNameExcludeList = array("Calibri", "Arial" );
    $embedFontsController = new EmbedAllFontsHtmlController($fontNameExcludeList);
    $htmlOptionsEmbed = new HtmlOptions();
    $htmlOptionsEmbed->setHtmlFormatter(java("com.aspose.slides.HtmlFormatter")->createCustomFormatter($embedFontsController));
    $pres->save("input-PFDinDisplayPro-Regular-installed.html", SaveFormat::Html, $htmlOptionsEmbed);
  } finally {
    if (!java_is_null($pres)) {
      $pres->dispose();
    }
  }

Convert PowerPoint to HTML with High-quality Images

By default, when you convert PowerPoint to HTML, Aspose.Slides outputs small HTML with images at 72 DPI and deleted cropped areas. To obtain HTML files with higher quality images, you have to set the PicturesCompression property (from the HtmlOptions class) to 96 (i.e., PicturesCompression.Dpi96) or higher values.

This PHP code shows you how to convert a PowerPoint presentation to HTML while obtaining high quality images at 150 DPI (i.e. PicturesCompression.Dpi150):

  $pres = new Presentation("InputDoc.pptx");
  try {
    $htmlOpts = new HtmlOptions();
    $htmlOpts->setPicturesCompression(PicturesCompression::Dpi150);
    $pres->save("OutputDoc-dpi150.html", SaveFormat::Html, $htmlOpts);
  } finally {
    if (!java_is_null($pres)) {
      $pres->dispose();
    }
  }

This code shows you how to output HTML with full quality images:

  $pres = new Presentation("InputDoc.pptx");
  try {
    $htmlOpts = new HtmlOptions();
    $htmlOpts->setDeletePicturesCroppedAreas(false);
    $pres->save("Outputdoc-noCrop.html", SaveFormat::Html, $htmlOpts);
  } finally {
    if (!java_is_null($pres)) {
      $pres->dispose();
    }
  }

Convert Slide to HTML

To convert a specific slide in a PowerPoint to HTML, you have to instantiate the same Presentation class (used to convert entire presentations to HTML) and then use the Save method to save the file as HTML. The HtmlOptions class can be used to specify additional conversion options:

This PHP code shows you how to convert a slide in a PowerPoint presentation to HTML:

use aspose\slides\Presentation;
use aspose\slides\HtmlOptions;
use aspose\slides\NotesPositions;
use aspose\slides\SaveFormat;


class CustomFormattingController
{
    function writeDocumentStart($generator, $presentation) { }

    function writeDocumentEnd($generator, $presentation) { }

    function writeSlideStart($generator, $slide)
	{
        $generator->addHtml(sprintf(self::SlideHeader, $generator->getSlideIndex() + 1));
    }

    function writeSlideEnd($generator, $slide)
	{
        $generator->addHtml(self::SlideFooter);
    }

    function writeShapeStart($generator, $shape) { }

    function writeShapeEnd($generator, $shape) { }

    const SlideHeader = "<div class=\"slide\" name=\"slide\" id=\"slide%d\">";
    const SlideFooter = "</div>";
}
  $pres = new Presentation("Individual-Slide.pptx");
  try {
    $htmlOptions = new HtmlOptions();
    $htmlOptions->getNotesCommentsLayouting()->setNotesPosition(NotesPositions::BottomFull);
	$formattingController= java_closure(new CustomFormattingController(), null, java("com.aspose.slides.IHtmlFormattingController"));
    $htmlOptions->setHtmlFormatter(java("com.aspose.slides.HtmlFormatter")->createCustomFormatter($formattingController));
    # Saving File
    for($i = 0; $i < java_values($pres->getSlides()->size()) ; $i++) {
      $pres->save("Individual Slide" . ($i + 1) . "_out.html", array($i + 1 ), SaveFormat::Html, $htmlOptions);
    }
  } finally {
    if (!java_is_null($pres)) {
      $pres->dispose();
    }
  }

Save CSS and Images When Exporting To HTML

Using new CSS style files, you can easily change the style of the HTML file resulting from the PowerPoint to HTML conversion process.

The PHP code in this example shows you how to use overridable methods to create a custom HTML document with a link to a CSS file:

use aspose\slides\Presentation;
use aspose\slides\HtmlOptions;
use aspose\slides\NotesPositions;
use aspose\slides\SaveFormat;
use aspose\slides\EmbedAllFontsHtmlController;

class CustomHeaderAndFontsController extends EmbedAllFontsHtmlController {
    const m_basePath = 0;

    # Custom header template
    const Header = "<!DOCTYPE html>\n" .
            "<html>\n" .
            "<head>\n" .
            "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\">\n" .
            "<meta http-equiv=\"X-UA-Compatible\" content=\"IE=9\">\n" .
            "<link rel=\"stylesheet\" type=\"text/css\" href=\"%s\">\n" .
            "</head>";

    public $m_cssFileName;

    public function __construct($cssFileName)
    {
        parent::__construct();
		$this->m_cssFileName = $cssFileName;
	}

    public function writeDocumentStart($generator, $presentation)
    {
        $generator->addHtml(sprintf(self::Header, $m_cssFileName));
        $this->writeAllFonts($generator, $presentation);
    }

    public function writeAllFonts($generator, $presentation)
    {
        $generator->addHtml("<!-- Embedded fonts -->");
        parent::writeAllFonts($generator, $presentation);
    }
}

  $pres = new Presentation("pres.pptx");
  try {
    $options = new HtmlOptions();
    $options->setHtmlFormatter(java("com.aspose.slides.HtmlFormatter")->createCustomFormatter(new CustomHeaderAndFontsController("styles.css")));
    $pres->save("pres.html", SaveFormat::Html, $options);
  } finally {
    if (!java_is_null($pres)) {
      $pres->dispose();
    }
  }

Link All Fonts When Converting Presentation to HTML

If you do not want to embed fonts (to avoid increasing the size of the resulting HTML), you can link all fonts by implementing your own LinkAllFontsHtmlController version.

This PHP code shows you how to convert a PowerPoint to HTML while linking all fonts and excluding “Calibri” and “Arial” (since they already exist in the system):

use aspose\slides\Presentation;
use aspose\slides\HtmlOptions;
use aspose\slides\NotesPositions;
use aspose\slides\SaveFormat;
use aspose\slides\EmbedAllFontsHtmlController;

class LinkAllFontsHtmlController extends EmbedAllFontsHtmlController
{
    private $m_basePath;

    public function __construct($fontNameExcludeList, $basePath)
    {
        parent::__construct($fontNameExcludeList);
        $this->m_basePath = $basePath;
    }

    function writeFont
    (
            $generator,
            $originalFont,
            $substitutedFont,
            $fontStyle,
            $fontWeight,
            $fontData)
    {
        try {
            $fontName = java_is_null($substitutedFont) ? $originalFont->getFontName() : $substitutedFont->getFontName();
            $path = $fontName . ".woff"; // some path sanitaze may be needed
			$fstr = new Java("java.io.FileOutputStream", $this->m_basePath . $path);
			$Array = new java_class("java.lang.reflect.Array");
			try {
				$fstr->write($fontData, 0, $Array->getLength($fontData));
			} finally {
				$fstr->close();
			}

            $generator->addHtml("<style>");
            $generator->addHtml("@font-face { ");
            $generator->addHtml("font-family: '" . $fontName . "'; ");
            $generator->addHtml("src: url('" . $path . "')");

            $generator->addHtml(" }");
            $generator->addHtml("</style>");
        } catch (JavaException $ex) {
        }
    }
}
    $pres = new Presentation("pres.pptx");
  try {
    # Exclude default presentation fonts
	$fontNameExcludeList = array("Calibri", "Arial");
    $linkcont = new LinkAllFontsHtmlController($fontNameExcludeList, "C:/Windows/Fonts/");
    $htmlOptionsEmbed = new HtmlOptions();
    $htmlOptionsEmbed->setHtmlFormatter(java("com.aspose.slides.HtmlFormatter")->createCustomFormatter($linkcont));
    $pres->save("pres.html", SaveFormat::Html, $htmlOptionsEmbed);
  } finally {
    if (!java_is_null($pres)) {
      $pres->dispose();
    }
  }

Convert PowerPoint to Responsive HTML

This PHP code shows you how to convert a PowerPoint presentation to responsive HTML:

  $pres = new Presentation("SomePresentation.pptx");
  try {
    $saveOptions = new HtmlOptions();
    $saveOptions->setSvgResponsiveLayout(true);
    $pres->save("SomePresentation-out.html", SaveFormat::Html, $saveOptions);
  } finally {
    if (!java_is_null($pres)) {
      $pres->dispose();
    }
  }

Export Media Files to HTML

Using Aspose.Slides for PHP via Java, you can export media files this way:

Create an instance of the Presentation class.
Get a reference to the slide.
Add a video to the slide.
Write the presentation as a HTML file.

This PHP code shows you how to add a video to the presentation and then save it as HTML:

// Loading a presentation
  $pres = new Presentation();
  try {
    $path = "./out/";
    $fileName = "ExportMediaFiles_out.html";
    $baseUri = "http://www.example.com/";
    $file = new Java("java.io.File", "my_video.avi");
    $Array = new JavaClass("java.lang.reflect.Array");
    $Byte = new JavaClass("java.lang.Byte");
    $videoData = $Array->newInstance($Byte, $Array->getLength($file));
    try {
        $dis = new Java("java.io.DataInputStream", new Java("java.io.FileInputStream", $file));
        $dis->readFully($videoData);
    } finally {
        if (!java_is_null($dis)) $dis->close();
    }
    $video = $pres->getVideos()->addVideo($videoData);
    $pres->getSlides()->get_Item(0)->getShapes()->addVideoFrame(10, 10, 100, 100, $video);
    $controller = new VideoPlayerHtmlController($path, $fileName, $baseUri);
    # Setting HTML options
    $htmlOptions = new HtmlOptions($controller);
    $svgOptions = new SVGOptions($controller);
    $htmlOptions->setHtmlFormatter(java("com.aspose.slides.HtmlFormatter")->createCustomFormatter($controller));
    $htmlOptions->setSlideImageFormat(SlideImageFormat::svg($svgOptions));
    # Saving the file
    $pres->save($fileName, SaveFormat::Html, $htmlOptions);
  } catch (JavaException $e) {
  } finally {
    if (!java_is_null($pres)) {
      $pres->dispose();
    }
  }

Convert PPTX to PPT Convert PowerPoint to PDF