HtmlSaveOptionsMetafileFormat Property

Specifies in what format metafiles are saved when exporting to HTML, MHTML, or EPUB. Default value is Png, meaning that metafiles are rendered to raster PNG images.

Namespace:  Aspose.Words.Saving
Assembly:  Aspose.Words (in Aspose.Words.dll) Version: 21.2.0

ExpandedSyntax

public HtmlMetafileFormat MetafileFormat { get; set; }

Property Value

Type: HtmlMetafileFormat

ExpandedRemarks

Metafiles are not natively displayed by HTML browsers. By default, Aspose.Words converts WMF and EMF images into PNG files when exporting to HTML. Other options are to convert metafiles to SVG images or to export them as is without conversion.

Some image transforms, in particular image cropping, will not be applied to metafile images if they are exported to HTML without conversion.

ExpandedExamples

Shows how to convert SVG objects to a different format when saving HTML documents.
string html = 
    @"<html>
        <svg xmlns='http://www.w3.org/2000/svg' width='500' height='40' viewBox='0 0 500 40'>
            <text x='0' y='35' font-family='Verdana' font-size='35'>Hello world!</text>
        </svg>
    </html>";

Document doc = new Document(new MemoryStream(Encoding.UTF8.GetBytes(html)));

// This document contains a <svg> element in the form of text.
// When we save the document to HTML, we can pass a SaveOptions object
// to determine how the saving operation handles this object.
// Setting the "MetafileFormat" property to "HtmlMetafileFormat.Png" to convert it to a PNG image.
// Setting the "MetafileFormat" property to "HtmlMetafileFormat.Svg" preserve it as a SVG object.
// Setting the "MetafileFormat" property to "HtmlMetafileFormat.EmfOrWmf" to convert it to a metafile.
HtmlSaveOptions options = new HtmlSaveOptions { MetafileFormat = htmlMetafileFormat };

doc.Save(ArtifactsDir + "HtmlSaveOptions.MetafileFormat.html", options);

string outDocContents = File.ReadAllText(ArtifactsDir + "HtmlSaveOptions.MetafileFormat.html");

switch (htmlMetafileFormat)
{
    case HtmlMetafileFormat.Png:
        Assert.True(outDocContents.Contains(
            "<p style=\"margin-top:0pt; margin-bottom:0pt\">" +
                "<img src=\"HtmlSaveOptions.MetafileFormat.001.png\" width=\"500\" height=\"40\" alt=\"\" " +
                "style=\"-aw-left-pos:0pt; -aw-rel-hpos:column; -aw-rel-vpos:paragraph; -aw-top-pos:0pt; -aw-wrap-type:inline\" />" +
            "</p>"));
        break;
    case HtmlMetafileFormat.Svg:
        Assert.True(outDocContents.Contains(
            "<span style=\"-aw-left-pos:0pt; -aw-rel-hpos:column; -aw-rel-vpos:paragraph; -aw-top-pos:0pt; -aw-wrap-type:inline\">" +
            "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" version=\"1.1\" width=\"499\" height=\"40\">"));
        break;
    case HtmlMetafileFormat.EmfOrWmf:
        Assert.True(outDocContents.Contains(
            "<p style=\"margin-top:0pt; margin-bottom:0pt\">" +
                "<img src=\"HtmlSaveOptions.MetafileFormat.001.emf\" width=\"500\" height=\"40\" alt=\"\" " +
                "style=\"-aw-left-pos:0pt; -aw-rel-hpos:column; -aw-rel-vpos:paragraph; -aw-top-pos:0pt; -aw-wrap-type:inline\" />" +
            "</p>"));
        break;
}

ExpandedSee Also