Background color of text is lost after RTF to HTML conversion using Java

Aspose.Words Product Family
1

Issue) Rtf text having background color is not converted properly to Html / Pdf file. Its coming just as simple text without background color.
Below is the sample rtf text and its related image for reference.

Rtf text:

{\rtf1\ansi\deff0\uc1\ansicpg1252\deftab720{\fonttbl{\f0\fnil\fcharset1 Arial;}{\f1\fnil\fcharset1 Tahoma;}{\f2\fnil\fcharset1 Calibri;}{\f3\fnil\fcharset2 WingDings;}{\f4\fnil\fcharset2 Symbol;}}{\colortbl\red0\green0\blue0;\red255\green0\blue0;\red0\green128\blue0;\red0\green0\blue255;\red255\green255\blue0;\red255\green0\blue255;\red128\green0\blue128;\red128\green0\blue0;\red0\green255\blue0;\red0\green255\blue255;\red0\green128\blue128;\red0\green0\blue128;\red255\green255\blue255;\red192\green192\blue192;\red128\green128\blue128;\red0\green0\blue0;\red128\green128\blue0;\red0\green0\blue0;}\wpprheadfoot1\paperw12240\paperh15840\margl1880\margr1880\margt1440\margb1440\headery720\footery720\pgbrdrhead\pgbrdrfoot\pgbrdropt32\endnhere\sectdefaultcl{\*\generator WPTools_7.000;}{\stylesheet
{\s1\li0\fi0\ri0\sb0\sa160\sl259\slmult1\ql\vertalt\f2\fs22\cf15 Normal;}
{\s2\li0\fi0\ri0\sb0\sa0\ql\vertalt\fs22 Default Paragraph Font;}}
{\sl250\slmult1\plain\f2\fs22\cf0\cb1 Text with red background\par
\pard\plain\sl250\slmult1\plain\f0\fs22\par
}}

Sample Image:
1_RtfImageTextWithRedBackground.jpg (24.8 KB)

Sample java code used for reference:
Added following dependency and repository in pom.xml

<dependency>
	<groupId>com.aspose</groupId>
	<artifactId>aspose-words</artifactId>
	<version>20.3</version>
	<classifier>jdk17</classifier>
</dependency>
        
........
<repository>
	<id>AsposeJavaAPI</id>
	<name>Aspose Java API</name>
	<url>https://repository.aspose.com/repo/</url>
</repository>

============= Java code with input and output option ============

public static void main(String[] args) throws Exception {
	License license = new License();
	license.setLicense("C:\\Users\\pprajapati\\Desktop\\9122\\Aspose.Words.lic");
	// with options
	RtfLoadOptions rtfOptions = new RtfLoadOptions();
	rtfOptions.setRecognizeUtf8Text(true);
	
	PdfSaveOptions pdfOptions = new PdfSaveOptions();
	pdfOptions.setCompliance(PdfCompliance.PDF_17);
	
	HtmlSaveOptions htmlOptions = new HtmlSaveOptions(SaveFormat.HTML);
	htmlOptions.setPrettyFormat(true);
	htmlOptions.setExportListLabels(ExportListLabels.BY_HTML_TAGS);
	
	Document doc = new Document("C:\\Users\\pprajapati\\Desktop\\9122\\program\\2_RedBackgroundDB.rtf", rtfOptions);
	doc.save("C:\\Users\\pprajapati\\Desktop\\9122\\program\\outputAspose.pdf", pdfOptions);
	doc.save("C:\\Users\\pprajapati\\Desktop\\9122\\program\\outputAspose.html", htmlOptions);
	System.out.println("done");
}
2

@pprajapati

Please note that Aspose.Words mimics the behavior of MS Word. If you open the RTF in MS Word and convert it to HTML and PDF, you will get the same output.

3

We understand but is there anything wrong in our rtf that aspose not able show background color. Is RTF specification is old or something ? We are right now using temp license to evaluate aspose library fro rtf to html conversion

5

@jshahv

Please copy the RTF content shared in this thread, paste it in notepad and save the document as .rtf. Open the RTF in MS Word. You will notice that there is no background color. Aspose.Words does the same. So, it is expected behavior of Aspose.Words.

6

Can we know which rtf specification aspose word is using to convert rtf to any other doc ?

7

@jshahv

Aspose.Words follows the same specification of MS Word.

8

I found the workaround!
To support the background color, you can replace the \cbN command with \highlightN.

@tahir.manzoor, Please confirm this patch will work :grinning:

9

@Karmadip Yes, replacing the \cbN command with \highlightN will work for both MS Word and Aspose.Words.