Not able to add PNG image into RTF

[StefanPavlik]

Summary:
It is not possible to add PNG image into RTF document.
Following exception is thrown:

com.lowagie.text.DocumentException: Only BMP, PNG, WMF, GIF and JPEG images are supported by the RTF Writer
	at com.lowagie.text.rtf.graphic.RtfImage.<init>(RtfImage.java:179)
	at com.lowagie.text.rtf.RtfMapper.mapElement(RtfMapper.java:168)
	at com.lowagie.text.rtf.RtfWriter2.add(RtfWriter2.java:186)
	at com.lowagie.text.Document.add(Document.java:302)

Steps to reproduce:
The problem can be reproduce by adding following code into CreateSimpleRTFDocumentTest.java file:

    document.add(new Paragraph("pngnow.png"));
    Image png = Image.getInstance("pngnow.png");
    document.add(png);

The "pngnow.png" file is taken from LibrePDF/OpenPDF source code.

Note: Adding JPG file works without problems.

Edited:
It seems that problem was introduced by this commit in OpenPDF repository. The class PngImage.java (and others) was removed. As a result the method setOriginalType(Image.ORIGINAL_PNG) is now not called at all.

Edit (August 2025):
I am not using this library anymore - I am not able to verify the current status.
Feel free to close the issue.

[andreasrosdal]

Thank you for reporting this. Pull requests welcome.

[fridrich]

Is this still broken even with 2.0.0?

[StefanPavlik]

Is this still broken even with 2.0.0?

I am not using this library anymore - I am not able to verify the current status.
Feel free to close the issue.

[olivierDelierre]

@fridrich I'll try it out, I fixed it within OpenPDF since the problem was coming from here. Keep you posted.