How to stop rendering image url present in html content using aspose

I am using below code to convert docx/doc/txt files to image using aspose-words-15.8.0-jdk16.jar

com.aspose.words.Document doc = new com.aspose.words.Document(new ByteArrayInputStream(origData));
ImageSaveOptions saveOptions = new ImageSaveOptions(SaveFormat.JPEG);
saveOptions.setPageCount(1);
saveOptions.setPageIndex(0);
doc.save(outputImage, saveOptions);

if txt file is containing html content with image src tag its trying to render image. this is security issue. i dont want to render image. what changes i need to make from our side ?

You can explicitly specify load format as TXT, in this case HTML tags in your TXT document will not be interpreted:

LoadOptions opt = new LoadOptions();
opt.setLoadFormat(LoadFormat.TEXT);
Document doc = new Document("C:\\Temp\\in.txt", opt);

Also, you can skip loading external resources upon loading document using IResourceLoadingCallback.

LoadOptions opt = new LoadOptions();
opt.setResourceLoadingCallback(new SkipImgCallback());
Document doc = new Document("C:\\Temp\\in.html", opt);

static final class SkipImgCallback implements IResourceLoadingCallback {
    @Override
    public int resourceLoading(final ResourceLoadingArgs args) throws Exception {
        return ResourceLoadingAction.SKIP;
    }
}