Need to convert HTML file to PDS format

To resolve the issue with missing images and text color in Aspose.Pdf, ensure that the image paths in your HTML file are correctly referenced and that the CSS styles for text color are properly defined. Make sure that images are accessible from the specified path and that CSS styles are appropriately applied in your HTML.

A solution you can try which will keep the image is to convert Html to PDF using the DocumentConverter. Here is some code that you can try:
 

using (DocumentConverter documentConverter = new DocumentConverter())         
{         
   var input = @"C:\Input\input.html"); 
   var output = @"C:\Output\output.pdf");         
   var jobData = DocumentConverterJobs.CreateJobData(input, output, DocumentFormat.Pdf);         
   jobData.JobName = "Convert to PDF";         
        
   var documentWriter = new DocumentWriter();         
   documentConverter.SetDocumentWriterInstance(documentWriter);         
        
   var renderingEngine = new AnnWinFormsRenderingEngine();         
   documentConverter.SetAnnRenderingEngineInstance(renderingEngine);         
        
   var job = documentConverter.Jobs.CreateJob(jobData);         
   documentConverter.Jobs.RunJob(job);         
}    

https://www.leadtools.com/help/sdk/tutorials/dotnet-console-convert-files-with-the-document-converter.html

You may try this approach:

https://www.e-iceblue.com/Tutorials/Spire.PDF/Spire.PDF-Program-Guide/Convert-HTML-to-PDF-Customize-HTML-to-PDF-Conversion-by-Yourself.html