Is there a way to convert PDF to PDF/A using pure C# (if Telerik cannot support it)

Question

I'm working on a project, Runs on asp.net MVC which uses Telerik Report designer to create PDF reports. Now I'm seeking for a way to create PDF/A (perhaps version 3) since Telerik does not support this format yet. I know there are some libraries they support this format. however, I'm looking for a solution to make it using pure C# (and/or scripts) or free trustable libraries.

Thanks in advance.

Answer 1

I found the solution using Telerik and I wanted to share it maybe it was useful for others. I just needed to convert the fileObject to stream and then, using these lines, I am able to apply settings (e.g. PDF/A) on my stream. here's the code:

private Stream PdfToPdfa(Stream input)
        {
            PdfFormatProvider provider = new PdfFormatProvider();
            PdfExportSettings settings = new PdfExportSettings();
            settings.ComplianceLevel = PdfComplianceLevel.PdfA3B;
            provider.ExportSettings = settings;
            RadFixedDocument document = provider.Import(input);

            Stream output = new MemoryStream();
            provider.Export(document, output);

            return output;
        } 

The result on "PDF VALIDATOR ONLINE TOOL":

checking the pdfa validity

Good luck :)