Can BuildVu convert files in memory?
Yes. The PDF to SVG and PDF to HTML converters can both accept a PDF file as a byte[] when running from Java.
//SVG
PDFtoSVGConverter converter = new PDFtoSVGConverter(pdfFileAsByte, outputDir, conversionOptions, viewerOptions);
//HTML
PDFtoHTML5Converter converter = new PDFtoHTML5Converter(pdfFileAsByte, outputDir, conversionOptions, viewerOptions);
Output can then be configured to stream to memory.