PDFCrowd - Pdfcrowd is a Web/HTML to PDF online service. Convert HTML to PDF online in the browser or in your PHP, Python, Ruby, .NET, Java apps via the REST API.
LayerX - An intuitive app to display transparent images on screen.
DocRaptor - As the only API powered by the Prince HTML-to-PDF engine, DocRaptor provides the best support for complex PDFs with powerful support for headers, page breaks, page numbers, flexbox, watermarks, accessible PDFs, and much more
PixelPerfect - Allows developers to put a semi-transparent image overlay over the top of the developed HTML and...
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request
Osiva - Osiva" is an acronym that stands for "Overly Simple Image Viewing