Mixkit - High-quality stock videos that are completely free.
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
Pexels - Find the best free stock images about Browser Home Page. Download all photos and use them even for commercial projects.
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request
Death to Stock Photo - Free monthly photo packs for creatives
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.