html2pdf.app - HTML to PDF conversion API
pdflayer - Free, powerful HTML to PDF API supporting both URL and raw HTML conversion. Unlimited document size, lightning-fast and compatible PHP, Python, Ruby, etc.
Rolla - Rolla is a set of online apps that help users track, compete, and have fun while working out.
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request
PDFtoJPG.in - Convert PDF to JPG free online. You can extract each page from your PDF into a JPG file or extract all of your PDF pages into a JPG image.
Tcpdf - TCPDF: Open Source PHP Class for generating PDF documents