PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request
html2pdf.app - HTML to PDF conversion API
Tcpdf - TCPDF: Open Source PHP Class for generating PDF documents
PlaceholderLogo.com - Free professional placeholder logos for your projects
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.
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.