One Click Test - Tool for quickly testing your design layout in one click.
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request
W3C Mobile Checker - Make websites work better on mobile devices
CraftMyPDF - Auto-generate PDFs with a drag&drop editor and a simple API
Flexbox Grid - Grid based on CSS3 flexbox
Magicul.io - Convert between Adobe XD, Figma, PDF, Illustrator, Sketch and more with 1 click