For third party solutions there are lots of options. Just to name a few…
- https://cloudlayer.io
- https://www.api2pdf.com
- https://www.printfriendly.com
- https://pdfshift.io
- http://pdfmyurl.com/html-to-pdf-api
- https://www.html2pdfrocket.com/
- https://pdflayer.com/
- http://pdfcrowd.com/
- http://www.pdfonline.com/convert-pdf/
- http://docraptor.com
- https://restpack.io/html2pdf
- https://products.aspose.cloud/pdf
- https://pdfmage.org/