To follow on with this, I've used https://pdfcrowd.com/ too. - Source: Reddit / about 2 months ago
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request
Paperplane - High quality HTML to PDF conversion API for developers.
Document Cyborg - Easily save a web page as a document (PDF, WORD, EPUB, ODT, RTF or Text)
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.
Api2Pdf - PDF Generation API, powered by AWS Lambda. HTML to PDF | URL to PDF | Office Doc to PDF | Merge PDFs . Supports wkhtmltopdf, Headless Chrome, and LibreOffice. No rate limits and no file size limits.
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