Based on our record, PDFCrowd seems to be more popular. It has been mentiond 1 time since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
To follow on with this, I've used https://pdfcrowd.com/ too. Source: about 3 years ago
Fattmerchant - Subscription-based credit card payment processing platform
DocRaptor - As the only API powered by the Prince HTML-to-PDF engine, DocRaptor provides the best support for complex PDFs with powerful support for headers, page breaks, page numbers, flexbox, watermarks, accessible PDFs, and much more
PaymentCloud - PaymentCloud is a feature-rich Credit Card Processing solution that is created to help retailer and e-Commerce businesses to streamline all their payment operations.
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request
Helcim - Helcim is a feature-rich online solution that facilitates payment procedures by enabling a range of industries as well as businesses to accommodate several payment options.
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.