PDFShift
PDFShift is an HTML-to-PDF conversion API built on a real headless Chrome rendering engine, meaning any page that renders correctly in Chrome — including JavaScript-rendered single-page apps, modern CSS layouts (flexbox, grid), and web fonts — converts to PDF with high fidelity, without needing a separate print stylesheet in most cases. A URL, raw HTML, or file can be submitted via a simple REST call, with options for page size, margins, headers/footers, and waiting for specific JavaScript conditions before capturing (useful for pages that load data asynchronously).
Because it renders with actual Chrome rather than a specialized print engine, PDFShift is well suited to converting existing web pages or React/Vue-rendered content directly to PDF without redesigning the layout specifically for print — a dashboard, report page, or invoice already built as a web page can typically be converted with minimal adjustment.
A free tier covers a limited number of monthly conversions for development and testing; production usage is billed per conversion on paid plans. For Nigerian SaaS products that already render an invoice or report as a web page and want a "download as PDF" button without building a separate PDF-specific template, PDFShift's Chrome-based rendering gets there with the least amount of extra layout work compared to Prince-XML-based tools like DocRaptor.