PDFShift
DocRaptor
pdflayer
PDFCrowd
cloudlayer.io
HTML PDF API
Tcpdf
PDF my URL
PDFChef Merge PDF
DocuPUB
PDF Joiner
Ultra PDF Merger
PDFill
7-PDF Split & Merge
CleverPDF
PDFMate Free PDF Merger
A powerful, fast and high-fidelity HTML to PDF conversion API.
Code examples and package ready for Node, Python and PHP developers.
Advanced features are available, including watermarking and encryption!
PDFShift PDFChef Merge PDFDocRaptor - 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
DocuPUB - DocuPUB is an online file converter, file merger, file compressor, and file resizing tool.
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.
PDF Joiner - This online tool allows you to join several PDF documents into a single file, free of charge.
PDFCrowd - Pdfcrowd is a Web/HTML to PDF online service. Convert HTML to PDF online in the browser or in your PHP, Python, Ruby, .NET, Java apps via the REST API.
Ultra PDF Merger - Ultra PDF Merger is a freeware PDF utility that joins your PDF files, or part of them, together.