PDF to Text - Free bulk conversion of PDF documents to plain text files, which can be opened by any text editor.
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.
Tesseract - Tesseract is an optical character recognition engine for various operating systems
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
Cisdem PDFtoTextConverter - How to convert native or scanned PDF into nicely formatted Text on Mac? Here we list the best solution for each case, also you can refer to the alternatives to fix this problem.
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request