What technique can be used to obtain the content of a PDF document?

The technique of using screen scraping and the read PDF function is particularly well-suited for extracting content from PDF documents because it leverages specialized methods designed to handle the unique structure of PDFs. Unlike plain text documents, PDFs often contain formatted text, images, and complex layouts that can make extraction challenging.

By using the read PDF capability within RPA tools, the software directly interprets the PDF's data structure, allowing for accurate extraction of textual content, tables, and other elements formatted within the document. Screen scraping can complement this by capturing text from sections of the PDF that may not be interpretable directly as text, especially if the PDF contains scanned images or other graphical representations of text.

Other techniques listed may not specifically address the needs of PDF extraction. For example, reading a text document is suitable for standard text files but does not accommodate the complexities associated with PDFs. Image recognition deals more with interpreting visual data rather than textual content in structured documents. Document translation is focused on changing the language of the text rather than the extraction process itself. Hence, the chosen answer recognizes the comprehensive approach necessary for effectively handling PDF data extraction.