What RTF is good for
Rich Text Format is an old but very widely supported document format. Almost every word processor can open it, including WordPad, TextEdit, LibreOffice, and older versions of Word, and many systems that cannot handle .docx will accept RTF. Converting a PDF to RTF gives you editable text in a format that opens nearly anywhere.
What the conversion produces
PDF Studio reads the text of each page together with its size and font, groups it into lines, and writes an RTF file with a font table, page breaks between pages, and paragraphs. Larger text is detected as a heading and given bold or centered styling. Fonts in the PDF are mapped to common fonts that exist on most computers. Accented letters, curly quotes, and other non-ASCII characters are written as proper Unicode so they display correctly.
The conversion runs in your browser, so the PDF is not uploaded.
What is not included
The output is text-focused. Images, drawings, tables as grids, columns, headers and footers as such, and the exact page layout are not recreated, so a complex document needs tidying after conversion. Scanned PDFs contain no text, so run OCR PDF first.
RTF or Word?
If your software supports .docx, PDF to Word is usually the better choice, because it tries harder to keep tables and layout. Choose RTF when you need maximum compatibility with older or simpler programs, or when you want a lightweight text document with basic structure.