Drop a PDF, download its words as a plain .txt file or as Markdown. Ordinary PDFs finish in a moment; scanned ones take longer, because they are read rather than copied.
Two kinds of PDF, one tool. A PDF made by software carries its text inside the file, and that text is copied out exactly: instant, and accurate to the character. A scanned PDF is photographs of pages, and the tool reads each page with character recognition instead. It checks page by page and picks the right route on its own; a report with a scanned appendix gets each treatment where it belongs.
What recognition can do. Clean printed pages read well. Phone photos of documents read reasonably when the light was decent. Handwriting mostly does not read.
The reading engine fetches on first use - about 17MB, kept by your browser afterwards - and only when a scanned page needs it. Copying text out of ordinary PDFs downloads nothing extra.
Two formats, chosen before you drop the file. Plain text gives you the words, with paragraphs joined back up and pages marked. PDF to Markdown keeps what the layout meant: headings as headings, tables fenced with their columns still aligned, and a line the page held apart staying apart rather than dissolving into the paragraph above it.
For pages as pictures instead, PDF to JPG is the other direction.
The document is read on your device and is not sent anywhere. That is the point when it is a contract, a letter or a bank statement.