Most conversion tools in this category make the same promise and break it in the same place. You upload a PDF, you get a Word document, and it looks nearly right until you scroll to the page with the table on it — at which point the columns have collapsed, a heading has drifted into the middle of a paragraph, and half an hour of tidying is ahead of you.
That happens for a structural reason rather than a quality one. A PDF is a set of instructions about where marks go on a page: this glyph at this coordinate, in this font, at this size. A Word document is a description of content that reflows: this is a heading, this is a paragraph, this is a table with four columns. Converting a PDF to Word means inferring all of that structure from positions alone, because the structure was never recorded in the first place. It is genuinely a guess, and the guess is good for simple prose and poor for anything laid out by hand.
So the formats here are labelled before you choose them, and only the exact ones are on the counter today. Images are exact — a page is already a picture, so turning it into one loses nothing. Plain text is exact for what it claims: every word that was in the file, with no layout at all. Word export is on its way as a labelled server feature — clearly marked, and only ever described as approximate, with the reason stated in one line and a specific warning when the document is full of the things that break.
And when a conversion is the wrong answer, this says so. If the reason you want a Word file is to change one sentence, editing the PDF directly does that without the round trip and without the layout damage — which is a worse outcome for our conversion numbers and a better one for you.
Scanned documents are the other honest case. A scan contains no text, only a photograph of it, so converting one to text would hand you an empty file. The tool says that, and points at making the document searchable first, rather than letting an empty download look like a success.
Today’s formats run entirely in this browser — nothing is uploaded, your original is untouched, and there is no signup, no queue and no cap.