01 / the file
Not saved by us
We discard the file the moment its text has been pulled out. There is no library of documents you have uploaded before. What happens to a request at Anthropic is set by its terms, linked on subprocessors.
Quiz from a document · no writing required
The document is already the quiz.
You hand it over. We read it, not you.
A PDF, a Word file, a spreadsheet or a slide deck goes in, and a set of questions comes out the other side. Nobody writes anything by hand.
Start a game →No account · File not stored · A minute or two
What you can hand over
Plain text, a Word document, an Excel sheet, a PowerPoint deck, a PDF, or an image (PNG, JPEG or WebP), up to 10 MB. How the file is read depends on its type, and the difference matters.
Word, Excel, PowerPoint and plain text are read on our server, in memory. Only the text pulled out of them goes any further.
A PDF or an image is sent to our model provider, Anthropic, which writes out the text in it. Before it leaves our server, we remove what is stored in the file but not shown on it. From a photo: its location, camera details, date and any caption or author fields (EXIF, XMP, IPTC, and the text fields of a PNG). From a PDF: its title, author, subject, keywords, the program that made it, its XMP metadata, and the same details in JPEG photos placed inside it. What you can see on the page is sent as it is — a name in the text, a face in a photo. Comments in a PDF, with the name of whoever wrote them, and files attached to a PDF stay in. A locked PDF, or one our tool cannot rewrite, is sent unchanged. The file name is never sent.
Either way, we never write the file to disk or to a log. The extract is cut at 12 000 characters, and it is what Anthropic then writes the questions from. Anthropic runs outside Norway East, where the rest of the service runs — see privacy and subprocessors.
Before anything is generated, you see the text that was pulled out of your file. That is the moment to notice if a document handed over more than you meant — a hidden sheet, a speaker note, a caption nobody proofread. And before anyone plays, you read every question the same way you would read one typed from scratch. Nothing reaches the room that you have not already seen.
None of this needs an account. Not for you, and not for anyone playing.
02 / the set
Not saved either
The questions it produces live for the session and then disappear with it. Want the same quiz next week — hand over the document again.
03 / images inside
Not described
In a Word, Excel or PowerPoint file, pictures are not read at all — only the text. In a PDF or an image, Anthropic writes out text it can see, but it does not describe what a picture shows.
How accurate is a quiz made from a document
Questions written from a file can be wrong. A dense technical spreadsheet or a poorly scanned PDF can be misread, and a question can say something the source does not. That is why the review step is not optional: you read every question before anyone plays and drop the ones that are wrong, and you are the one person who knows whether a question matches the source.
When it says no
A new game starts as a room with children in it. There, a file goes through only when you also tick that it is teaching material, such as pages from a textbook or test instructions, with no names, pictures of people or other personal data. A worksheet a pupil has filled in, or a child's photo, is exactly the kind of document we do not want to process. Typing a topic or pasting text works in every room.
Before a file goes, you tick that the content is yours to share and holds no personal data about other people. A file over 10 MB or a format we do not recognise is turned away before it is read at all.
See the whole flow, or the two other ways to start a round, on klapp quiz. Playing one is /join and a six-digit code away.