Send Dopppel a file and ask about it
Tap the paperclip or drag a file in. Dopppel reads pictures, PDFs, Word files, spreadsheets and plain text — even a photo you take — and answers questions about what is inside.
2 min readWorking with your stuffUpdated 14 September 2026
What it is
You do not have to retype a thing to ask about it. Send the file and ask.
Dopppel reads pictures, PDFs, Word files and spreadsheets — the newer kind, ending in .docx and .xlsx — and plain text files. A photo works too: take a picture of a receipt, a page or a sign and ask about it. Then you can ask it anything about what is inside — what it says, what it means, what the numbers add up to.
It keeps the file in mind for the rest of the chat. You can talk about ten other things and then come back to it, and Dopppel still knows what was in it.
How to use it
- 1Tap the paperclip in the chat, or drag the file straight in.
- 2Ask your question about it in plain words.
- 3Keep asking. The file stays part of the chat, so you can come back to it later.
- 4Tap the file in the chat any time to download it back to your computer.
Questions
What files can Dopppel read?
Pictures, PDFs, Word files ending in .docx, spreadsheets ending in .xlsx, and plain text files. Older .doc and .xls files do not go through, and neither does a slideshow file.
Can it read a PDF?
Yes. Send it and ask your question about what is inside.
Will it remember the file later in the chat?
Yes. It answers from what is inside even when the chat has moved on to other things.
What about a very long file?
Dopppel reads the first part of it, and its answer says so. It is worth asking whether it got to the part you mean, because a very long file is cut off at the same place every time.
Can I download the file again?
Yes. Tap the file in the chat and it comes back down to your phone or computer.
Can I take a picture of something and send it?
Yes. A photo of a receipt, a page or a sign works. Dopppel looks at the picture and answers from what it sees, so you do not have to type it out.
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