How Paperswift works
- 1Open your Excel or CSV files
You can open several at once, including Excel workbooks with more than one sheet.
- 2Everything runs in your browser
Your files are opened and processed on your own computer, even a 50 MB CSV.
- 3AI works out the logic
We only use your column names and types — never the values. That is enough to build the query behind your table and chart. None of your data is used to train AI.
- 4Save it as an insight
Save the logic once, then re-run the exact same logic next time you have new data.
Your data stays on your computer
Most tools ask you to upload your spreadsheet to their servers before you can do anything with it. Paperswift works the other way around. Your file is opened and analysed in your own browser, so the rows themselves never travel to us.
Subprocessors, encryption, and what each one can see are all on the privacy & security page.
Common questions
Do I have to upload my data?
No. Your file is opened inside your own browser and stays there. If you choose to ask a question in plain English, the only thing the AI ever uses is your column names and types — never the values.
What happens when I ask a question?
An AI model works out the right query using only your column names and whether each column holds text, numbers, or dates — never the values in your rows. The query then runs on your file, on your computer.
What files does it work with?
Excel files and any CSV export. Paperswift is built for the everyday exports from Stripe, HubSpot, Shopify, and QuickBooks — open one and start asking questions, with nothing to install.
Do I need to know SQL or set anything up?
No. Ask in plain English, or click to chart and filter. There is nothing to install and no pipeline to build before you get an answer.
Is it safe to use with financial data?
Yes. The safety comes from the design rather than a policy: your Stripe, QuickBooks, or bank exports are opened and analysed inside your own browser, so the rows never reach our servers. Asking a question in plain English uses only your column names and types — never the values.
How is this different from pasting my spreadsheet into ChatGPT?
ChatGPT reads your file by receiving a copy of it, which puts the values themselves on someone else's servers. Paperswift keeps the file in your browser, and the AI uses only your column names and types — never the values. Your question becomes a query that runs over every row on your own computer, so answers are computed, not estimated.
Compare ChatGPT, Claude, and Gemini for spreadsheet analysis
Try it on your own export
Start free, drop in an Excel file or CSV, and get your first chart in seconds. Your file stays in your browser the whole time.
Last updated · by Stefan