Privacy
Nothing is collected,
because nothing is sent.
This is short because there is very little to say. Underleaf is software that runs on your own computer. It has no account, no server of ours, and no analytics.
In practice
What happens to your reading
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Your passages stay on your machine
The library is a single file in the app's own folder. It is never uploaded, and we never see it.
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The app makes no network request
Not for fonts, not for analytics, not for updates. The only outbound request it is capable of is to a model provider, and only if you put a key in a file yourself. Without that key it opens no socket at all.
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Delete means delete
One action removes every book, passage, note, purpose and mark from the machine. There is no copy elsewhere to ask us about, and nothing to request by email.
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Export means you can leave
Markdown, JSON or CSV at any time, with your purposes and marks included.
This website
The page you are reading
This site sets no cookies and runs no analytics or tracking script. It loads two typefaces from Google Fonts, which means Google receives the request for those font files, as it would on any site that uses them. Nothing else leaves this page.
Whoever hosts it will keep ordinary server logs, as every web host does. If that changes, this page changes with it.
Last reviewed 12 November 2026.