About & security
PDF data security and processing
Learn how 66PDF handles uploaded PDFs, extracted text, AI summaries, and account data, plus the security boundaries to consider when using an online PDF tool.
Before processing a document online, confirm that you have permission to upload it and consider its sensitivity. 66PDF is a reading aid, not a replacement for an approved internal security or confidentiality system.
01
What uploaded content is used for
An uploaded PDF may be sent to storage, text extraction, and AI generation services to complete a summary or question request. File content or extracted text is used during processing.
02
What data may be retained
Summaries created while signed in are associated with your account so you can view and manage history. Guest trials, account data, and summary history may follow different flows; refer to the current product information.
03
Security steps before use
Remove unnecessary personal information, avoid unauthorized confidential material, sign out on shared devices, and delete history items when you no longer need them.
04
The security boundary of an online service
No online service can promise absolute security. For material restricted by law, contract, or organizational policy, use an approved internal processing environment first.
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