What happens when you upload a study or report

A useful tool should read the visible details on a photo or the text in a document, then say what each value measures. It should also compare a label against the setup you described, not just repeat the label. A weaker tool will act as if the file proves identity, purity, or a diagnosis. Test that line before you rely on an upload.

Uploading preserves layout you might otherwise mistype, such as a table of lab values or a handwritten note. But the file is raw material, not a source. A tool that cites its answer can show you where each claim came from. A summary without citations leaves you with nothing to check, no matter how clean the upload looks.

ChatPEP accepts photos in three common image formats (PNG, JPEG, or WebP) up to 10 MB, and documents in plain text, Markdown (a simple text-formatting language), or JSON (a structured data format) up to 2 MB ¹. It does not accept PDF, Word, spreadsheet, or HEIC files ¹. For a PDF or Word document, attach a screenshot of the page or paste the relevant text into your message ¹. ChatPEP reads only the first part of a very long document, so paste the section you care about if it sits deeper in the file ¹.

The number of files you can attach depends on your plan. The daily count covers the past 24 hours, not a calendar day, and a file counts as soon as it starts uploading ¹.

ChatPEP stores the file privately, uses it to answer your message, and deletes it when you delete the chat, or 365 days after you delete your account ². A photo is sent to the AI model provider that writes the answer, and a document's text is included with your message ². ChatPEP reviews chats and attachments to improve the product and keep the service safe ³. If you share the chat, the contents of attached files are left out of the shared copy, and readers only see that a file was attached ².

A little setup makes the answer sharper.

1. Attach one clear photo or text document. For a PDF or Word file, use a screenshot or paste the section instead ¹.
2. Type a question that says what you want: what a marker measures, how a protocol matches the label, or what the research says about a value.
3. Ask a follow-up in the same chat if the first answer misses the section you care about. ChatPEP follows the conversation, so a short follow-up can pick up where the last answer left off ⁴.
4. Open the citations before you rely on the answer. A summary is not a source.

• If you want to attach PDF, Word, spreadsheet, or HEIC files directly, this is not for you because ChatPEP accepts only the image and document formats listed above ¹.
• If you want an AI to diagnose you from a lab report, this is not for you because ChatPEP can explain what a value measures but cannot diagnose you ¹.
• If you want file contents included when you share a chat, this is not for you because shared links leave attached file contents out ².
• If you want the file kept after you delete the chat or account, this is not for you because ChatPEP deletes files when you delete the chat, or 365 days after you delete your account ².