Chat with PDF (Ask Questions About Your Documents)

About the Chat with PDF (Ask Questions About Your Documents)

Open up to ten files — PDFs, Word, PowerPoint, Excel or CSV, EPUB books, web pages, e-mails, text files or photos of pages — and ask questions about them in plain words: “What is the notice period?”, “Which risks does the report name?”, “What did the minutes decide about the budget?”. Every answer quotes your files and cites the page (or slide, sheet or chapter) each sentence comes from; select a citation and the passage opens beside the answer with the words of your question marked.

When your files don’t contain the answer, the page says Not found in your files instead of guessing. Each answer is checked sentence by sentence against the passages it cites before you see it, and a sentence with a figure, date or amount that isn’t in those passages is taken out. Your files are read and searched on your own device; the answers are written by your browser’s built-in AI, by a language model on your device, or — with a pass, after you agree — by MySmartCoPilot’s cloud AI, which then gets your question and a few passages only. Without a pass you get the free preview: the first half of each answer.

Common uses

• Finding a clause, a deadline or a figure in a long contract, policy or tender without reading it all.
• Revising from lecture notes, slides and a textbook chapter at once.
• Checking what a report actually says before quoting it, with the page to cite.
• Asking a set of meeting minutes what was decided and who took which action.

How the answers stay with your files

• Only your passages. A question first goes to a search of your files (keywords on the device, plus meaning with Better matching). Only the passages it finds are given to the AI, as data, with the instruction to answer from them alone and to cite each one.
• Checked before you see them. Every sentence of an answer must be largely made of words of the passages it cites; a sentence that isn’t, or that adds a number, date or amount the passages don’t have, is removed. If nothing is left, the page says Not found in your files.
• Hidden text is never read. Text that a reader of the file can’t see — invisible, tiny, white-on-white, off-page or hidden by the file — is left out when the file is read and listed on the file’s card, so instructions hidden in a document can’t steer the answers.
• No outside knowledge. The AI gets no web search, no links and no memory of other conversations.

Where the answers are written

• Your browser’s built-in AI, where it has one (some desktop browsers): nothing is downloaded by this site.
• An on-device language model (about 1 GB on computers, about 350 MB on phones), downloaded once from MySmartCoPilot after you agree. It needs a recent browser with WebGPU.
• MySmartCoPilot cloud, with a pass, after a dialog that shows exactly what is sent: your question and the passages it needs, with e-mail addresses, phone numbers and similar details masked. Your files themselves are never uploaded.
• Without AI: the sentences of your files that match the question best, with their pages.

Answers are written in the language of your files, because each sentence is checked word for word against them.

What the page tells you about each file

Each file card shows its format, pages (or slides, sheets, chapters) and words, notes such as “pages 3 and 4 are scans without text” or “running headers and page numbers were left out”, and what hidden text was found, with a short sample. Files that can’t be read — a damaged file, an unsupported format, a DRM-protected e-book — say why.

Advice questions

The page answers what your files say. A question that asks for personal medical, legal or financial advice gets no AI answer: it shows where your files mention the topic and suggests asking a qualified professional. Answers are general information, not professional advice.

Limitations

• Up to 10 files and about 500 pages (or slides, sheets, chapters) at once; 50 MB per file and 150 MB in all.
• Tables and charts are read as text, and text inside pictures only with OCR, which can misread names and numbers. OCR reads up to 40 pages per run and is slow on phones.
• The search finds passages that share words with the question; questions in other words or another language work better with Better matching.
• Small on-device models can miss nuance in long or technical passages; the citations are there to check every answer.
• Files and the conversation stay only in this tab: reloading or closing the page clears them.
• Password-protected PDFs open with their password; DRM-protected e-books can’t be read.

Privacy

Your files are read and searched on your device and are never uploaded. Answers are written by your browser’s built-in AI where it has one, or by a language model downloaded once from MySmartCoPilot after you agree (the size is shown first). Only if you choose MySmartCoPilot cloud (with a pass) are your question and the few passages it needs sent to MySmartCoPilot’s cloud AI; a dialog shows exactly what is sent first.