There's a moment most students hit in week three of a hard class. The textbook is 1,400 pages. The lecture handouts are 80 PDFs deep in your downloads folder. There's a problem set due Thursday and a research paper assigned Monday. You can't read all of it. You probably won't read most of it. And nothing you've used so far does anything useful with the stack.
Fennie's document upload is the part of the system that tries to fix that. Not by reading it for you. By making it possible to actually use the material instead of staring at it.
Here's how it works, what it's good at, and where it falls down.
What "uploading a document" actually does
When you upload a PDF to Fennie, three things happen.
First, it's parsed and indexed against the course you attached it to. So if you drop the Robbins pathology chapter on inflammation into your Pathology course, Fennie now knows that material is part of that course's universe. Your daily plan can pull from it. Chat can reference it. Quizzes can be generated from it.
Second, it's split into structured pieces. Sections, subsections, figures, tables. This is why structure matters so much (more on that below). A well-formatted textbook chapter becomes navigable. A scanned image of someone's handwritten notes becomes a wall.
Third, the document becomes a first-class object you can chat with, quiz from, and flashcard against. Two clicks, in most cases.
The point is not that Fennie has read your textbook. The point is that the textbook is now connected to the rest of the system — the calendar, the daily plan, Memory.
Three real scenarios
Let me walk through what this looks like for actual students.
The pre-med uploading a Robbins chapter
You're an MS1, or a post-bacc, or an undergrad pre-med doing a heavy bio semester. The pathology chapter on inflammation is 60 pages. You have an exam in nine days.
Drop the chapter into your Pathology course. Add the exam to your calendar.
The next morning, your plan looks something like:
- Read sections 2.1–2.3 (acute inflammation, vascular changes, leukocyte recruitment) — 25 min
- Quiz: cellular events of acute inflammation — 8 min
- Flashcards: chemical mediators (histamine, prostaglandins, leukotrienes) — 10 min
Three days out, the plan shifts. More quizzes. Cumulative flashcards. Chat suggestions like "the chronic inflammation section keeps tripping you up — want a walkthrough?"
The chapter is no longer a thing you have to read in one sitting. It's distributed across nine days, shaped around what you already know.
The law student uploading a casebook section
You have a Civil Procedure exam in three weeks. Your professor assigned 80 pages from the casebook covering personal jurisdiction. The cases are dense and the holdings are buried.
Upload the PDF. Tag it to your Civ Pro course.
Now chat is your case-briefing partner. Not a brief generator — it won't write your briefs. But you can ask "what's the key holding in International Shoe and where in the text does it actually appear?" and it'll point you to the page and section, then ask you what you think the reasoning is.
Quizzes from a casebook tend to be issue-spotters. Flashcards tend to be tests on rule statements and case names. You can run cumulative quizzes that mix this section with the personal jurisdiction material from two weeks ago. That kind of cumulative practice is how the bar gets passed, and most students don't do it because making the questions is annoying. Fennie makes them.
The engineering student uploading a problem set PDF
You have a Statics problem set with twelve problems on truss analysis. You've done four. You're stuck on the fifth.
Upload the PS.
This is where chat shines. You can paste the problem you're working on, and chat won't solve it. It'll ask what method you're using (method of joints? method of sections?), what equations you've written down, and where the algebra is breaking. Most students realize their issue is sign convention or geometry, not the underlying physics. Chat tends to surface that without telling you the answer.
The PS itself becomes a flashcard source for the procedural steps — "for a determinate truss, first check…" — and a quiz source for the conceptual questions. The week before the test, those quizzes show back up.
What works and what doesn't
The honest version: not every PDF is going to give you the same experience.
Works well
Textbooks with clear chapter structure. Headings, subheadings, numbered sections, an index. The parser handles these cleanly and the resulting quizzes and flashcards are sharp.
Lecture slides exported as PDFs. Especially if your professor uses titled slides and bullet points. Fennie can pick out terms, definitions, and examples.
Problem sets typed in LaTeX or Word. The math gets parsed reasonably well. Fennie can read equations and generate practice variants.
Research papers with abstracts and section headings. Especially in fields like CS, bio, econ — anywhere the structure is conventional. You can chat with a paper, ask for plain-language explanations of figures, and get summaries at your reading level.
Casebook chapters from major publishers. Most casebooks have predictable structure (case → notes → problems) and Fennie reads them well.
Works poorly
Handwritten scans. Even with OCR, handwriting is rough. If your only copy of a chapter is a phone photo of someone else's notes, you'll get inconsistent results. The fix: get the original PDF, or transcribe the key parts yourself.
Badly OCRd PDFs. Some textbook PDFs floating around the internet were OCRd badly five years ago. You can spot these: copy-paste a sentence and watch it come out as gibberish. If it's gibberish to you, it's gibberish to Fennie. Try a cleaner copy if you can find one.
Two-column layouts with embedded images. Some older textbooks and journal articles have layouts that confuse parsers. Fennie does its best but sometimes mixes column order. If a chapter feels off, check the source PDF.
Pure equation dumps. A PDF that's nothing but inline math with no surrounding text doesn't give Fennie much to work with. Pair it with a note explaining what the equations represent.
The two-click flows
Once a document is in the system, you can do most things in two clicks from the document view.
Generate a quiz. Click Quiz, pick a section, done. Fennie pulls 8–12 questions from that section. You can add it to tomorrow's plan or take it now.
Generate a flashcard deck. Click Flashcards, pick a section, done. The deck enters your spaced rotation automatically. Cards you find easy push out further. Cards you miss come back.
Generate a summary. Click Summary, pick your reading level (skim, study, deep). Useful for that "I have to read this chapter tonight but I won't" situation. The skim summary is for surface-level prep. The study summary is what you'd want before an exam. The deep summary is closer to the chapter itself.
Chat in context. Open chat from the document view and your questions are scoped to that PDF. Ask "where does the textbook define res ipsa loquitur" and you'll get a citation, not a generic Wikipedia paraphrase.
How to actually use this in a term
The pattern that works for most students:
Week one of the course. Upload the syllabus. Upload any chapter that's assigned for the first two weeks. That's enough.
Each week. Upload that week's lectures and any assigned readings. It takes about three minutes. Tag them to the right course. Move on.
Before a test. Open the course, look at the documents you've uploaded. Generate cumulative quizzes that pull across multiple chapters. Trust the flashcards already in your daily plan — they've been showing up for weeks.
The mistake to avoid: dumping every PDF you have on day one. The system doesn't get smarter with volume. It gets smarter with the documents you're actually using and having Fennie observe how you're doing on the related material. Upload the textbook. Use the textbook. The rest takes care of itself.
A note on copyright and how we handle your uploads
Quick honest paragraph because students ask. Documents you upload are yours. They go into your account, they're used to make your study experience work, and they aren't shared with anyone else. We don't train external models on your textbooks. If you delete a document, it's gone.
If you're uploading something that isn't yours legally — a chapter scanned from a friend's textbook, say — that's between you and your school's policies. Fennie doesn't police that. We just want to be straight that "you uploaded it" doesn't change "your school has its own rules."
What it isn't
A search engine. If you want to look up a fact, search the web.
A summarizer that replaces reading. The summary tool exists for triage — figuring out what's worth reading deeply. It's not a substitute for engaging with the material when the material matters.
A way to generate finished assignments. The chat won't write your case brief, your lab report, or your literary analysis. It'll help you do those things. It won't do them.
The first time you upload a textbook chapter and watch it become tomorrow's quiz, the system clicks. You stop thinking about your PDFs as a backlog and start thinking about them as material your study plan is already pulling from. That's the goal.
Try uploading your first PDF — Start with Fennie free.