## The Problem With Reading Textbooks

You've read the chapter three times. You've highlighted every other sentence. You feel prepared. Then the exam arrives, and you blank on half the questions.

Sound familiar? That's because **reading is not studying**. Cognitive science has consistently shown that **active recall** — testing yourself on material — is 2–3x more effective than re-reading.

The best way to study a textbook? Turn it into a quiz.

## How to Generate Quizzes From Any PDF

### Step 1: Upload Your PDF

Go to [Butterfast](/content/site-root.html) and click **"Create New"**. Select **PDF** as your source type and upload your file. Butterfast supports textbooks, lecture slides, research papers — any PDF up to 10MB.

The AI extracts all text content, chunks it intelligently, and prepares it for question generation.

### Step 2: Select "Quiz" and Customize

Choose **Quiz** as your output type. Customize your quiz:

- **Number of questions** — 10, 20, or 50
- **Question type** — multiple choice (4 options per question)
- **Difficulty** — beginner, intermediate, or advanced
- **Language** — generate quizzes in your preferred language

### Step 3: Take the Quiz and Review

Each generated question includes:

- A clear, well-worded **question** based on key concepts
- **4 answer options** (1 correct, 3 plausible distractors)
- A detailed **explanation** for the correct answer
- **Source context** from the original PDF

## Why AI-Generated Quizzes Work

### The Testing Effect

Research from cognitive psychology shows that the act of retrieving information strengthens memory more than re-studying. This is called the **testing effect** or **retrieval practice**.

A landmark 2006 study by Roediger & Karpicke found that students who tested themselves retained **80% more** information after one week compared to students who simply re-read the material.

### Immediate Feedback

Each Butterfast quiz question comes with an explanation. Getting immediate feedback on wrong answers is critical for learning — it prevents misconceptions from solidifying.

### Spaced Practice

Take the quiz once today, then again in 3 days, then again in a week. This **spaced practice** approach dramatically improves long-term retention.

## What Types of PDFs Work Best?

| PDF Type                          | Quality | Notes                                                             |
|-----------------------------------|---------|-------------------------------------------------------------------|
| Textbook chapters                 | ⭐⭐⭐⭐⭐ | Best results — structured content with clear concepts             |
| Lecture slides                    | ⭐⭐⭐⭐  | Great, especially with speaker notes                              |
| Research papers                   | ⭐⭐⭐⭐  | Works well for methodology and findings                           |
| Handwritten notes (scanned)      | ⭐⭐   | Depends on scan quality                                           |
| Image-heavy PDFs                  | ⭐⭐   | AI focuses on text content                                        |

## Earn BXP While You Quiz

Butterfast gamifies your study sessions:

- **Generate a quiz** → +15 BXP
- **Complete a quiz** → +15 BXP
- **Score 80% or higher** → +25 BXP bonus

Track your progress through 20 levels, maintain daily streaks, and watch your knowledge grow alongside your XP.

## FAQ

### What's the maximum PDF file size?

Butterfast supports PDFs up to 10MB. For larger files, consider splitting them into chapters.

### Can I regenerate a quiz with different questions?

Yes — each generation creates a unique set of questions from the same source material.

### Does it work with scanned PDFs?

Text-based PDFs work best. Scanned documents with clear text may work, but image-only PDFs are not currently supported.

### How accurate are the generated questions?

Butterfast uses structured AI output with validation to ensure questions are accurate, relevant, and have exactly one correct answer.

## Stop Re-Reading. Start Self-Testing.

Turn your passive reading into active studying. Upload any PDF and get a complete practice quiz in seconds.