The Easiest Way to Convert a PDF to fill in the blanks
Learn how to instantly turn any study PDF into interactive fill-in-the-blank exercises and cloze deletion flashcards using Duetoday's AI study tools.
How to Convert Your PDF to Fill in the Blanks
Transforming a static PDF to fill in the blanks is the most effective way to transition from passive reading to active recall. When you use a PDF to fill in the blanks, you force your brain to retrieve information rather than just recognizing it on the page. Duetoday makes this process seamless by using AI to identify key concepts and create interactive study materials in seconds.
TL;DR:
Upload any PDF and instantly generate cloze (fill-in-the-blank) flashcards.
Focus your study sessions on active recall for better long-term retention.
Customize the difficulty and specific topics you want to practice.
How to do PDF to fill in the blanks in Duetoday (step-by-step)
Log in to Duetoday: Access your dashboard where all your study materials are organized.
Upload your file: Click the upload button and select the PDF you want to transform. You can also drag and drop the file directly into the interface.
Select your language: Ensure the AI understands the source text by selecting the correct language for your document.
Choose the 'Flashcards' or 'Quiz' mode: To generate fill-in-the-blank style questions, navigate to the flashcards section.
Select 'Cloze Deletion' style: Pick the option that focuses on hiding specific keywords within a sentence, which creates the classic fill-in-the-blank format.
Identify key chapters: Use the chapter selection tool to focus only on the pages or sections that contain the facts you need to memorize.
Rename headings for clarity: Organize your output by renaming the generated sections so they match your syllabus or lecture notes.
Adjust question density: Choose how many blanks you want per page of content to control the intensity of your study session.
Review generated cards: Browse through the AI-generated blanks to ensure they capture the most important terminology.
Edit and refine: If a specific blank is too easy or too hard, manually edit the text or the hidden word to perfect your deck.
Export or save: Save the blanks to your Duetoday library for daily practice or export them to your favorite external study app.
Start practicing: Use the built-in study mode to test yourself on the new fill-in-the-blank materials immediately.
What you can generate from your PDF
Cloze Flashcards: Standard sentences where the key term is hidden, requiring you to type or say the answer.
Fill-in-the-blank Quizzes: Comprehensive tests that provide a paragraph of text with multiple missing keywords to test your contextual understanding.
AI Tutor Support: If you get a blank wrong, ask the AI tutor to explain the concept behind that specific keyword.
Mini example: Photosynthesis Basics
Input: A 2-page PDF explaining the process of photosynthesis, specifically focusing on the role of chlorophyll and sunlight in the light-dependent reactions.
Output (Fill-in-the-blank samples):
1. Photosynthesis occurs primarily in the ________ of the plant cell. (Answer: Chloroplasts)
2. The green pigment that absorbs light energy is called ________. (Answer: Chlorophyll)
3. During the light-dependent reactions, ________ is split to release oxygen. (Answer: Water)
4. The main byproduct of photosynthesis released into the atmosphere is ________. (Answer: Oxygen)
5. Plants convert solar energy into chemical energy stored in ________. (Answer: Glucose)
Upload Your PDF Here
Tips to get higher-quality results
Clean up the PDF: Remove table of contents, bibliographies, or appendix pages before uploading to ensure the AI focuses only on the core material.
Provide context: If your PDF is highly technical, use the chapter naming feature to give the AI more context about the specific subject matter.
Split large files: For textbooks over 100 pages, try uploading specific chapters at a time to get more detailed and granular fill-in-the-blank questions.
Use high-quality source text: Ensure your PDF isn't overly blurry; the clearer the text, the more accurate the AI will be at identifying the most important terms to hide.
Troubleshooting (common issues + fixes)
Scanned PDF not reading → Re-upload the document using a high-resolution scan or use a PDF version with a text layer.
Blanks are too easy → Adjust the AI settings to target more complex vocabulary or increase the number of blanks per paragraph.
Output is too generic → Select specific chapters instead of the whole document to force the AI to focus on niche details.
Missing key information → Ensure the PDF text wasn't cut off during the upload process and check that the language setting matches the document.
Master Your Studies with Duetoday
Stop wasting hours manually covering up text with white-out or creating flashcards by hand. Converting a PDF to fill in the blanks is the ultimate shortcut to mastering complex subjects. By automating the creation of active recall exercises, Duetoday allows you to spend more time actually learning and less time preparing.
Ready to transform your study routine? Try Duetoday today and turn your lecture slides and textbooks into interactive practice sessions in one click.
Duetoday is an AI-powered learning OS that turns your study materials into personalised, bite-sized study guides, cheat sheets, and active learning flows.




