Generate Better Questions from a PDF — Free

Calten is a free AI question generator from PDF that turns any book, textbook, or document into meaningful practice questions. It skips bibliography, appendix, and index sections so every question comes from content that's actually worth studying.

Upload your PDF

Why most PDF quiz tools fall short

Reading is a passive activity. Your eyes move across the page, but without active engagement the information rarely sticks. Studies show people forget up to 70% of what they read within 24 hours - even material they felt they understood clearly.

The most effective fix is active recall: testing yourself on the material forces your brain to retrieve information rather than simply recognise it. The problem is that creating good questions manually takes time most people don't have.

Many AI quiz tools solve the time problem but introduce a different one: they generate shallow, trivial questions that only test whether you can recall a quoted sentence. They also process every page blindly — producing questions from bibliography entries, appendix tables, and index listings that have no study value.

Calten takes a different approach. It identifies and skips low-value sections like bibliography, references, appendix, and index, then generates questions from the content that actually matters — questions designed to check understanding, not just surface recognition. Try the free AI quiz generator or the quiz generator from PDF to experience the difference.

How to generate questions from a PDF

  1. 1

    Upload your PDF — free

    Drop any book, textbook, research paper, or document. Calten is free to use and supports files up to 500 MB - no reformatting needed, no account required to get started.

  2. 2

    AI analyses and filters the content

    The text is chunked and classified. Low-value sections like bibliography, references, appendix, and index are identified and excluded. The AI focuses on the meaningful study content worth testing.

  3. 3

    Meaningful questions are generated

    A balanced mix of multiple-choice and open-ended questions is created from the core content — questions that test understanding, not just word-for-word recall.

  4. 4

    Test your understanding

    Answer the questions, get scored, and review detailed feedback - a complete active recall loop from a single PDF upload.

Why Calten generates better questions

  • Free to use — no subscription or credit card required

  • Skips bibliography, appendix, index, and other filler sections automatically

  • Generates questions that check understanding, not just surface recall

  • Both multiple-choice and open-ended questions from the same PDF

  • Works with books, papers, lecture notes, and study guides

  • Questions come from your exact material, not a generic question bank

Frequently asked questions

Is Calten free to use?
Yes. Calten is free. Upload a PDF and generate questions immediately without paying or creating an account. A free account lets you save your tests and track progress over time.
Can I generate questions from any PDF?
Yes. Calten works with books, textbooks, research papers, lecture notes, and any text-based PDF up to 500 MB.
Why are the questions better than other AI quiz tools?
Most AI quiz tools generate shallow recall questions and process every page including bibliography, appendix, and index sections. Calten skips those low-value sections and generates questions focused on the meaningful study content — the parts of your PDF worth actually learning.
What types of questions does Calten generate?
Calten generates both multiple-choice questions (with four options and a correct answer) and open-ended subjective questions. The mix is designed to test surface recall as well as deeper comprehension.
Does it skip bibliography and appendix sections?
Yes. Calten automatically detects and ignores low-value sections like bibliography, references, about the author, appendix, and index. Questions are only generated from the meaningful content in your document.

Related PDF question generator guides

Upload your PDF and generate questions instantly

Free to use. No account required.

Upload your PDF