Quizlens

QuizLens transforms any text on the web into a personalized quiz, right in your browser's side panel. Highlight a passage, click "Quiz me!", and test your understanding in seconds. No tab switching, no flashcard apps, no copying text into another tool.

7 question types to test real understanding:
- Multiple Choice: identify the right answer from plausible options
- True/False: evaluate statements for accuracy
- Fill in the Blank: recall key terms from memory
- Short Answer: explain concepts in your own words (AI-evaluated)
- Conceptual: demonstrate deeper understanding
- Critical Thinking: analyze and synthesize across ideas
- Vocabulary Matching: connect terms to definitions

Works everywhere you read online:
- News articles and blog posts
- Online textbooks and course materials
- Technical documentation and API references
- Wikipedia and research papers
- PDF content via screenshot and OCR (Pro)

Free plan includes:
- 5 quizzes per day
- 3 question types (Multiple Choice, True/False, Fill in the Blank)
- XP, levels, streaks, and badges
- Full quiz history and progress tracking

Pro plan unlocks:
- Unlimited daily quizzes
- All 7 question types including AI-evaluated open-ended answers
- Screenshot and OCR quizzing for PDFs and images
- XP bonuses for perfect quizzes, daily streaks, and milestones
- Streak freezes to protect your streak on off days
- All 50 achievement badges