When you hit a question on a timed quiz and have no idea where to start, the instinct is to open a new tab and search. But that tab switch gets logged, the clock keeps running, and you still have to piece the answer together yourself. A dedicated AI quiz solver changes all of that. CaptureAI is a Chrome extension that lets you press Ctrl+Shift+X, drag a box around any question, and get a clear, detailed answer in a floating panel right on top of the quiz. No tab switching. No copy-pasting.
What Is an AI Quiz Solver?
An AI quiz solver reads a question from your screen and generates an answer. That sounds simple, but there is a big difference between copy-pasting a question into a chat tool (which means leaving the quiz page, losing your position, and potentially triggering detection) and having a tool that works silently on top of any website you are already viewing.
CaptureAI does the second thing. It takes a screenshot of the area you select, reads the question text from that image on your own computer, and sends just the text to one of its AI models. The answer comes back in 2–4 seconds and lands in a draggable panel over the quiz. Your quiz tab stays active and in focus the entire time.
From your perspective: press a shortcut, draw a box, read the answer. For a full breakdown of each step, read how CaptureAI works.
How CaptureAI Reads and Answers Questions
Here is exactly what happens from the moment you press the shortcut:
- Press Ctrl+Shift+X. A selection overlay appears over your screen
- Drag a box around the question and all answer choices
- CaptureAI reads the question text on your own computer (the image almost never leaves your device)
- The text is sent to an AI that identifies the question type and writes a direct, explained answer
- The answer appears in a floating panel on top of your current page
Because everything happens on the same tab, your quiz platform sees no tab switch, no change in focus, nothing unusual.
Step-by-Step: Using CaptureAI on a Quiz
Setup (under 2 minutes)
- Install CaptureAI from the Chrome Web Store
- Activate your license at captureai.dev/activate. Your license key arrives by email
- If you are on Pro, turn on Privacy Guard in the extension settings before starting any quiz
- Open your quiz normally and begin
During the Quiz
- When you reach a question, press Ctrl+Shift+X
- Drag to select the full question, including all answer choices for multiple choice
- Wait 2–4 seconds for the answer to appear
- Read the answer and the explanation in the floating panel
- Click outside the panel to dismiss it. The quiz stays active the entire time
Tip: Press Ctrl+Shift+F (Quick Capture) to instantly re-capture the same screen area without drawing a new selection box. This helps when several questions share the same layout.
What to Capture for Different Question Types
- Multiple choice: capture the full question and all options; the AI picks the correct letter and explains why
- Short answer or fill-in: capture just the question prompt; the AI writes a concise, direct answer
- Math problems: capture the entire problem including any numbers, formulas, or conditions shown on screen; the AI shows every step
Works on Every Platform
CaptureAI captures from your screen, so it works on any website without connecting to that platform in a special way. That includes:
- Canvas: the most widely used quiz platform at US colleges (full Canvas quiz guide)
- Moodle: open-source platform common at universities worldwide
- Blackboard: still used by many large institutions
- Top Hat: live classroom quizzes and participation questions
- Schoology: common in K–12 and high school courses
- Google Forms, custom quiz sites, PDFs opened in the browser: if you can see it on screen, CaptureAI can capture it
For advice specific to each platform, read Canvas, Moodle & Blackboard: Tips Every Student Should Know.
Advanced Features for Harder Quizzes
Auto-Solve Mode (Pro, Vocabulary.com only)
Auto-Solve Mode is a Pro feature that watches the page for new questions and answers them without you drawing a selection box. The site it currently supports is Vocabulary.com, which a few classes still assign for word-list work. Every other quiz platform (Canvas, Moodle, Blackboard, Top Hat, Schoology, and the rest) still uses the manual Ctrl+Shift+X capture flow.
Ask Mode (Pro)
A small Ask Mode switch sits on the floating panel. Turn it on and the Capture flow gives way to a typing flow: write your question, pin up to three images if you need them, send. The answer comes back in the same panel. It is the surface to use when one screenshot will not carry the whole question, when you want the AI to weigh your wording, or when you are following up on a previous answer rather than starting over from a fresh capture. Capture Mode (Ctrl+Shift+X) keeps working on every plan.
Reasoning Mode
Reasoning mode (Basic and above) is a toggle that tells the AI to take extra time and double-check its work before answering. Off by default. Turn it on for tricky logic or multi-step problems where one early mistake throws off the rest.
Turn it on for exams where every point matters.
Privacy Guard (Pro)
Privacy Guard stops your quiz platform from detecting the extension. It blocks the scripts those platforms use to catch study tools, prevents your activity log from recording anything unusual, and keeps your tab behavior from being flagged. For the full picture of what platforms track and how Privacy Guard protects you, read privacy and AI tools: what students need to know.
How Much Does CaptureAI Cost?
Three tiers are available:
Free
- The starter usage allowance — covers a week of light, exploratory use
- Capture, Quick Capture, Stealth Mode, and the persistent sidebar chat
- Quick + Standard models with the auto router
Basic ($1.99/week or $5.99/month)
- About 10× more usage than Free
- Reasoning mode, agent mode, custom instructions
- Advanced models (
gpt-5.4,claude-sonnet-4-6,gemini-3.1-pro-preview,grok-4.20) - Screenshot capture and floating panel on any site
Pro ($3.49/week or $9.99/month)
- Highest usage allowance and the most generous weekly budget
- Reasoning mode plus web search and fetch URL inside the sidebar agent
- Ask Mode on the floating panel (custom prompt + up to 3 image attachments)
- Privacy Guard, the script-blocking layer for monitored quizzes
No data collection on either plan. Screenshots are read on your computer and the text is discarded after your answer is returned. No usage tracking, no analytics. To get the most out of the tool beyond quizzes, read the AI homework helper complete guide for students.
Get Started Today
CaptureAI takes under two minutes to set up. Install it from the Chrome Web Store, activate your license, and press Ctrl+Shift+X on any quiz question to see it in action.
The answer comes to you, on top of the quiz, in seconds, without leaving the page.
Install CaptureAI today and start with Basic at $1.99/week.