Nebulearn

Rapid Keybinds: Highlight text and hit Alt+Shift+Q to send it to the question side of a card, or Alt+Shift+A for the answer.

PDF Support: Extract text and create questions directly from PDFs in your browser.

Quick-Action Toolbar: Highlight any text on a page to trigger a floating toolbar. Click "Flashcard" or "Quiz" to instantly generate a card from your selection.

Total Keyboard Control: Speed up your workflow with 10+ fully customizable keybinds for saving cards, swapping from term to definition, clearing fields, triggering AI generation, and more.

🟦 [ 𝗦𝗺𝗮𝗿𝘁 𝗔𝗜 𝗚𝗲𝗻𝗲𝗿𝗮𝘁𝗶𝗼𝗻 ] 🟦

Custom AI Profiles: Give the AI specific instructions on exactly how you want your cards formatted and generated. Every AI action runs through your active profile.

Instant Definitions and Quizzes: Highlight a block of text, apply your active AI profile, and let Nebulearn automatically generate clean definitions or multiple choice questions based on your custom rules.

Snip and Create: Screenshot any diagram, slide, or image on your screen. It gets sent to AI along with your active profile, which generates the card content automatically. The image is attached to the finished card.

Quick-Action AI: Highlight any text on a page and hit "Flashcard" or "Quiz" from the floating toolbar to instantly generate a card using your active profile.

🟦 [ 𝗩𝗶𝘀𝘂𝗮𝗹𝘀 𝗮𝗻𝗱 𝗜𝗺𝗮𝗴𝗲 𝗢𝗰𝗰𝗹𝘂𝘀𝗶𝗼𝗻 ] 🟦

Attach Images: Paste or drag and drop images directly onto your cards. You can add an image to the front and back of the card.

Built-in Image Editor: Draw, add shapes, or create image occlusion flashcards right inside the extension. Use this to cover things or edit images!

🟦 [ 𝗢𝗿𝗴𝗮𝗻𝗶𝘇𝗮𝘁𝗶𝗼𝗻 𝗮𝗻𝗱 𝗦𝗽𝗮𝗰𝗲𝗱 𝗥𝗲𝗽𝗲𝘁𝗶𝘁𝗶𝗼𝗻 ] 🟦

Tagging and Folders: Categorize your standard and multiple choice questions on the fly so your library stays organized without manual sorting later.

Instant Sync: Every card, tag, and image is immediately synced to cloud storage and your Nebulearn library.

Science-Backed Scheduling: Cards are prioritized using customizable spaced repetition algorithms including SM2 and FSRS, so you study what matters most, right when you need to.

This extension pairs seamlessly with the full Nebulearn web app, where you can study with multiple study modes, share decks, edit your library, and customize how you want to be tested. Everything is in one place.

On a side note: this extension has been two years in the making, built by me (an engineering student) who needed a better way to study. I personally use Nebulearn in all my courses and am constantly working on improving it. If you're a learner who want to actually understand and retain what they study, without burning hours memorizing information and making and organizing flashcards, then try Nebulearn. You won't regret it :)