Nebulearn: AI Flashcard Maker icon

Nebulearn: AI Flashcard Maker

by Daniel Hong ยท nebulearn.app ยท Education
Established publisherManifest V3 in_app
View in Chrome Web Store Data as of 15 Oct 2026

Instantly create flashcards on websites with AI Generations, customizable Keybinds, image editing, copy & pasting, latex, and more!

Users
388
+90 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
65
+1 in 30 days
Store rank
#48K
#41K among extensions
Version
1.1.15
updated 25 Sep 2026

Users

monthly, 7 months
0194388Mar 2026Jul 2026Oct 2026
Latest, 15 Oct 2026: 388 usersMove the mouse over the chart for any month

Ratings count

monthly, 7 months
03265Mar 2026Jul 2026Oct 2026
Latest, 15 Oct 2026: 65 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About Nebulearn: AI Flashcard Maker

The fastest and most seamless flashcard creation and spaced repetition tool. Nebulearn saves you as much time as possible creating and memorizing flashcards. Built by a busy student who believes that time is truly your most valuable asset, I firmly assert that if you take the time to learn and use Nebulearn, you will improve your workflow and optimize your memory retention. Here's how Nebulearn saves you hours of time: ๐ŸŸฆ [ ๐—™๐—ฟ๐—ถ๐—ฐ๐˜๐—ถ๐—ผ๐—ป๐—น๐—ฒ๐˜€๐˜€ ๐—–๐—ฎ๐—ฟ๐—ฑ ๐—–๐—ฟ๐—ฒ๐—ฎ๐˜๐—ถ๐—ผ๐—ป ] ๐ŸŸฆ ยป Zero Tab Switching: Type, paste text, or paste images directly into the extension sidebar without leaving your current webpage to create flashcards. Format your flashcards any way you want. ยป 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. ยป PDF Support: Extract text and create questions directly from PDFs in your browser. ยป 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. ยป 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. ๐ŸŸฆ [ ๐—ฆ๐—บ๐—ฎ๐—ฟ๐˜ ๐—”๐—œ ๐—š๐—ฒ๐—ป๐—ฒ๐—ฟ๐—ฎ๐˜๐—ถ๐—ผ๐—ป ] ๐ŸŸฆ ยป 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. ยป 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. ยป 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. ยป 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. ๐ŸŸฆ [ ๐—ฉ๐—ถ๐˜€๐˜‚๐—ฎ๐—น๐˜€ ๐—ฎ๐—ป๐—ฑ ๐—œ๐—บ๐—ฎ๐—ด๐—ฒ ๐—ข๐—ฐ๐—ฐ๐—น๐˜‚๐˜€๐—ถ๐—ผ๐—ป ] ๐ŸŸฆ ยป 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. ยป Built-in Image Editor: Draw, add shapes, or create image occlusion flashcards right inside the extension. Use this to cover things or edit images! ๐ŸŸฆ [ ๐—ข๐—ฟ๐—ด๐—ฎ๐—ป๐—ถ๐˜‡๐—ฎ๐˜๐—ถ๐—ผ๐—ป ๐—ฎ๐—ป๐—ฑ ๐—ฆ๐—ฝ๐—ฎ๐—ฐ๐—ฒ๐—ฑ ๐—ฅ๐—ฒ๐—ฝ๐—ฒ๐˜๐—ถ๐˜๐—ถ๐—ผ๐—ป ] ๐ŸŸฆ ยป Tagging and Folders: Categorize your standard and multiple choice questions on the fly so your library stays organized without manual sorting later. ยป Instant Sync: Every card, tag, and image is immediately synced to cloud storage and your Nebulearn library. ยป 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 :)

Growth

WindowUsersChangeRatingsRating
7 days+10+2.6%00.00
30 days+90+30.2%+10.00
6 months+353+1008.6%+390.00

Chrome Web Store search rankings

Where Nebulearn: AI Flashcard Maker appears when people search the store, with the 30 day change
Search phrasePosition30 days
flashcards#41โˆ’16

Version history

19 versions recorded
1.1.1525 Sep 2026
1.1.1411 Sep 2026
1.1.138 Sep 2026
1.1.1230 Aug 2026
1.1.1111 Aug 2026
1.1.106 Aug 2026
1.1.91 Aug 2026
1.1.830 Jul 2026

Details

Category
Education
First seen
14 Mar 2026
Size
8.6 MB
Languages
en
Pricing
in_app
Privacy policy
nebulearn.app
Support
nebulearn.app
Extension ID
ingmbfgiilinohhllmgaifjjinhheopp

Permissions and risk

Moderate riskimpact 3, likelihood 2
Permissions
activeTabalarmsstorageclipboardReadclipboardWriteidentitycontextMenussidePanel
Site access
https://api.nebulearn.app/*http://localhost/*<all_urls>
Can read and change data on every website you visit.

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