Harken Chrome extension

Harken Chrome extension enables users to quiz themselves on content from any article on the internet by generating questions with a click and adding those questions to Harken for future review. It follows a scientific approach to help long-term memory by leveraging spaced repetition and active recall. The product is part of a wider flashcard system designed for lifelong learners who want to retain information encountered online.

Harken uses a science-backed learning strategy called spaced repetition to optimize studying, so you can learn more in less time. With spaced repetition, you’ll review unfamiliar concepts more frequently than concepts you already know. This means you’ll learn exponentially faster with Harken than with traditional study methods.

The extension allows you to quiz yourself on content from any article, using AI to generate questions with a single click, and to import cards you care about for future review.

Harken emphasizes flexible formatting, easy access across devices, and convenient import of Anki decks, with progress tracked via charts that visualize retention over time.

Use cases

• Import external flashcards from Anki for unified review