KanjiLens is a Japanese manga translator and learning tool designed specifically for online Japanese manga websites. Its main purpose is to remove friction and keep learners immersed in the flow of the story rather than getting lost in dictionaries, allowing users to learn Japanese intuitively while reading their favorite manga.

The extension features instant kanji lookup where hovering over any kanji shows its reading and meaning instantly. It includes one-click image translation that uses OCR technology to translate text within manga panels and other images seamlessly. An integrated spaced repetition system (SRS) allows users to save new words to personalized flashcard decks for long-term retention.

Additional capabilities include right-click scanning functionality, custom mnemonics to aid memory, customizable settings for personalization, and per-site configuration options to tailor the experience across different websites.

The tool works by scanning manga panels and overlaying translations, readings, meanings, and furigana directly on the page. This OCR-powered approach enables users to follow stories without breaking immersion while learning Japanese characters and vocabulary.

Benefits include maintaining reading flow, intuitive Japanese learning through context, and long-term kanji retention through spaced repetition. Use cases involve reading Japanese manga online, studying kanji vocabulary, and practicing Japanese comprehension through authentic materials.

The target users are Japanese language learners who read manga online. The product integrates as a browser extension and focuses on providing an immersive learning experience through real Japanese content.