EasyLearn — Concept Lookup

Select an unfamiliar concept on a web page to look it up with its surrounding context. If text selection is unavailable, enter the concept in the sidebar. Saved concepts and their contexts stay in a local library. Key features: - Compact-icon and full-button selection launchers - Context-aware explanations, merged contexts, and re-explanation for the current passage - On-demand simpler explanations and examples without replacing the original answer - Local automatic topics plus optional user-created folders - Separate related concepts already in the library from suggested concepts worth exploring; nothing is added without user action - Search, sort, multi-select, batch move, and batch delete - In-page concept highlights, saved Q&A, and FSRS spaced-repetition review - Markdown export and full JSON backup/restore with preview, validation, and rollback on failure - A rate-limited free tier or BYOK access to compatible model services - Local-first storage for the library, folders, relationships, Q&A, and review progress; no ads or product analytics