Your AI Knowledge Companion for the Open Web.
WebLen turns Articles, Videos, PDFs, and Code Repos into a structured, interconnected local knowledge base.


Connect the Dots. Literally.
Your reading history isn't just a list. It's a universe. WebLen visualizes connections between every article, video, and paper you’ve analyzed.
Understand more than articles.
Multi-modal extraction + page-type sniffing, tuned for real-world websites and messy pages.
YouTube / Bilibili transcript analysis, key moments, and creator context—without rewatching.
One-click repo overview: architecture, modules, and a clean mental model for onboarding.
Local PDF parsing for papers and reports. Extract structure, concepts, and references.
IndexedDB library by default. You control what gets analyzed and what gets synced.
Auto-detect page types (article / video / forum / repo / PDF) and apply the best extractor.
Export summaries and outlines to Markdown for your notes, docs, or knowledge base.
Switch languages instantly (En / Zh / Ja / Fr) with consistent, readable typography.
Chat with your Library.
Don't just chat with one page. Ask questions based on your entire reading history—grounded in your own knowledge.