Introducing Bobbin: turn any text into a concept graph
We read a lot of dense text — lecture notes, long chats with an LLM, research articles — and most of it collapses into a wall we never open again. Bobbin is a small tool I built to fix that: paste in some text and it weaves the ideas into a navigable concept graph — each idea as its own entry, linked to the others it relates to.
A live, read-only demo — drag the graph, switch views. Open the full app ↗ to add your own text.
What it does
Drop in a transcript or some notes and Bobbin:
- Extracts the concepts and the relationships between them, deduping repeated ideas instead of listing them twice.
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Types each node for whatever the text is about —
person,work,concept,mood— so it isn’t locked to one domain. - Lets you read it four ways: a Digest (each concept with its connections), a Relationships table, an interactive Graph, and an Insights view that surfaces the hubs and the loosely-connected gaps.
Keep adding text and it merges into the same graph. Sign in and your graphs save as projects. There’s a live demo on the homepage — a music-theory graph — so you can poke around before adding your own.
Under the hood
Bobbin is a Next.js app with Supabase for auth and storage (row-level security, so your graphs stay yours), and the extraction runs through Claude behind a server route. The name is a bobbin — the spool that thread winds around — which is roughly what it does with ideas.
Try it
👉 heybobbin.com — paste something you’ve been meaning to make sense of.