Marginalia — Private AI Conversation Archive

Private archive · stays on this device

Start your archive

Drop in your ChatGPT conversations.json, a Claude data export, or any JSON / text file. Everything stays on this device — nothing is uploaded.

Auto-detects · multiple files at once · drop anywhere on the page

Search by meaning or word

Keyword, semantic, hybrid, or natural-language "Ask" mode with confirmation before running.

Organize your way

Folders, tags, favorites, message-level bookmarks, and custom filter types you define.

Surface the unexpected

Surprise Me and Deep Research find patterns, outliers, and connections you'd probably miss.