Bringing Gemini conversations to your 'second brain': Introducing the 'Obsidian AI Exporter' Chrome extension

By the way, everyone, what do you do with your Gemini conversations?

Research, debugging, brainstorming... Our dialogues with AI contain wonderful ideas and solutions. However, the moment you close your browser tab, that valuable information gets buried deep within your Gemini history.

“I want to save my AI dialogues as searchable, linkable 'knowledge assets.'”

With that in mind, I am developing a Chrome extension called “Obsidian AI Exporter” that allows you to save Google Gemini conversations to Obsidian with a single click.

What can it do?

This extension adds a 'Sync to Obsidian' button to the Gemini screen, which saves the currently open conversation as an Obsidian note.

🚀 Key Features

1. Supports Deep Research reports Long-form reports generated by 'Deep Research,' a standout feature of my personal Gemini, can be saved while maintaining the document's structure. Even research results spanning dozens of pages can be imported into my Obsidian knowledge base without formatting issues.

2. Obsidian-native format It's not just a simple text copy. I've configured it to use Obsidian's 'Callouts' syntax to save questions and answers in a format that is easy to distinguish visually.

3. Automatic metadata (YAML) assignment It automatically adds the URL, date, time, and tags to the front matter upon saving. For users like me who use plugins like Dataview, this makes it extremely easy to extract and organize 'AI conversations' later on.

4. Incremental update mode It's perfectly fine to continue a conversation you've already saved. If you press the 'Sync to Obsidian' button again, only the new messages will be appended. You can press it as much as you like.

Output Preview

Let's take a look at how it actually gets saved.

Standard conversation

User questions and AI answers are clearly separated.

---
id: gemini_xxxxxxxxxxxx
title: "Gemini のチャット記録を Obsidian へ残す方法はありませんか？"
source: gemini
url: https://gemini.google.com/app/xxxxxxxxxxx
created: 2026-01-07T03:00:53.033Z
modified: 2026-01-07T03:00:53.034Z
tags:
  - ai-conversation
  - gemini
message_count: 10
---

> [!QUESTION] User
> Gemini のチャット記録を Obsidian へ残す方法はありませんか？
> Obsidian Local REST API は使っています。 https://github.com/coddingtonbear/obsidian-local-rest-api
> - 自動的に Obsidian へ連携してほしい
> - 1つのチャットの記録をできるだけチャット形式であることが分かるように記録してほしい
> - 1チャット → 1ファイル
> - 更新があったら、更新分も同じファイルで更新し続けてほしい
> このようなツールがなければ開発することもいとわない

> [!NOTE] Gemini
> ご希望の要件（自動連携、チャット形式の維持、1チャット1ファイル、継続的な更新）をすべて満たす既存の「完成された一般向けツール」は、現時点では存在しません。

Deep Research report

In the case of report formats, it is saved with a structure that prioritizes readability.

---
id: gemini_deep-research-xxxxxxxx
title: プロジェクト方法論の反復と計画性
source: gemini
url: "https://gemini.google.com/app/xxxxxxx"
created: "2026-01-11T03:54:37.300Z"
modified: "2026-01-11T03:54:37.301Z"
tags:
  - ai-research
  - deep-research
  - gemini
message_count: 1
---

# 大規模システム開発における「循環的定義」の制度化：硬直的フレームワーク内での適応型方法論に関する調査報告書

## エグゼクティブ・サマリー

本報告書は、大規模かつミッションクリティカルなITシステム開発において、従来のウォーターフォール型プロセス（フェーズゲート方式）が抱える構造的な欠陥と、その解決策としての「循環的プロセス（Managed Iteration）」の導入可能性について、包括的な調査・分析を行ったものである。

(元の見出し構造を維持した本文)

Privacy and Security

While not limited to Obsidian users, data privacy is our top priority. This extension is designed as follows:

• No external transmission: Conversation data is never sent to the developer's servers or any third parties.

• Localhost communication only: Data is simply passed directly from your browser to the Obsidian (Local REST API) running on your PC.

• API key stored locally: The API key you set is stored in your browser's local storage without encryption, but it is never synced externally.

How to install

Setup is simple. Just prepare Obsidian to accept external input.

Step 1: Preparing Obsidian

1. Install and enable Local REST API from the Obsidian community plugins.

2. Copy the API Key displayed in the plugin settings screen.

Step 2: Configuring the extension

1. Click the Chrome extension icon and open the settings.

2. Enter the following information and click Save.

   • API Key: The key you copied earlier

   • Vault Path: Destination folder (e.g., AI/Gemini, etc.)

Step 3: Using it

When you open the Gemini page, a purple “Sync to Obsidian” button will appear in the bottom right. Just click it!

Installation and future updates

It is currently under review for the Chrome Web Store. Once approved, it will be available for installation via the link below. If you want to try it out right now or use the latest features, please build it from the source code.

For details, please see this GitHub.

• 📦 GitHub repository:

• 🛒 Chrome Web Store: (Coming Soon...)

Future plans

Currently, it only supports Gemini, but since I also use Perplexity and Claude on a daily basis, I will gradually add support for them. For some reason, I think ChatGPT will be the last one I support.

• Claude support

• Perplexity support

• ChatGPT support

• Note template customization feature

Don't let your conversations with AI end as a fleeting flow; start accumulating them in your second brain. I look forward to your feedback! 🙏