ctxport

CtxPort

One click. Structured Markdown. Any AI conversation.

Your AI conversations deserve a better clipboard.

简体中文 | English

Supported Platforms

Get Started · Features · Documentation

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The Problem

You just spent 45 minutes in a deep conversation with ChatGPT. You found the perfect architecture for your project. Now you need to share it with Claude for implementation.

What do you do?

Ctrl+A, Ctrl+C? You get a mess of HTML artifacts, broken formatting, and missing code blocks.

Copy each message manually? Life is too short.

Screenshot it? Text in images is where knowledge goes to die.

AI conversations are the new unit of knowledge work. But moving them between tools feels like faxing a PDF in 2026.

CtxPort fixes this. One click, and your entire conversation becomes a clean, structured Markdown document -- ready to paste into any AI tool, editor, or knowledge base.

The Difference

	Without CtxPort	With CtxPort
Copy a conversation	Select all, copy, paste, fix formatting for 10 min	One click. Done.
Move context between AIs	Re-type your whole conversation history	Paste the Context Bundle, keep going
Save a conversation	Bookmark it and pray the URL survives	Structured Markdown you own forever
Share with your team	"Let me screenshot this..."	Share a clean .md file
Extract just the code	Scroll through 50 messages hunting for snippets	Code Only mode, one click

Key Benefits

  No account required           Works offline
  Zero data uploaded            100% local processing
  Minimal permissions           Open source (MIT)

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How It Works

graph LR
    A["AI Conversation<br/>(ChatGPT, Claude, etc.)"] --> B["CtxPort<br/>Browser Extension"]
    B --> C["Context Bundle<br/>Structured Markdown"]
    C --> D["Another AI Tool"]
    C --> E["Your Notes / Docs"]
    C --> F["Team Chat / PR"]

1. Browse any supported platform
2. Click the CtxPort copy button (or press Alt+Shift+C)
3. Paste your structured Context Bundle anywhere

That's it. No configuration. No sign-up. No cloud.

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Features

Copy From Anywhere

Feature	Description
In-Chat Copy Button	A copy button appears right in the conversation -- click to copy the entire thread
Sidebar List Copy	Hover over any conversation in the sidebar and copy without even opening it
Keyboard Shortcut	Alt+Shift+C copies the current conversation instantly
Multiple Formats	Full, User Only, Code Only, Compact -- pick what you need

Sidebar List Copy -- The Feature Nobody Else Has

Most copy tools make you open a conversation first. CtxPort lets you hover over conversations in the sidebar and copy them directly. Need to grab 5 conversations for a project brief? Hover, click, hover, click. No page loads. No waiting.

Context Bundle Format

Every copy produces a structured Markdown document with frontmatter metadata:

---
ctxport: v2
source: chatgpt
url: https://chatgpt.com/c/abc123
title: "Discuss REST API Authentication"
date: 2026-02-07T14:30:00Z
nodes: 24
format: full
---

## User

I'm building a SaaS product and need to choose between
API key auth and OAuth2. What do you recommend?

## Assistant

Based on your scenario, I'd recommend a layered approach...

The frontmatter tells any receiving tool exactly where this conversation came from, when it happened, and how many messages it contains. Structured context, not just raw text.

Copy Formats

Format	What You Get	Best For
Full	Complete conversation with all messages	Context transfer between AI tools
User Only	Only your messages (prompts)	Reusing your prompts in a different AI
Code Only	Extracted code blocks with language tags	Grabbing implementation snippets
Compact	Condensed single-paragraph messages	Quick sharing in chat or email

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Quick Start

Install from Chrome Web Store

Coming soon -- currently in development. Star the repo to get notified!

Build from Source

# Clone the repo
git clone https://github.com/nicepkg/ctxport.git
cd ctxport

# Install dependencies
pnpm install

# Build all packages
pnpm build

# Start the extension in dev mode
pnpm dev:ext

Then load the unpacked extension from apps/browser-extension/dist/chrome-mv3-dev in chrome://extensions.

Usage

1. Navigate to any supported platform (ChatGPT, Claude, Gemini, DeepSeek, Grok, Doubao, GitHub)
2. Start or open a conversation
3. Click the CtxPort copy button that appears in the chat, or press Alt+Shift+C
4. Paste your Context Bundle wherever you need it

For sidebar list copy: hover over any conversation in the left sidebar to reveal the copy icon.

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Roadmap

• ChatGPT support
• Claude support
• Gemini support
• DeepSeek support
• Grok support
• Doubao (豆包) support
• GitHub Issues & PRs support
• Sidebar list copy
• Multiple copy formats
• Keyboard shortcuts
• Chrome Web Store release
• Firefox support
• Context Bundle import (paste a bundle to restore conversation context)
• Batch export (select multiple conversations, export as a bundle)
• Custom format templates

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Architecture

ctxport/
  packages/
    core-schema/       # Zod schemas for Context Bundle format
    core-plugins/      # Platform adapters (ChatGPT, Claude, etc.)
    core-markdown/     # Markdown serialization engine
    shared-ui/         # Shared React components
  apps/
    browser-extension/ # WXT + React 19 + Tailwind CSS 4

Built as a monorepo with pnpm workspaces and Turborepo. Each platform adapter is a self-contained plugin, making it straightforward to add new platforms.

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Contributing

Contributions are welcome! Whether it's a bug report, feature request, or pull request -- every contribution helps.

# Fork and clone the repo
git clone https://github.com/YOUR_USERNAME/ctxport.git

# Install dependencies
pnpm install

# Start development
pnpm dev:ext

See CONTRIBUTING.md for detailed guidelines.

Contributors

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License

MIT -- Use it however you want.

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If CtxPort saves you time, consider giving it a star.

It helps others discover the project and keeps development going.