User-initiated context capture
Captures AI conversation text from supported sites when you choose to run the Capture action, rather than collecting content passively in the background.
Prompt Bridge
Prompt Bridge is a free Chrome extension for carrying AI conversation context across supported chat platforms, with data kept local by default.
Overview
Prompt Bridge is a free Chrome extension for carrying AI conversation context between supported chat platforms. Its core job is to let you move the substance of an existing thread into another AI assistant so you do not have to restart the conversation each time you switch tools.
The site positions the extension as local-first: prompts, summaries, and conversation context are stored on your device unless you choose to export them or send text to a configured AI provider for summarisation. The homepage also says it works on Chrome, Edge, and Brave, while the privacy policy names supported AI sites including ChatGPT, Claude, Gemini, Grok, and DeepSeek.
Features
Cross-platform context portability
Transfers captured context so you can continue an existing thread on another supported AI platform instead of starting over from scratch.
Browser and platform support
States support for Chrome, Edge, and Brave on the homepage, with supported AI sites listed in the privacy policy as ChatGPT, Claude, Gemini, Grok, and DeepSeek.
Local-first data handling
Keeps prompts, summaries, and AI context on your device by default, with conversation threads stored locally and API keys stored in encrypted local browser storage.
Configured provider workflow
Allows configured provider API keys for OpenAI, Anthropic, Google, DeepSeek, and xAI, and sends data to a third-party provider only when you explicitly trigger summarisation.
Use cases
Switching between AI assistants
A user working across multiple AI chat tools can capture context in one place and carry it into another platform instead of retyping the same background each time.
Keeping long-running threads portable
Someone with an ongoing research or drafting thread can preserve the conversation state locally and revisit it later without relying on a remote account history flow.
Local-only workflow with optional provider use
A privacy-conscious user can keep prompts and summaries on their own device and only send data to a configured provider when they explicitly request summarisation.
Getting setup or bug help
A person who wants help from the project can use the support options listed on the site to ask a question, open a GitHub issue, or send a direct message on X.
Pros and Cons
Pros
- Free to install, with no sign-up stated on the homepage.
- Works on Chrome, Edge, and Brave.
- Local-first storage keeps conversation data on the device by default.
- Supports a defined set of major AI chat platforms on supported sites.
- Contact options are available through email, GitHub, and X.
Cons
- The public pages do not provide a full step-by-step workflow beyond capture, summarisation, and transfer.
- The site does not publish detailed limits, plan tiers, or pricing beyond saying the extension is free.
FAQ
What does Prompt Bridge do?
Prompt Bridge is a Chrome extension that captures AI conversation context from supported chat pages and carries it into another supported AI platform when you use the extension's transfer workflow.
Which browsers and AI platforms does it support?
The source mentions support for Chrome, Edge, and Brave browsers, and the privacy policy names supported AI sites including ChatGPT, Claude, Gemini, Grok, and DeepSeek.
How much does Prompt Bridge cost?
The homepage says it is free and requires no sign-up.
Does Prompt Bridge read or store my conversations?
The privacy policy says conversation text is read from the DOM of supported sites only when you click Capture, and the data stays on your device unless you explicitly export or send it through a summarisation action.
How can I get help or report a bug?
The support page lists email, GitHub, and X as contact options, and the site also links to a support page and GitHub issue tracker.
Quick Facts
- Category
- AI Chat / Productivity
- Platform
- Chrome extension
- Browser support
- Chrome, Edge, Brave
- Pricing
- Free; no sign-up stated
- Source domain
- promptbridge.co
- Data handling
- Local-first; no publisher server stated
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