Prompt Bridge

Prompt Bridge is a Chrome extension that helps users carry AI conversation context across supported AI platforms so they can continue threads without restarting.

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Keep AI context portable across chats

Prompt Bridge is a Chrome extension that helps users move AI conversation context between supported chat platforms. Its core purpose is to avoid restarting a thread when switching between tools or continuing work later.

The site describes the product as free, with no sign-up required, and compatible with Chrome, Edge, and Brave. Its privacy policy says the extension works locally on the device and only sends text to a third-party AI provider when the user explicitly triggers a summarization action.

Core capabilities

Capture context from supported AI chats

The privacy policy says the extension reads AI conversation text from the DOM of supported sites when the user clicks Capture, rather than collecting it passively.

Store conversation threads locally

Captured threads are stored in browser IndexedDB on the user’s device, which keeps conversation context available for later reuse without relying on a publisher server.

Summarize through configured AI providers

The extension can send text to a provider the user has configured for summarization, with listed options including OpenAI, Anthropic, Google Gemini, DeepSeek, and xAI.

Transfer context into another chat

The privacy policy states that user data is used to support the user-facing feature of injecting captured context into another supported AI chat.

Keep API keys on the device

API keys for configured providers are stored encrypted at rest in chrome.storage.local, with the encryption key generated locally on first install.

Work without account sign-up

The homepage states that Prompt Bridge is free and does not require sign-up, which lowers the setup overhead for individual users.

Practical workflows

Continue a long research thread
A user can capture a conversation from one AI chat and move that context into another platform instead of re-explaining the full background and constraints.
Switch between different model strengths
Someone comparing responses from different AI providers can preserve the same prompt history while moving the work into another supported chat interface.
Resume work after closing a browser session
Because threads are stored locally, users can return later, retrieve the saved context, and continue from the same point without rebuilding the conversation.
Summarize before handing off a prompt
A user can trigger summarization through a configured provider to condense a longer exchange before injecting that context into a new chat.
Manage personal prompt archives
The local storage model and export/delete controls make the extension suitable for users who want to keep or clear their own AI conversation history on demand.

Pros and Cons

Pros

Works locally on the user’s device instead of sending conversation data to a publisher-controlled server.
Supports a capture-and-transfer workflow for continuing AI conversations across supported platforms.
No sign-up is required according to the homepage.
API keys are stored encrypted at rest on the device.
Users can export, delete, or clear stored data from the extension.

Cons

The extension only covers the AI platforms explicitly supported by the product.
Summarization requires connecting a third-party AI provider chosen by the user.
The website does not provide clear pricing details beyond stating that the extension is free on the homepage.

FAQ

What does Prompt Bridge do?

It is a Chrome extension that captures AI conversation context and lets users transfer that context into another supported AI chat so they can continue the same thread.

Which browsers are supported?

The homepage states that Prompt Bridge works on Chrome, Edge, and Brave.

Which AI platforms are supported?

The privacy policy explicitly mentions supported sites including ChatGPT, Claude, Gemini, Grok, and DeepSeek for context capture.

Does Prompt Bridge store my conversations on its servers?

No. The privacy policy says the publisher operates no server and that conversation threads are stored locally on the device.

How much does Prompt Bridge cost?

The homepage says the extension is free, but the pricing page itself was not available in the captured content, so no further plan details are shown.

Quick Facts

Category: AI Chat / Productivity
Product type: Chrome extension
Website: promptbridge.co
Browser support: Chrome, Edge, Brave
Pricing: Free, per homepage copy
Data handling: Local-first; no publisher server for extension data