Supported browsers
| Browser | Support |
|---|---|
| Chrome | Supported |
| Firefox | Supported |
| Edge | Coming soon |
| Opera | Coming soon |
Supported AI sites
The extension activates on these sites automatically:- ChatGPT: chatgpt.com and chat.openai.com
- Claude: claude.ai
- Gemini: gemini.google.com
Installation
Install the extension
- Chrome
- Firefox
Visit the Promptr listing in the Chrome Web Store and click Add to Chrome.Once installed, the Promptr icon appears in your browser toolbar. Pin it for easy access by clicking the puzzle-piece icon in your toolbar and pinning Promptr.
Support for Edge and Opera is coming soon.
Sign in
Click the Promptr icon in your toolbar. The extension opens a login screen.Sign in with Google or your email address, the same credentials you use at app.promptr.ai.If you have more than one workspace, you’ll be prompted to pick which one to open. You can switch workspaces from the sidepanel at any time.
Your blocks sync in real time through your account. You need to sign in for the extension to access your library. If you want to explore first without an account, click Try as guest. Your guest blocks will migrate to your account when you sign up later.
Open the sidepanel
Navigate to ChatGPT, Claude, or Gemini. To open the Promptr sidepanel:
- Chrome: Click the Promptr icon in your toolbar, or right-click the page and select Open Promptr sidepanel
- Firefox: Click the Promptr icon in your toolbar
Guest Mode
Don’t have an account yet? You can try Promptr directly from the extension without signing up. Click Try as guest on the login screen to get started right away. In guest mode, your memory blocks are stored locally in your browser — nothing syncs to the cloud. You can still create blocks, browse your spaces, and insert content into ChatGPT, Claude, or Gemini just like a full account. The main limitation is search. Guest mode uses keyword matching to surface suggestions in the Enhance tab, so suggestions are based on exact or partial word overlap with what you’re typing. Full semantic search — which finds relevant blocks based on meaning, even when the wording doesn’t match exactly — requires a Promptr account. Keyword matching is still a great way to experience the core idea: having the right context ready the moment you need it, without leaving the chat.Sidepanel views
Once the sidepanel is open, you can switch between four views using the navigation icons.Enhance
The default view. Promptr watches what you type in the AI tool’s chat input and automatically surfaces matching blocks from your library. Suggestions appear in real time as you type a new message.- Click a block to insert its content into the chat input
- Filter suggestions by space, tag, or creator using the filter bar
- Click Reload to re-run the search with your current input
Enhance only triggers on new chats, not existing conversations. This prevents suggestions from appearing mid-conversation when they’re less relevant.
Browse
Manual exploration of your spaces and blocks. Use Browse when you know what you’re looking for or want to review your library.- Navigate into any space to see its blocks
- Filter by tag or creator
- Click a block to preview it, then insert it into the chat
History
Shows blocks you’ve recently used across all your AI tools. Jump back to something you inserted earlier without having to search for it again.Quick Add
Save a new block directly from the extension without opening the web app. Useful for capturing something mid-conversation. Paste in the content, give it a title, choose a space, and save.Inserting blocks
When you click a block, Promptr inserts its content into the active chat input. The exact behavior depends on the block’s AI behavior setting:| Behavior | What happens |
|---|---|
| Attach | Content is attached alongside your message as a separate context block. Recommended default for most blocks. |
| Inject | Content is inserted directly into the conversation as inline text. Best for instructions and rules. |
| Replace | Content replaces everything currently in the input. Best for complete prompt templates. |
Workspace switcher
Your current workspace is shown in the sidepanel navigation. Click on it to switch to a different workspace or, if you’re on a team workspace, to invite teammates.If a team workspace is paused due to a billing issue, the extension will show a notice and prompt you to resolve it in the web app at app.promptr.ai.