Your AI prompts, everywhere you type
Prompt Box is a local-first Chrome extension that stores your best AI prompts and expands them into any text field with a keyboard shortcut. No account. No servers. No tracking.
Text expansion everywhere
Type a shortcut and press Space, Tab, or Enter. Your full prompt lands in ChatGPT, Claude, Gmail, search bars, and sign-in fields.
Local-first and private
Your prompts live in your browser. No account required, no servers, no analytics, no tracking.
Organize with tags
Tag, filter, sort, and favorite your library. Find the right prompt in seconds.
One-click copy
Click any saved prompt and it is on your clipboard, ready to paste anywhere.
Right-click to save
Highlight great prompt text on any page and save it to your library from the context menu.
Import and export
Bring your prompt library from any tool with CSV import. Your data stays portable, always.
Take your library everywhere with Pro
Cloud sync across all your browsers and computers. From $2.99 a month, or $39 once for founding members.
See Pro pricingPrivate by default
Everything is stored locally in your browser. The extension makes no external connections unless you explicitly ask it to. Read the full privacy policy for the details.
Read the privacy policyFrequently asked questions
- What is Prompt Box?
- Prompt Box is a free Chrome extension that stores your AI prompts and expands them into any text field. You save a prompt once, give it a short shortcut, and from then on typing that shortcut anywhere in your browser drops in the full prompt. It is local-first: your prompts are stored in your own browser, and the free version needs no account.
- How does prompt expansion work?
- Type your shortcut in any text field and press Space, Tab, or Enter. Prompt Box replaces the shortcut with the full prompt text. If a site blocks direct insertion, Prompt Box copies the prompt to your clipboard instead so you can paste it.
- Which AI tools and websites does Prompt Box work with?
- Any site with a text field, because Prompt Box works at the browser level rather than integrating with one product. That includes ChatGPT, Claude, Gemini, and other AI chat tools, plus everyday fields like Gmail, search bars, and web forms. It never touches password fields.
- Where are my prompts stored?
- In your browser's extension storage on your own device. The free version makes no external connections, has no analytics, and no tracking. You can optionally use Chrome Sync to share prompts between your own Chrome profiles, and Prompt Box Pro adds opt-in cloud sync across different browsers and computers.
- Is Prompt Box free?
- Yes, and the free version is not a trial. You get unlimited prompts, text expansion, tags, search, favorites, and CSV import and export at no cost, forever. Prompt Box Pro is an optional upgrade that adds cloud sync across devices for $2.99 a month, $19 a year, or $39 once for a founding lifetime license while those spots last.
- Which browsers does Prompt Box support?
- Chrome and other Chromium-based browsers such as Microsoft Edge, Brave, and Arc. It is a Manifest V3 extension installed from the Chrome Web Store. There is no Safari or Firefox version today.