# I built a free Chrome extension that drops your saved prompts into any text box with // > Source: > Published: 2026-09-21 13:17:15+00:00 I found myself typing the same prompts into ChatGPT and Claude over and over. Rewording them slightly each time. Losing track of which version worked. So I built Promptbar — a Chrome extension that lets you save your own prompts and insert any of them into any text box on any page by typing `//`. How it works: `//` in any text box (ChatGPT, Claude, Gemini, a support ticket, anywhere) You can use `{{variables}}` inside a prompt, so one saved template covers many variations without editing it each time. Everything is stored locally. No account, no sign-up, no cloud, no AI service of its own — it only inserts text you wrote. One thing to know upfront: it needs broad host permissions to make the `//` trigger work on any page. That's a real trade-off. Nothing is collected or transmitted — the data never leaves your browser — but I know that's the first question, so I'm answering it here. It's free. No paid tier exists today. I'm a designer, not an engineer — this was built with a lot of AI help. Happy to answer anything about what it does or why it works the way it does.