AI Input Assist
Gemini Enter Key Control
Prevent accidental Enter-key sending in Gemini and Gemini Notebook, formerly NotebookLM.
Free Chrome extension Edge add-on AI input assistant No data collection No external communication
Recommended for
✍️
People who write long prompts in Gemini
Designed for users who want to write long prompts and messages in Gemini without accidental sends.
📝
Gemini Notebook users (formerly NotebookLM)
Useful for organizing notes and questions in Gemini Notebook, formerly NotebookLM, while keeping line breaks and sending separate.
🛡️
Users who want to prevent accidental sends
Helps reduce mistakes where pressing Enter sends the message instead of adding a line break.
⌨️
Users who want separate send keys
Choose a send key such as Shift+Enter, Ctrl+Enter, or Cmd+Enter.
Features
・Use Enter to insert a new line
・Send with Shift+Enter, Ctrl+Enter, or Cmd+Enter
・Supports chat on the official web versions of Gemini and Gemini Notebook, formerly NotebookLM
・Lightweight popup settings
Benefits
・Avoid sending messages when you meant to add a line break
・Write longer prompts with less interruption
・Match the send key behavior to your workflow
Description
Gemini Enter Key Control is a Chrome / Edge extension that helps prevent accidental Enter-key sends in Gemini and Gemini Notebook chat input fields. Gemini Notebook was formerly known as NotebookLM.
When writing long prompts, notes, or questions in Gemini or Gemini Notebook, it is easy to send a message by mistake when you only meant to add a new line. Gemini Notebook was formerly known as NotebookLM. This extension adjusts the Enter key behavior so you can write more calmly, like in a regular text editor.
■ Use Enter for line breaks
Use the Enter key to insert line breaks, making it easier to write longer questions, notes, and prompts.
■ Send with Shift / Ctrl / Cmd + Enter
Send messages with Shift+Enter, Ctrl+Enter, or Cmd+Enter. This clearly separates line breaks from sending and helps reduce accidental submissions while writing longer text.
■ Supports Mac keyboards
On Mac, you can send with Cmd+Enter, so the extension feels natural to use with Mac keyboards.
■ Designed for Gemini and Gemini Notebook, formerly NotebookLM
This extension is designed for use with Gemini and Gemini Notebook, formerly NotebookLM. It does not work with other services.
■ Privacy and local processing
Gemini Enter Key Control does not send your input or page content to external servers.
Key behavior changes and settings are processed locally in your browser.
Privacy and security
The extension does not collect input data or send it to external servers.
It runs only on supported Gemini and Gemini Notebook pages.
Gemini Notebook was formerly known as NotebookLM.
FAQ
What is Gemini Enter Key Control?
Gemini Enter Key Control is a browser extension for Chrome and Microsoft Edge that helps prevent accidental Enter-key sends in Gemini input fields. It lets you use Enter for line breaks and send with the key combination you choose.
How does the Enter key behavior change?
Depending on your settings, Enter can insert a line break instead of sending the message. You can use Shift+Enter, Ctrl+Enter, or Cmd+Enter to send.
Can it prevent accidental Enter-key sends on Mac?
Yes. You can use it on Mac with Google Chrome or Microsoft Edge. When using Gemini on Mac, it helps prevent accidental Enter-key sends and keeps line breaks separate from sending.
Do I need detailed setup after installation?
In most cases, it is designed to work right after installation. It uses a convenient initial state based on your OS and display language, and you can change the send key or behavior mode as needed.
Can I use it with services other than Gemini or Gemini Notebook, formerly NotebookLM?
No. This extension is designed for use with Gemini and Gemini Notebook, formerly NotebookLM. It does not work with other services.
What should I do if changed settings are not applied?
Reload the target page after changing settings. Tabs that are already open may not immediately pick up settings right after installation or an update.
Is this extension safe?
This extension is designed not to collect your input or conversation content and not to send it to external servers. Settings are saved in your browser, and the extension runs with the minimum required permissions. The source code is published on GitHub for transparency, so you can review how it works. Please see the privacy policy for details.
Is Gemini Enter Key Control free to use?
Yes. Gemini Enter Key Control is free to use.
How do I uninstall it?
You can remove it from your browser's extensions management page. In Chrome, open chrome://extensions. In Edge, open edge://extensions.
Install now
Use it for free. Add it from the Chrome Web Store or Microsoft Edge Add-ons.
