ChatGPT Custom Instruction Switcher

ChatGPT Custom Instruction Switcher is a Chrome extension that helps users manage multiple sets of Custom Instructions for the ChatGPT web interface. Instead of manually editing the Custom Instructions field every time they need a different context, users can save instruction templates and switch between them instantly. The extension is available in both English and Japanese, making it accessible to a wider audience.

Key Features

• Template management: Users save their ChatGPT Custom Instructions as named templates. Each template stores a complete set of custom instructions that can include information about the user, preferences, formatting requirements, or context that ChatGPT should remember for future conversations.
• One-click switching: Saved templates are accessible through the extension interface. Clicking a template copies its content and inserts it into the ChatGPT Custom Instructions fields automatically. This eliminates the need for manual copy-paste from external notes files or text editors, saving time and reducing errors.
• Multiple use-case profiles: Users maintain different instruction sets for different contexts such as professional email writing, creative brainstorming, technical coding help, academic research, or language practice. Switching between profiles takes a single click.

How It Works

The extension adds a control panel to the ChatGPT web page. Users create new templates by entering their instructions into a form and giving each template a descriptive name. The extension stores templates locally in browser storage so they persist across sessions. When the user wants to apply a different set of instructions, they open the extension panel and select the desired template. The extension then pastes the saved instructions into the two Custom Instruction fields in the ChatGPT settings dialog and saves them automatically. The entire process takes seconds.

Intended Users

This extension is built for ChatGPT power users who regularly switch between different Custom Instructions depending on the task at hand. Professionals who use ChatGPT for both formal business writing and casual brainstorming benefit from maintaining separate instruction sets. Developers who need different coding context instructions for different programming languages and students studying multiple subjects also find the quick switching capability valuable. The built-in Japanese language support makes it particularly useful for users in Japan who prefer instructions in their native language.

Limitations

The extension works only with the ChatGPT web interface accessed through a browser. It does not function with the ChatGPT mobile application or API. Templates are stored locally in the browser, which means they are not synchronized across different computers or browser profiles unless the user manually exports and re-imports them. The extension has a small user base and a basic feature set focused solely on Custom Instruction management.