GPT-foolproof is a browser plugin for ChatGPT aimed at preventing OpenAI from imposing limitations on ChatGPT's output capabilities. It uses techniques such as browser fingerprint obfuscation, device feature simulation, and enhanced privacy protection to disguise user browsing behavior, thereby avoiding detection as a restricted account or contaminated IP by OpenAI. The main advantage of this plugin is its ability to improve the user experience when using ChatGPT on the web, preventing performance issues caused by account or IP constraints. It is particularly suited for users who frequently use ChatGPT for efficient communication and content creation, especially those demanding high-quality AI outputs.