GPT-Zip.Link is a powerful optimization tool that focuses on compressing web content into pure information, which can be used in Retrieval-Augmented Generation (RAG) processes for GPT-4 prompts. The tool helps reduce the number of required input tokens by up to 87%, making GPT-4 queries more cost-effective. It integrates easily with existing systems, ensuring users can seamlessly leverage its benefits without additional hassles.