CodeFormer is an open-source project dubbed as the ultimate AI tool for removing mosaics. It utilizes state-of-the-art neural network AI technology to precisely restore various old, blurry, damaged, and black-and-white photos and videos. The project offers features such as facial restoration, overall image enhancement, face coloring, and facial repair. To make it user-friendly, the author has created a deployment-free, unzip-and-use offline package. Users simply need to place the photos they wish to restore into the designated folder, run the corresponding command file, and they will receive the restored high-definition images. CodeFormer's powerful functionality and stunning restoration effects can significantly enhance the clarity and details of images. Interested individuals can obtain the offline package for free and give it a try.