IQA-Server offers a suite of tools for evaluating image quality using models from the `pyiqa` library. It provides metrics such as Mean Opinion Score (MOS), sharpness, brightness, colorfulness, and contrast, along with in-depth analysis of bitrate, compression algorithms, spatial information, entropy, dynamic range, blurriness, blockiness, color balance, saturation, noise level, exposure level, vibrance, and color variance. This comprehensive assessment allows users to gain a detailed understanding of image characteristics and quality without needing reference images.