Reviewers describe AI Image Upscaler as a fast, simple tool that reliably improves low-resolution images while keeping detail clean and artifacts low. People use it for wallpapers, scans, textures, design work, event photos, print assets, and even old images for 3D modeling or notes, often saying results beat other upscalers or basic Photoshop resizing. The main caveats are narrow but consistent: text can turn blurry or curvy, some users want more scaling options and better control before processing, and a few saw limited gains or minor color issues.