AI Image Upscaler

AI Image Upscaler is a free online tool that uses artificial intelligence to upscale images up to 4x their original resolution. It offers three models: Diffuser, which excels at restoring poor-quality photos and small images with realistic textures; Plus, which is fast and ideal for upscaling art and drawings; and General, which supports very large outputs up to 256MP. The tool is free for small-scale use with a daily quota, requires no sign-up, and supports bulk processing, face restoration, and transparent images (with Plus and General models). Processed images are automatically deleted after three hours. The service is donation-funded, with paying users prioritized during high demand.