Let's Enhance is a general-purpose tool that can upscale and otherwise improve blurry or low-resolution shots to high resolution. It's got options for HDR filters for color grading, background removal and upscaling to 4K and beyond. It's geared for creative professionals, printing, eCommerce and real estate, so it's a good option if you want to improve image quality and print quality.
Another option is Remini, which can turn low-resolution photos and videos into high-resolution shots. It's got options for face enhancement, noise reduction and background detail enhancement. Remini can fix common photo problems like blur and focus issues, so it's good for social media, heritage preservation, printing services and e-commerce.
If you need a collection of photo editing tools, VanceAI is a good option. It's got tools for upscaling, sharpening, denoising and background removal, among other options. VanceAI can handle batch processing and larger image sizes, so it's good for professionals and business owners who have a lot of images to process.
If you prefer a more basic, easy-to-use interface, Pics Enhancer could be a good option. It can automatically improve low-resolution images by sharpening and increasing detail. It can upscale images up to 16X resolution, and it's good for eCommerce product images and other situations where high-quality photos are important.