Question: I'm looking for an online service that can improve photo quality by adjusting color, lighting, and sharpness.

If you want to fine-tune photos with color, lighting and sharpness, BeautyPlus is a good choice. This online service offers a variety of AI-powered tools that are designed to be easy to use. Its AI Image Enhancer can automatically improve photos with adjustments to color, lighting and sharpness, for example to restore old photos, upscale images for printing and other uses. BeautyPlus also offers tools to create photo collages, retouch faces and bodies, and more.

Another option is Remini, which uses AI to convert low-resolution photos and videos into high-resolution images. It offers tools for face enhancement, color tuning, noise reduction and background detail enhancement. Remini is good at fixing common photo problems like blur, camera shake and focus problems, and it can upscale photos and videos up to 2x without sacrificing quality.

If you need a tool that's geared specifically for high-resolution enhancements, Let's Enhance is a good choice. It can upscale and enhance blurry or low-resolution images to high resolution and high quality, and it offers tools like HDR filters for color grading and background removal. It's geared for creative professionals, printing and eCommerce.

Last, Pixble is a simple AI-powered tool that can instantly improve image quality by fixing lighting, color and tone problems. It automatically fixes common problems like noise reduction and sharpening blur, so it's good for marketing, e-commerce and creative professionals. Pixble offers flexible pricing plans and can be integrated with apps through its API, so it can be a fast and cheap way to improve photos.