A.I. Gigapixel - AI based image resizer
Video Enhance AI - This post offers you a list of video enhancer, even including video quality enhancer powered by AI. Find out how to upscale video here.
AI Img Enlarger - Enlarge Images Without Losing Quality Online
AVCLabs Video Enhance AI - AVCLabs Video Enhancer AI is the best Video Enhancer and Upscaler to enhance video quality and upscale the video resolution from SD to HD, HD to 4K, and up to 8K.
waifu2x - Online/Offline tool to upscale images
DVDFab Enlarger AI - World's 1st video enhancer with AI upscaling to improve video resolution and quality. Using this AI video upscaling solution, you can upscale 1080p to 4k quickly | DVDFab Enlarger AI