I use adobe lightroom. It has an enhanced algorithm that really does a very good job at upscaling images. You might also try https://imglarger.com/. Source: over 1 year ago

But this time I just googled and ended up with https://imglarger.com/ that did the job well. Source: over 1 year ago

I don't, but try imglarger.com, it's A.I. That scales up an image, I always get amazing results. Source: almost 2 years ago

Hey, this picture looks so cooool!! I save your original image and upload it to imglarger.com to sharpen it. Here is the result. I am not sure if it is what you want. But I think the the color and contrast is better after the image is sharpened by imglarger. Source: almost 2 years ago

Image was upscaled with imglarger.com as Dall.E's output images are way too small. Source: almost 2 years ago

Colorization/restoring old photos: Photoglory, Vance AI. Source: 12 months ago

There is plenty of free AI tools online that will restore that for you, then you can print new ones, and immortalize it in the cloud. https://vanceai.com/old-photo-restoration/. Source: over 1 year ago

Pictures from the past are a wonderful way to relive happy memories. VanceAI can help me restore old photo using AI technology and colorize old photo for free, which is a really exciting discovery. it's like having a time machine that keeps memories alive forever... - Source: dev.to / almost 2 years ago

Try out this artificial intelligence, does wonders, blows me away every time. https://vanceai.com/old-photo-restoration/. Source: almost 2 years ago

Despite VanceAI Image Sharpener, VanceAI provides multiple online photo editing features such as VanceAI Photo Restorer, VansPortrait, BGremover, etc. And its API service for industry developers to combine VanceAI's image editing features to their photo editing application to achieve higher work efficiency and quality are also available. Source: about 2 years ago