I need to turn low density photo into HD. What is the maximum pixel or dimension I can add to a photo on your site? Are there other methods for this purpose?
If your screen resolution can handle it, you can scale images up to 2000x2000 pixels on LunaPic. HD is considered 1920 × 1080 , and you can use the Scaling Tool to resize images larger. While it may have some artifacts, it does try to upconvert the image as best it can.