XL V2 free for a full 30 days use Fractals method an there should be plugin (guess not freeware) for photoshop Analyzer 1.36.1 i think it has filter (What's new in Image Analyzer 1. Scale Image Rescale plugin interpolation Photo Resizer Resize not expensive, use Bilinear, Bicubic (sharp and smooth) and Biquadratic method (sharp and smooth). No intention in that regard, just enlarging with retaining quality is little time consuming with freeware, you have to try based on photo result is different, you can check the following and perhaps they can be of help.The GIMP6.15. If you add or edit images to/this cloud folder your saved settings will be applied.). (Hint: sizzlepig monitors cloud folders for any updates or revisions to files in those folders. Go back to the folder where you placed the images, and you will have an 'output' folder that sizzlepig created. If you are happy with how they look, hit 'process'.10. If you want to crop or fine-tune an image you can do this while you are previewing, on the same page.9. You will now see all of your images resized and on one page.8. Make a blueprint, pull the corners or type in the size (1920x1080)(hint: if you want a copy for desktop and a copy for retina display check 2x, you will automatically get both)6. Place the folder in one of these: Box, Dropbox, Google Drive or your desktop.3. It's very simple and you control how each will look visually without needing to download software or having photoshop.1.
Monitor everything in your stack, just like that. You can make a folder of images into an unlimited number of sizes very fast. SmillaEnlarger is a small graphical tool ( based on Qt ) to resize, especially magnify bitmaps in high quality.