Use image upscaling software or AI super-resolution tools
Increase the image dimensions in an editor like Photoshop, GIMP, or Affinity Photo
Resample the image using bicubic, Lanczos, or AI-based interpolation
Start from the highest-quality original file available
Reduce noise and sharpen the image after upscaling
Export in a high-quality format such as PNG or TIFF
Avoid repeatedly resizing the same image
Use vector graphics instead of raster images when possible
Recreate the image at a higher resolution if it is a logo, icon, or illustration
Scan printed images at a higher DPI if creating a digital copy