When you upload a PDF, Viesus first scans the file and detects how many images are inside. It analyzes each image to check if it needs enhancement or upscaling. Based on this analysis, only the images that require improvement are processed—everything else is skipped to save you credits.

Each processed image costs credits:

• Basic enhancement: 1 credit

• Enhancement + upscaling: 4 credits

This gives you full transparency before using any credits.