While not necessary to prove the Gospel, it's a fascinating support:
• The image is burned into the cloth in a way no known method (ancient or modern) can explain.
• 3D qualities are embedded into the image — discovered only through modern technology.
• The wounds match exactly what the Gospels say: pierced hands and feet, scourging, crown of thorns, side wound.
• No pigments, paints, or brushstrokes.
• Pollens and cloth weave match 1st-century Jerusalem.
If one were to believe it were a forgery, it would have to be a miracle-level one — made with no tools or knowledge that existed before microscopes, cameras, or radiation studies.