Does one earn reward or sin who types the names of pornographic websites and then closes the device before they are displayed or when the images are displayed?

Whoever contemplates an evil deed but does not commit it, Allah records it for him as a complete good deed. This person is rewarded for abandoning it. However, he is in great danger unless Allah overtakes him with His kindness and mercy, because he is circling around the sin, and Satan might cause him to fall into it. Allah the Almighty said: "O you who have believed, do not follow the footsteps of Satan. And whoever follows the footsteps of Satan - indeed, he enjoins immorality and wrongdoing. And if not for the favor of Allah upon you and His mercy, not one of you would have been pure ever, but Allah purifies whom He wills, and Allah is Hearing and Knowing" (An-Nur: 21). So, he must seek refuge in Allah and take every path that protects him from falling into sin.