How can import high res images

hi friends hows your day? i want to ask a question . how can i import high res images because when i export i can see pixels the original image does not have any pixels showing

Sketchup by default limits the size of images.
Go to Window/Preferences/Opengl and tick the box Use Maximum texture
This will allow larger but there is still a limit.

thank you my friend have a great day bro

the default is 1024x1024, Max texture size wil double that. If you need more, you can split the original image.