I suppose you use Vue 4? Then you find every thing about it in the User Guide page 100. Just input your render size as the image (page 100!) shows and render. What was your original image size? Bigger then 4000 pixels? Tht's nearly incredible. Smaller then 100 pixels? Incredible also. Do you have a paint program? Open your image in that program and see the size in pixels and KB. If you have more problems, just write again.