a5paper b5paper with report class in pdf by pdflatex?

Question

Selection of paper size within report class, changes rendering.

However pdf pages remains bigger.

How to make pdf made with pdflatex to be a5,b5 ?

Example:

\documentclass[a5paper]{report}
\usepackage{lipsum}
\begin{document}
\lipsum[1-5]
\end{document}

Answer 1

Try using \usepackage[a5paper]{geometry}.