添加水印

[shaodongtang]

利用 TikZ 在 LaTeX 文档中制作水印效果
https://liam0205.me/2014/04/22/LaTeX-watermark/
\documentclass{article}
\usepackage{tikz}
\usepackage{xcolor}
\usepackage{eso-pic}
\newcommand{\watermark}[3]{\AddToShipoutPictureBG{
\parbox[b][\paperheight]{\paperwidth}{
\vfill%
\centering%
\tikz[remember picture, overlay]%
\node [rotate = #1, scale = #2] at (current page.center)%
{\textcolor{gray!80!cyan!30}{#3}};
\vfill}}}
\usepackage{blindtext}
\begin{document}
\watermark{60}{10}{DRAFT}
\blinddocument
\clearpage
\end{document}