# Where can I find the TikZ spy package

Where can I find the TikZ `spy` package?
I found a great article here: How to create magnified subfigures and corresponding boxes for portions of a large image

Even with Google and StackExchange search I can’t find a site to download the package. Can anyone help me?

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If you check the accepted answer on the question you linked to, you will find lines containing `\usepackage{tikz}` and `\usetikzlibrary{spy}`. –  Qrrbrbirlbel May 10 '13 at 18:22
if i try this: `\usepackage{tikz} \usepackage{pgfplots} \usetikzlibrary{spy}` i get this message: `! I can't find file tikzlibraryspy.code.tex...`. Without `\usetikzlibrary{spy}` tikz works fine. –  romi1013 May 10 '13 at 18:28
You most likely have an outdated PGF/TikZ installation. You should update your TeX distribution. –  Qrrbrbirlbel May 10 '13 at 18:36
`spy` is a `TiKZ` library not a `package` so it comes with `TiKZ` although its name in CTAN is `pgf`.
As Qrrbrbirlbel explains, you need to first load `Tikz` with `\usepackage{tikz}` and later any `tikzlibrary` with `\usetikzlibrary{spy}`.