R: Run OptiPNG on all PNG files under a directory

optipng {xfun} | R Documentation

## Run OptiPNG on all PNG files under a directory

### Description

Call the command `optipng` via `system2()` to optimize all PNG files under a directory.

### Usage

    optipng(
      dir = ".",
      files = list.files(dir, "[.]png$", recursive = TRUE, full.names = TRUE),
      ...
    )

### Arguments

`dir` | Path to a directory.
`files` | Alternatively, you can choose the specific files to optimize.
`...` | Arguments to be passed to `system2()`.

### References

OptiPNG: http://optipng.sourceforge.net.

[Package xfun version 0.31 Index]