This does not change size of the image in pixels, nor does it affect appearance -- it is lossless compression. This requires GraphicsMagick (recommended) or ImageMagick to be installed.

resize(filename, geometry)

## Arguments

filename Character vector containing the path of images to resize. Scaling specification. Can be a percent, as in "50%", or pixel dimensions like "120x120", "120x", or "x120". Any valid ImageMagick geometry specifation can be used. If filename contains multiple images, this can be a vector to specify distinct sizes for each image.

## Examples

if (interactive()) {
# Can be chained with webshot() or appshot()
webshot("https://www.r-project.org/", "r-small-1.png") %>%
resize("75%")

# Generate image that is 400 pixels wide
webshot("https://www.r-project.org/", "r-small-2.png") %>%
resize("400x")
}