webshot: resize – R documentation

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resize

Resize an image

Description

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.

Usage

resize(filename, geometry)

Arguments

`filename`	Character vector containing the path of images to resize.
`geometry`	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")
}

webshot

Take Screenshots of Web Pages

v0.5.2

GPL-2

Authors

Winston Chang [aut, cre], Yihui Xie [ctb], Francois Guillem [ctb], Barret Schloerke [ctb], Nicolas Perriault [ctb] (The CasperJS library)

Initial release