imagemagick.md

   1 ---
   2 title: Imagemagick
   3 layout: 2017/sheet
   4 intro: |
   5   A quick reference for common [Imagemagick](https://www.imagemagick.org) commands and switches.
   6 ---
   7
   8 ### Common options
   9
  10 | Option              | Description                     |
  11 | ------------------- | ------------------------------- |
  12 | `-resize 100x40`    | Resize to a dimension           |
  13 | `-crop 40x30+10+10` | (width)x(height)+(x)+y          |
  14 | `-crop 40x30-10-10` | (width)x(height)+(x)+y          |
  15 | `-flip`             | Vertical                        |
  16 | `-flop`             | Horizontal                      |
  17 | `-transpose`        | Flip vertical + rotate 90deg    |
  18 | `-transverse`       | Flip horizontal + rotate 270deg |
  19 | `-trim`             | Trim image edges                |
  20 | `-rotate 90`        | Rotate 90 degrees               |
  21
  22 ### Resize to fit
  23
  24 ```sh
  25 convert input.jpg -resize 80x80^ -gravity center -extent 80x80 icon.png
  26 ```
  27
  28 ### Convert all images to another format
  29
  30 ```sh
  31 mogrify -format jpg -quality 85 *.png
  32 ```
  33
  34 ### Make a pdf
  35
  36 ```sh
  37 convert *.jpg hello.pdf
  38 ```
  39
  40 ### References
  41
  42 - <http://www.noah.org/wiki/ImageMagick>
  43 - <https://www.imagemagick.org/>