(PHP 4 >= 4.0.5, PHP 5, PHP 7) Convert JPEG image file to WBMP image file

(PHP 4, PHP 5, PHP 7) Draw a character vertically

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Get the index of the closest color to the specified color + alpha

(PHP 4, PHP 5, PHP 7) Output a PNG image to either the browser or a file

(PHP 4, PHP 5, PHP 7) Allocate a color for an image

(PHP 5 >= 5.5.0, PHP 7) Output a WebP image to browser or file

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Set the tile image for filling

(PHP 4 >= 4.3.0, PHP 5, PHP 7) Makes the colors of the palette version of an image more closely match the

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Set the blending mode for an image

(PHP 4, PHP 5, PHP 7) Load a new font int imageloadfont