It is important you define your thumbnail with filters configuration before uploading any pictures. If you added new thumbnails or changed some thumbnail filters, after some media has already been uploaded you can run a refresh command to regenerate all thumbnails.
The following command will refresh all thumbnails:
Change the RGB color values of the current image on the given channels red, green and blue. The input values are normalized so you have to include parameters from 100 for maximum color value 0 for no change and -100 to take out all the certain color on the image.
Method converts the existing colors of the current image into a color table with a given maximum count of colors. The function preserves as much alpha channel information as possible and blends transparent pixels against a optional matte color.
Trim away image space in given color. Define an optional base to pick a color at a certain position and borders that should be trimmed away. You can also set an optional tolerance level, to trim similar colors and add a feathering border around the trimmed image.
Note: Resource intensive with GD driver. Use with care.
base: [required] Define the the point from where the trimming color is picked. For example if you set this parameter to bottom-right, all color will be trimmed away that is equal to the color in the bottom-left corner of the image.
Possible values are:
away: [optional] Border(s) that should be trimmed away. You can add multiple borders. as an array of values.
Possible values are:
By default the trimming is performed on all borders.
tolerance: [optional] Define a percentaged tolerance level between 0 and 100 to trim away similar color values. Default: 0
feather: [optional] Sometimes it may be useful to leave a untouched "border" around an object while trimming. Especially when trimming non-solid backgrounds you can expand (positive value) or contract (negative value) the space around the trimmed object by a certain amount of pixels. Default: 0
Resize the boundaries of the current image to given width and height. An anchor can be defined to determine from what point of the image the resizing is going to happen. Set the mode to relative to add or subtract the given width or height to the actual image dimensions. You can also pass a background color for the emerging area of the image.
width: [required] The new width in pixels of the image in absolute mode or the amount of pixels to add or subtract from height in relative mode.
height: [required] The new height in pixels of the image in absolute mode or the amount of pixels to add or subtract from height in relative mode.
Set a point from where the image resizing is going to happen. For example if you are setting the anchor to bottom-left this side is pinned and the values of width/height will be added or subtracted to the top-right corner of the image.
The possible values for this parameter are:
relative: [optional] Determine that the resizing is going to happen in relative mode. Meaning that the values of width or height will be added or substracted from the current height of the image. Default: false
bgcolor: [optional] A background color for the new areas of the image. The background color can be passed in in different color formats. Default: #000000