Generate a derivative on the fly with a transformation (such as cropping, scaling, filling) applied to it. More information about this feature can be found in our [Knowledge Base item](https://support.bynder.com/hc/en-us/articles/360018559260-Dynamic-Asset-Transformations-DAT-). Image operations can be passed as `io` parameters in the form of `transform:{operation},{param1}:{value1},{param2}:{value2},...`. It's possible to specify several operations: `?io={operation1}&io={operation2}&...`. The operations will be applied in the same order they are passed in the url. These are the possible image operations and their parameters:

Operation	Parameter	Possible values
`background`	color	color name (yellow, black, etc.) or hexadecimal (rgb, rrggbb)
`crop`	width	integer
	height	integer
	x	integer
	y	integer
	gravity	topleft / top / topright / left / center / right / bottomleft / bottom / bottomright
	shape	circle / square
	blur	integer
	background	color name (yellow, black, etc.) or hexadecimal (rgb, rrggbb)
`extend`	width	integer
	height	integer
	background	color name (yellow, black, etc.) or hexadecimal (rgb, rrggbb)
`fill`	width
	height
	gravity
	aspectratio	(integer) x (integer)
`fit`	width	integer
	height	integer
`flip`	(no parameters)
`mirror`	(no parameters)
`rotate`	angle	integer between 0 and 360
	background	color name (yellow, black, etc.) or hexadecimal (rgb, rrggbb)
`scale`	width	integer
	height	integer

Dynamic Asset Transformations