Animation

This is the top-level JSON object, describing the document, layers, assets, etc.

The size of the canvas is determined by w and h. Duration is expressed in frames with op, and the framerate is in fr.

Most of the contents are in layers and assets.

Attribute	Type	Description
`layers`	`array` of Precomposition Layer or Solid Color Layer or Image Layer or Null Layer or Shape Layer or Text Layer or Audio Layer or Camera Layer or Data Layer	An array of layers (See: Lists of layers and shapes)
`nm`	`string`	Name, as seen from editors and the like
`mn`	`string`	Match name, used in expressions
`assets`	`array` of Image or Precomposition or Sound or Data source	An array of assets
`v`	`string`	Lottie version, on very old versions some things might be slightly different from what is explained here
`ddd`	0-1 `integer`	Whether the animation has 3D layers. Lottie doesn't actually support 3D stuff so this should always be 0
`fr`	`number`	Framerate in frames per second
`ip`	`number`	"In Point", which frame the animation starts at (usually 0)
`op`	`number`	"Out Point", which frame the animation stops/loops at, which makes this the duration in frames when `ip` is 0
`w`	`integer`	Width of the animation
`h`	`integer`	Height of the animation
`comps`	`array` of Precomposition	List of Extra compositions not referenced by anything
`fonts`	Font List	Fonts
`chars`	`array` of Character Data	Data defining text characters as lottie shapes. If present a player might only render characters defined here and nothing else.
`meta`	Metadata	Document metadata
`metadata`	User Metadata	User Metadata
`markers`	`array` of Marker	Markers defining named sections of the composition.
`mb`	Motion Blur	Motion Blur
`slots`	`object`	Available property overrides

Metadata

Some (but not all) lottie files will have a metadata object describing the program used to create the file and other useful information:

Attribute	Type	Description
`a`	`string`	Author
`d`	`string`	Description
`tc`	`string`	Theme Color
`g`	`string`	Software used to generate the file

Attribute	Type	Description
`filename`	`string`	Filename
`customProps`	`object`	Custom Properties