API Catalog

Visualize and analyze the API overlap between standards specifications and type systems within browsers.

Browser information was gathered by traversing the type system within the latest available version of the top browsers. Specification data was gathered by extracting Web IDL definitions from notable web specifications. Note that an API that is shown as detected does not necessarily mean it functions per specification; where the absence of an API under an interface could be due to the browser supporting an API in a different part of the prototype chain. This data is made publicly available to help each browser vendor work toward the goal of a more interoperable web platform. For more information, visit our FAQ page.

APIs by interface

API NameSpecificationsMicrosoft EdgeGoogle ChromeMozilla FirefoxApple Safari
CanvasGradient
addColorStop
constructor
length 
name
prototype
CanvasPattern
constructor
length 
name
prototype
setTransform  
CanvasRenderingContext2D
addHitRegion   
canvas
clearHitRegions   
commit   
constructor
currentTransform   
drawCustomFocusRing    
height    
length 
name
prototype
removeHitRegion   
width    
DrawingStyle
constructor    
direction    
font    
getLineDash    
length    
lineCap    
lineDashOffset    
lineJoin    
lineWidth    
miterLimit    
name    
prototype    
setLineDash    
textAlign    
textBaseline    
ImageData
constructor
data 
height
length 
name
prototype
width
MouseEvent
constructor
length 
name
prototype
region  
Path2D
addPath 
addPathByStrokingPath    
addPathByStrokingText    
addText    
constructor
length 
name
prototype
TextMetrics
actualBoundingBoxAscent   
actualBoundingBoxDescent   
actualBoundingBoxLeft   
actualBoundingBoxRight   
alphabeticBaseline   
constructor
emHeightAscent   
emHeightDescent   
fontBoundingBoxAscent   
fontBoundingBoxDescent   
hangingBaseline   
ideographicBaseline   
length 
name
prototype
width
Touch
constructor 
length  
name 
prototype 
region