---
title: opacity
framework: mapkitjs
role: symbol
role_heading: Instance Property
path: mapkitjs/tileoverlay/opacity
---

# opacity

A number that indicates a tile’s opacity.

## Declaration

```data
get opacity(): number;
set opacity(opacity: number);
```

## Discussion

Discussion Opacity can be a decimal value ranging from 0 to 1, inclusive: An opacity value of 0 indicates tiles aren’t visible. An opacity value of 1 indicates tiles are completely opaque. A tile overlay with an opacity of 1 can still have an alpha channel and allow underlying overlays or the default tiles to show through. The default value is 1.

## See Also

### Setting overlay appearance

- [maximumZ](mapkitjs/tileoverlay/maximumz.md)
- [minimumZ](mapkitjs/tileoverlay/minimumz.md)