---
title: source-atop
framework: webkitjs
role: pseudoSymbol
path: webkitjs/canvasrenderingcontext2d/global_compositing_operation_constants/1805347-source-atop
---

# source-atop

## Overview

Overview Display the source image wherever both images are opaque. Display the destination image wherever the destination image is opaque but the source image is transparent. Display transparency elsewhere.