Compositor node

The Compositor places up to eight images on top of a background image and saves the result as one picture. It runs in your browser and costs nothing.

Wire the bottom image into the background input. Wire each image you want on top into the layers input. Layers stack in the order you wired them, the first one lowest.

1. Add a Compositor node.
2. Wire a background, then one or more layers.
3. In the Inspector, set each layer's position, size, opacity and blend mode.
4. The node updates by itself, or press Apply.

Blend modes change how a layer mixes with what is under it. Multiply darkens, Screen lightens, and Overlay adds contrast. Normal simply covers what is below.

Text, shapes and video layers are not part of the Compositor yet.