Portrait relight guide

Start

The tool opens with two sample pictures, A and B, and the Raking stone preset. You see picture A, lit from one side. The picture fills the frame; the panel sits beside it.

What you need

• A current browser with WebGL. Chrome, Edge, Firefox and Safari all have it.
• One or two pictures of your own, if you want them. Any image the browser can open works; the samples are there until you swap them. It does not look for faces, so any picture can be relit.

Your first result

1. Open Portrait relight and tap the picture anywhere. The key light circles the picture and stops where the run ends.
2. Press a preset under Presets, such as Bronze idol, then press Replay at the top of the panel to watch its light move.
3. Press Sweep cut, then tap the picture. A band of light crosses the frame and leaves picture B behind it. Tap again to go back to A.
4. At the top of the panel, press the Image A and Image B tiles to pick your own pictures, or drop two at once.
5. Press Save PNG for a still, or Record video to keep one full run.

Good to know

• Where you tap does not matter: the light's path comes from the sliders. A tap during a run does nothing; Replay always starts again at once.
• Moving any slider takes the highlight off the preset. When no run is playing, the frame shows the change at once.
• The frame takes the shape of picture A. Picture B is stretched to that shape, so two pictures of the same shape look best.
• On a phone the controls sit in a bar at the bottom of the screen. Tap the bar to open them.