The Overlay tool in Polarr allows you to stack images or effects on top of a base image. This tool is how you'll be able to superimpose two images together or some of the preset overlays and their effects with Polarr.
Default effects include
- Duotone - Dust & Scratches
Effects available in Polarr like light leaks, clouds, and the weather should be pretty self-explanatory. These allow you to add the effect to your images with just a few taps. Other effects like gradients and duotone are a little more complex, so we've given them their own entry in the wiki. Learn more about them by checking out their pages.
Using the tool
Finding the Overlay tool
Look for the icon with what looks like three stacks of paper if you want to access the overlay tool. It's in here you'll the overlay tool and all of the effects you can apply to your photos.
Selecting an overlay
You can tap the … (All) to view all of the different effects included in the overlay tool. Custom is where you can see and add your own images. Otherwise, scroll down to see all of the different effects in the app. Once you tap an effect it is applied to the image.
Manipulating an overlay
Once you've selected an effect or image, you can manipulate it to your artistic style. Use your fingers or mouse to reposition the image and resize it. Once you've done that, you can change the opacity of the layer and the blending mode. You'll find most blending modes you could need like normal, brighten, darken, contrast, and transfer.
That's it! Click the little check mark to confirm your edit and you're done. Play around with the tool to get familiar with it. You'll notice most options for manipulation are the same, but gradient and duotone have a few more options unique to those effects.