Techniques for blending images can saturate weak images with details from another. GIMP and other image-manipulation software enables you to stack two pictures, decrease the visibility of the top ...

It’s fairly easy to blend two images in GIMP. All you have to do is: Open the two Images in GIMP. Blend the images using layer opacity/blend mode/layer mask. Export the resultant image as JPEG/PNG.

When most of us are looking for a photo-editing tool, we immediately think of Photoshop. Adobe’s program is powerful and popular, but it’s pricey at $100—and that’s for the “light” version called ...