Separate the subject from the background, and keep both

The half a background remover throws away

Remove-background tools answer one question: "give me the subject." But most real work needs both halves — swap the background but keep it as an option, blur it, recolor it, put text between the two, or animate them at different speeds for a parallax effect. That requires the subject AND the background as independent layers, with the background complete behind the subject rather than left with a subject-shaped hole.

One button, two engines

Separate subject (free) runs a segmentation model in your browser. Nothing uploads, and the first use downloads the model once. Separate subject (server, 1 credit) runs our strongest model, which is what produced the examples below: individual hair strands, scarf fringe, and whiskers on a black dog against a dark floor, all preserved. Either way you get a Subject layer and the background underneath as separate, independently editable layers.

Then complete the background

After separation, one more button (Fill behind) reconstructs the background where the subject was standing. Now the background works as a photo in its own right: move the subject, shrink it, delete it, or replace it entirely, and nothing tears.

Edges you can still change your mind about

In the exported PSD, the separation is attached as a real layer mask, not baked-in transparency — open it in Photoshop or Photopea and refine the edge with a brush if you want a different crop of the hair. Prefer open tools? The same file exports as OpenRaster for GIMP and Krita, free and unlimited.