Remove a background and keep control of the edge
Automatic background removal is a starting point. A mask lets you bring back a missing detail or tidy an edge without deleting the original picture.
Photostar is a free online Photoshop alternative that runs in your browser. There is no account to make, and your photos stay on your device.
Open the photo and choose its layer
Open Photostar and pick a photo from your computer. In the Layers panel, select the picture you want to cut out. A clear subject against a different background is easier to cut out.
Run background removal
Choose Layer → Remove Background. The first use downloads a model after a notice. The model runs on this device; the photo is not uploaded. Download time and processing speed depend on your connection, browser and hardware.
Refine the mask
Background removal adds a layer mask. Click its thumbnail in the Layers panel, then paint white to restore part of the picture or black to hide it. A smaller, softer brush helps around hair, fabric and curved edges. Zoom in, but check the cutout at its final size too.
Export with transparency
Choose File → Export As, then select PNG. Hide any background layers you do not want in the result. JPEG cannot store a transparent background. Save a .pxed project as well if you want to refine the mask later.
What if the AI misses part of the subject?
Paint it back through the mask, or make a selection by hand. Fine hair, reflections, glass and colours that blend into the background can need more work. A mask keeps those corrections reversible.
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