Start with a good source image
The quality of your cutout is limited by the quality of the source image. Use high-resolution photos with clear subject-background separation, good lighting, and minimal motion blur. Images with busy backgrounds, low contrast between subject and background, or heavy compression will produce poor results regardless of the tool used. When possible, photograph subjects against plain, contrasting backgrounds.
Work non-destructively
Always use layer masks instead of permanently deleting pixels. Masks let you refine the cutout at any time, restore accidentally removed areas, and adjust edge softness without redoing the entire selection. Save your working file in a format that preserves layers (PSD, XCF, or TIFF) and export a separate PNG or WebP file with transparency for final use.
Check edges at 100% zoom
Always inspect your cutout at 100% zoom (actual pixels) to catch edge artifacts, halos, and leftover background pixels that are invisible at smaller zoom levels. Pay special attention to hair, fur, and fine details. Zoom in to 200% or 400% for edge refinement work. A cutout that looks clean at 50% zoom may reveal significant problems when viewed at full size or placed on a contrasting background.
Export as PNG or WebP with transparency
Always export cutouts as PNG or WebP with an alpha channel to preserve transparency. JPG does not support transparency and will fill transparent areas with white, ruining the cutout. PNG offers universal compatibility; WebP produces smaller file sizes with equivalent quality. For web use, WebP is preferred for faster loading, but keep a PNG version for applications that do not support WebP.
Remove color fringing and halos
After removing a colored background, the subject edges often retain a fringe of the background color (green halo from green screens, white halo from white backgrounds). Fix this by using the "Decontaminate Colors" option in Photoshop, or by manually painting over edges with a color from the subject on a clipped layer. For white halos, slightly contract the selection by 1-2 pixels before creating the mask.
Test on multiple backgrounds
Always preview your cutout on both light and dark backgrounds before finalizing. A cutout that looks clean on white may reveal gray halos or rough edges on black. Place the cutout over a solid color layer and toggle between white, black, gray, and a busy pattern to identify any edge artifacts. This step catches problems that would be visible when the image is used in different contexts.