In this article
A transparent image background should let the design beneath it show through, including inside genuine openings in the subject. Before using a cutout, place it on light, dark and intended brand-color backgrounds, inspect the edges and reopen the exported file. A white backdrop or a painted checkerboard does not prove transparency.
The following is a practical review method for photographed or AI-generated artwork. It is not a comparison of removal tools or a claim about a particular Tong editing control.
Confirm transparency before polishing edges
Keep the source image and save a separate working copy. Move a solid-color layer beneath the cutout, then change its color. The area outside the subject should reveal each new color. If a white rectangle or checkerboard remains fixed, investigate whether that pattern is part of the image itself.
Adobe's Firefly background-removal documentation describes isolating a subject and says that downloading immediately after removal produces a transparent PNG. Whatever editor you use, inspect your own saved asset rather than relying on a preview or filename.
Review the cutout on three backgrounds
Start with a pale background and look for dark fringes. Switch to a dark background and look for pale halos or missed patches. Finally use the actual destination color, where a leftover trace of the old backdrop may become more distracting.
Review both near the intended display size and zoomed in. The close view helps locate a problem; the real-size view helps judge whether the repair improves the design. Avoid repeatedly eroding the whole outline to fix one small corner, because that can remove useful parts of the subject elsewhere.
Treat openings, soft edges and shadows deliberately
Imagine a fictional campaign asset showing a ceramic mug. Check the opening inside its handle: a trapped patch of the original background can survive even when the outer silhouette looks clean. Inspect the base too, and decide whether the original contact shadow belongs in the new scene.