Zoom to 100% and inspect hair, edges, fabric, and repeating patterns. Look for halos, doubled outlines, and newly invented texture that is inconsistent with nearby areas.
An unblurred image can look sharper while becoming less faithful to the source. Fine lines, skin texture, lettering, and small objects are especially easy to overinterpret. Preserve the original file and decide whether the result is meant for viewing, design, or evidence before editing.
For a quick comparison, unblur image online can process a copy while you keep the source beside it. I am connected with the tool. Judge the output at the size people will actually see, then zoom in only to inspect suspicious edges and invented-looking detail. A pleasing result is not proof that the missing information was recovered.
The steps below form a repeatable review: set a baseline, inspect a crop, compare specific features, and document what changed. For records or consequential decisions, keep the original and disclose any enhancement.