PNG is a container, not a time machine
JPEG already quantized the photo. Wrapping those pixels in PNG stops further JPEG damage; it cannot un-blur a 400-pixel thumbnail. Use this hub for format gates. Use JPG to Transparent PNG when you actually need a cut-out.
Free versus Pro
Opaque format change is free for eligible singles. Folders and background removal use VPS or Vision time — labeled, not a surprise.
When to stay in JPEG
Photographs for the web often belong as JPEG. Convert only if a tool, printer, or template refuses that format.
Related next
Need the reverse? PNG to JPG flattens alpha onto white. Need a logo cut-out? That is the transparency spoke, not this hub.