GIF and PNG: what happens when you convert
A GIF is built from frames with a limited palette. Converting a GIF to PNG gives you a single clean still frame with sharper edges and a smaller file.
How GIF stores images
The GIF format stores images as frames, and every frame uses a palette of at most 256 colors. That small palette is why GIF files stay compact, and also why smooth gradients or photographic detail can look grainy.
GIF also supports simple animation by replaying frames in sequence. A looping banner or sticker is usually a GIF, even when its individual frames are simple.
Why convert a GIF frame to PNG
When you convert a GIF to PNG, the tool captures the current frame and re-encodes it as a lossless image. PNG does not restrict colors to 256, so edges stay clean and gradients render smoothly.
The result is a standard still image that you can edit, upload, or place in a document. It is also usually smaller than the full animated GIF, because you keep only the frame you need.
Keep the GIF for animation
Conversion captures a still frame, not the motion. If you need the animation itself, keep the original GIF and convert a copy only when a still image is what the task requires.