A small logo looks crisp after being enlarged, while a screenshot of the same logo looks soft. The difference may come from how the images are represented rather than from a mysterious quality setting.
Shapes instead of only a pixel grid
MDN describes SVG as an XML-based format for two-dimensional vector graphics. Vector shapes can be rendered at different sizes, unlike a raster image whose existing detail is tied to its pixel data.
An SVG can also include raster content, so the extension alone does not guarantee that every part scales without visible limitations.
Test the actual asset
Open a trusted logo file in a suitable viewer and inspect it at the intended sizes. Check thin strokes and small lettering, not just whether the outer shape remains smooth.
Placing a screenshot inside an SVG wrapper does not recover the original vector shapes. Conversion requires actual reconstruction or a suitable original asset, with quality checked afterwards.
Choose for the job
A simple logo and a detailed photograph have different needs. Do not assume a vector format will make every image smaller or more appropriate.
Our guide to pixels and output size provides the raster side of the comparison. Start with the representation you have and the size you need, then verify the result in its real destination.