Provide a normal-size logo plus a retina version at double the dimensions; prefer SVG when the logo suits vector format to avoid resolution and sizing issues.
Forget Megapixels, This Tiny Camera Turns Your World Into A 16-Bit Pixelated Video Game - Yanko Design
Pixless intentionally limits resolution to 0.03 megapixels, producing chunky 16‑bit blocky images as an aesthetic rejection of the megapixel arms race.