The bare glyph, recentred on its true circular centre so an avatar crop lands it in the middle. This is the site favicon.
Thin Ring
π inside a fine ring. The most elegant at large sizes, where the hairline can breathe.
Bold Ring
π inside a heavier ring that stays legible all the way down to a browser-tab favicon.
Solid Disc
π knocked out of a filled disc. The strongest presence when the mark is tiny.
The SVG adapts to light and dark automatically; the PNGs are fixed. The rings
and disc share the corrected circular centring, so they sit true inside any circular crop. The
Mark is also the site favicon.
