Oxygen O2 Bubbles black outline icon
Bold O2 formula with three round oxygen bubbles floating above it
About the Oxygen O2 Bubbles black outline icon
The formula O2 is drawn in heavy letterforms, with a thick ring for the O and a numeral two beside it, while three round bubbles of different sizes float above, one carrying a small highlight. It reads as oxygen, breathable air and gas concentration. Suited to hospital and oxygen therapy pages, air purifier product specs, diving and aquarium apps, chemistry lessons, and air quality dashboards.
Bold circular counters in both the letter and the bubbles unify the composition, and the diagonal rise of the bubbles adds lift. It pairs with CO2, nitrogen and molecule icons in the same set. The small mid-size bubble disappears first when scaled, so aim for 32 px minimum.
This is the black outline version of the oxygen o2 bubbles icon: even, monoline strokes that stay crisp at small sizes and suit clean, minimal interfaces, wireframes and light backgrounds.
Download it free as a scalable SVG vector or transparent-background PNG in seven sizes (16 to 512px), copy the SVG code straight into your project, or open it in the free online editor to change colors, apply gold, silver, neon and gradient styles, animate it, or convert it to EPS, PDF and DXF.
Free for personal and commercial use with attribution.
