Blocked black outline icon
Circle crossed by a diagonal line, an empty prohibition sign
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About the Blocked black outline icon
A plain circle is crossed by a single diagonal line running edge to edge, the universal prohibition mark left deliberately empty so any subject can sit behind it. It signals blocked access, banned actions and disabled states, which fits permission errors, moderation tools, admin panels, form validation messages and policy or safety signage.
Equal stroke weight on the ring and the slash keeps the mark neutral, and the line meets the circle cleanly at both ends so it still reads correctly when overlaid on another glyph. It layers well over camera, phone or user icons. Keep it at 16 px or larger.
This is the black outline version of the blocked icon: even, monoline strokes that stay crisp at small sizes and suit clean, minimal interfaces, wireframes and light backgrounds.
It downloads free as an SVG vector or transparent PNG in seven sizes, and the free online editor lets you recolor it, apply gold, silver, neon and gradient styles, add animation, or convert it to EPS, PDF and DXF.
Free for personal and commercial use with attribution.
