No Lock Sign black outline icon
Outline padlock inside a circle with a diagonal slash through it
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About the No Lock Sign black outline icon
A closed padlock with a rounded shackle and a square body sits inside a large circle that is cut by a single diagonal bar, the standard prohibition mark.
The pairing reads as no lock, unsecured connection or protection disabled. Use it in browser and network security warnings, permission screens, IoT device status lists, workplace safety signage and infographics contrasting secure and insecure setups.
This is the black outline version of the no lock sign 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.
