Lock black filled icon
Closed padlock with a round keyhole, drawn inside a circle outline
About the Lock black filled icon
A closed padlock sits inside a thin circular badge: a rounded shackle arches above a squared body whose lower edge curves, and a classic keyhole — a small circle over a tapering slot — is centered on the face. It signals protection, restricted access and confidentiality. Use it on login and password fields, privacy settings pages, HTTPS and encryption notices, locked content in apps, and security service presentations.
The shackle, body and keyhole share consistent stroke weight, and the enclosing ring makes the mark work as a round button or avatar-sized badge. It pairs naturally with unlock, key, shield and fingerprint icons in the library. Keep it at 24 px or above so the keyhole slot does not fill in.
This is the solid black filled version of the lock icon: a bold silhouette that reads clearly at 16-24 px and on dark or busy backgrounds, and prints well in one colour.
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.
