Lock black filled icon
Closed padlock with arched shackle and a keyhole in its rounded square body
About the Lock black filled icon
A padlock drawn straight on: a tall arched shackle rises from a rounded square body that carries a classic keyhole with a circular top and a tapered slot below. The closed shackle makes it read clearly as locked rather than open, so it works for login and password fields, HTTPS and privacy badges, protected content labels, account settings menus and security feature slides.
Proportions are generous - the body takes roughly half the height and the shackle arch matches its width - giving a stable, symmetrical silhouette. Pair it with unlock, key, shield and fingerprint icons from the same family. The keyhole is the first detail to blur, so keep the icon at 24 px or larger.
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.
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.
