Lock Icon Generator

What the lock icon means

Secured, private or requiring authentication. The browser address bar made this the universal symbol for HTTPS.

Security icons have to signal state as much as function, and the state distinction is often only a few pixels: locked versus unlocked, visible versus hidden, protected versus not. At icon sizes those pairs become indistinguishable, so never rely on the shape alone to communicate a security state — colour, position and text all need to agree. As a brand mark, the padlock and shield are extremely legible silhouettes and among the best-performing shapes in this whole set at 16 pixels.

Where you will actually see it

• login and password fields
• private and restricted content
• app icons for password managers and VPNs

Drawing the lock at 16 pixels

The shackle arc above the body must stay clearly separated from it. If they merge the icon reads as a bag.

Stroke weight is the control that matters most here. Lucide icons are drawn on a 24 × 24 grid with a 2px stroke, which means that when the icon is scaled down to 16px the stroke is effectively 1.33px — below one device pixel on a standard-density display. Raising the stroke to 2.5 or 3 before exporting keeps the shape solid; lowering it to 1.5 suits large app icons where a heavy stroke looks clumsy. The editor exposes this as a slider, so you can find the value that survives your smallest target size rather than guessing.

Using it in code

If you want the icon in a Vue project rather than as a downloaded asset, it is a named export of the lucide package:

import { Lock } from 'lucide-vue-next'

<Lock :size="24" :stroke-width="2" />

The download button above gives you something different: the icon composed onto a background with a corner radius, exported as a flat SVG path set. The exporter converts the icon out of its <foreignObject> wrapper first, because a foreign object taints an HTML canvas and would otherwise break PNG and ICO rasterisation.

Related icons

Other icons in the security group.