Chrome Extension Toolbar & Management Icons

The smaller icon sizes used in the browser toolbar, extensions page, and Windows taskbar.

Required Sizes

16 × 16Required

Displayed in the browser toolbar next to the address bar. Must be legible at this tiny size — use simple, bold shapes.

32 × 32Optional

Used on Windows for the favicon and taskbar icon. Optional but recommended for cross-platform polish.

48 × 48Required

Shown on the chrome://extensions management page. This is the most commonly viewed icon after the toolbar.

Format	PNG only
Transparency	Supported and recommended
Color space	sRGB
Defined in	manifest.json under "icons" and "action.default_icon"

Start by designing the 48×48 version, then simplify for 32×32 and 16×16.
At 16×16, only the most essential shape should remain — drop shadows, gradients, and fine lines won't render.
Use pixel-aligned edges to avoid blurriness at small sizes.
Test your 16×16 icon against Chrome's default toolbar background (both light and dark themes).
Keep the same visual identity across all sizes, even if you simplify details.
Avoid anti-aliased curves at 16×16 — they appear fuzzy. Prefer straight edges or 45-degree angles.

Using the same image for all three sizes without optimizing each — a downscaled 48×48 looks terrible at 16×16.
Including text or letters that become unreadable at small sizes.
Forgetting to declare icons in manifest.json — Chrome will show a generic puzzle piece.
Not providing the 32×32 size, leading to blurry scaling on Windows.

Generate all toolbar icon sizes from a single design with CWS Kit.