What goes into an icon set brief?

A useful brief defines the visual style (line, filled, or duotone), the stroke weight, the grid or canvas size, and the specific subjects to draw. Fixing these up front keeps a set visually consistent.

Why does stroke weight matter?

Inconsistent stroke weight is the fastest way for an icon set to look amateurish. Defining a single weight, such as 2 pixels on a 24-pixel grid, ensures every icon reads as part of the same family.

What is a duotone icon style?

Duotone icons use two tones of a color, typically a solid fill plus a lighter accent shape, to add depth without full color. They sit between flat line icons and full-color illustrations.

How many icons should a starter set have?

This tool suggests 20 subjects, which covers the common needs of most apps. You can trim the list or extend it, but keeping the first release focused helps you ship a consistent set faster.

Icon Set Concept Generator

What this tool does

Custom icon sets fail when they are commissioned piecemeal without a shared specification. This generator produces a complete icon set brief: a theme, a visual style, a stroke weight, a grid size, and a list of 20 concrete icon subjects relevant to that theme. The result is a brief you can hand to an illustrator or use as your own production checklist.

How it works

The generator pairs a chosen theme with a randomized but sensible specification. The visual style is drawn from line, filled, or duotone; the stroke weight and grid size are chosen as a matched pair (for example a 2-pixel stroke on a 24-pixel grid) so the values are always production-realistic. The 20 subjects are sampled without repetition from a theme-specific vocabulary, so a finance set suggests “invoice”, “wallet”, and “exchange rate” rather than generic shapes. All of this happens locally in your browser.

Tips and examples

Decide the grid size first; it constrains every other choice. A 24-pixel grid is the most common UI standard.
For a line style, keep the stroke weight identical across every icon, including inner details, or the set loses cohesion.
Draw the most complex subject first. If your style survives a busy icon like “settings” or “analytics”, the simple ones will be easy.
Export at multiple sizes and check legibility at 16 pixels; many designs that look great large collapse when small.