Vector Editing Capabilities
The foundation of any icon maker is its ability to manipulate Bézier curves. High-quality tools offer precise control over anchor points, pathfinding operations (uniting, subtracting, and intersecting shapes), and stroke alignment. Look for tools that allow for non-destructive editing so you can adjust the thickness of icon strokes globally without redrawing individual elements.
Grid and Alignment Systems
Consistency is the hallmark of professional icon sets. A robust icon maker must feature a customizable grid system, such as a 24x24 or 32x32 pixel canvas, with built-in "snap to pixel" functionality. This prevents anti-aliasing issues and ensures that the final rendered icon looks crisp on mobile and desktop displays.
Export and Batch Processing
Efficiency in a workflow is dictated by how easily you can export assets. A great tool should support multiple formats, including SVG, PNG, PDF, and ICO. Furthermore, the ability to batch export icons in various sizes and resolutions—automatically applying naming conventions—is a massive time-saver for developers and designers working on large-scale UI projects.
Library and Asset Management
If you are working with hundreds of icons, managing them becomes a task in itself. Tools like IconJar act as a repository, allowing you to organize, tag, and search through your icons across different projects. This prevents duplicate work and keeps your design system organized.