Short answer
Start from a high-resolution square source, keep important detail away from the edges, and export each required size from the same master.
App Icon Size Preparation Guide
Start from a high-resolution square source, keep important detail away from the edges, and export each required size from the same master.
Why it matters
- Use a square high-resolution master
- Leave safe padding around the symbol
- Review tiny sizes before release
What to know
Icon problems usually come from inconsistent padding, low-resolution sources, or details that disappear at small sizes.
A single master file helps keep platform exports visually consistent.
Testing the icon at small sizes is more useful than only reviewing a large preview.