Icons

Manifest icons are fetched. Unreachable or non-image files are dropped.

Purpose tokens come from the space-separated purpose member. If purpose is omitted, it is treated as any (the specification default).

Icons are grouped into:

• any
• maskable
• monochrome

An icon with purpose: "any maskable" appears in both lists.

Primary icon

Selected from the any list when it is non-empty, otherwise from all valid icons.

Ranking, in order:

1. MIME type: PNG, then SVG, then WebP, then other.
2. Square preferred over non-square.
3. Size closest to 512px (measured shortest side, else declared sizes). SVG is treated as 512 for this comparison.
4. Larger size as a tie-break.

Consumers that need an adaptive launcher icon should prefer icons.maskable[0] and fall back to icons.primary.