Sources & Verification 6 of 8
Claims Verified
The guide's core format claims have been checked against the W3C PNG Specification, Third Edition. Production guidance is intentionally conditional because no single PNG setting is correct for every method, product, machine, material, or viewing condition.
| Verified claim area | Result | Boundary |
|---|---|---|
| Raster and lossless format | Verified | Lossless compression preserves encoded samples but does not make raster artwork resolution-independent |
| Color types and bit depths | Verified | Application support may be narrower than the specification |
| Alpha transparency | Verified | Production software, underbase generation, compositing, and output method can alter the practical result |
| RGB rather than standard CMYK image types | Verified | A downstream workflow may convert color for a particular output device |
| Optional color and physical-pixel metadata | Verified | Metadata can be absent, ignored, replaced, or interpreted differently by applications |
| Static PNG and APNG distinction | Verified | Production output normally uses a static image or static frame |
| Effective resolution depends on pixels and output size | Verified by calculation | The acceptable threshold remains product and method specific |
| PNG does not contain universal cut paths, stitches, toolpaths, or 3D geometry | Verified by format scope | PNG may still serve as reference artwork, a mask, a texture, or an input to a separate conversion workflow |
| Production compatibility is conditional | Verified as a workflow rule | Final acceptance belongs to the selected maker's validated product, equipment, material, and process |