If the PNG `pHYs` chunk is present, the APNG images and their `x_offset` and `y_offset` values must be scaled in the same way as the main image. Conceptually, such scaling occurs while mapping the output buffer onto the canvas.
= MIME type =
APNG can be identified using the <code>image/apng</code> MIME type.
= Revisions to this Specification =