> See e.g. [1] why this matters. Quote the relevant section, Slack requires a log-in. > Additionally the PNG spec does not specify if the alpha is linear. Se

> See e.g. [1] why this matters. Quote the relevant section, Slack requires a log-in. > Additionally the PNG spec does not specify if the alpha is linear. Section 12.1 of the PNG spec seems to specify exactly that: “gamma does not apply to alpha samples; alpha is always represented linearly.”