Gray levels in grayscale PNG render completely opaque

[micheldebree]

Hi,

I am trying to get the 'Image Grayscale Magic' to work, but instead of "All the mid-gray areas will inherit opacity according to their depth of color (0 - 255)", all mid-gray areas render completely opaque, making blurs, anti-aliasing not possible.

I have used ImageMagick to create the grayscale PNG:

convert original.png -colorspace gray final.png

The resulting PNG gives me this info:

0.png: PNG image data, 58 x 86, 8-bit gray+alpha, non-interlaced

The resulting image looks good when I view it on my computer (different levels of transparency), but has only two levels (opaque/transparent) on the fitbit simulator and on the Versa watch itself.

Anyone know of an example where this does work? What am I doing wrong?

[LekoFraggle]

Hello,

This is a really old post, but I was able to get to work fine.  Let me know if you are still having an issue, and I can help.  I am pretty certain alpha is not supported (the magick algorithm adds it (more black equals transparent).