From png to txt and then to tmx

[namespace]

Hi, I wanted to know if it's possible to go from png to txt and then to tmx. I want to convert a png image to a tilemap.
In my case I want to store on the txt file only the data of the rgb part of the png ignoring the alpha/transparent part.
Do you think it's possible?
Or is it possible to go directly from png to tmx?

[snibgo]

TMX is not a format listed in "magick -list format".

[namespace]

So is it possible to do a conversion from png to txt separating the colored part from the alpha channel?

[snibgo]

The colour RGB channels with no alpha:

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magick toes_holed.png -alpha off txt:

Just the alpha:

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magick toes_holed.png -alpha extract txt: