GiellaLT provides rule-based language technology aimed at minority and indigenous languages
Removed irrelevant keys using Inkscape, saved remaining key cap as pdf, imported into OmniGraffle for further editing and adaptation.
Text is 120 point, vertically centered, and then lifted using text offset Y -6%.
To convert the large-resolution png with alpha to a useful iTunes art, do as follows:
$ convert images/Sami-icon3.png -background white -alpha remove -resize 1024x1024 images/Sami-icon-1024.png
To create the app store / Google play icon, do as follows:
$ convert images/Sami-icon3.png -resize 512x512 images/Sami-icon-120.png
Adjust the size parameter as needed in each case.