Add icons from https://app.streamlinehq.com/icons/pixel

    mark a group
    select 42 px
    download as zip
    mogrify -flatten -fuzz 1% -trim +repage -sample 50% -gravity center -extent 21x21 *.png
    /data/kraus/git/u8g2/tools/font/png2bdf/png2bdf -f test -c test -o out.bdf -e 48 -i *.png

Attribution:
https://intercom.help/streamlinehq/en/articles/5354403-how-to-create-an-attribution-link


find . -type d -exec csh -c "cd `pwd`/{} && pwd && mogrify -flatten -fuzz 1% -trim +repage -sample 50% -gravity center -extent 21x21 *.png"  \;

find . -type d -exec csh -c "cd `pwd`/{} && pwd && /data/kraus/git/u8g2/tools/font/png2bdf/png2bdf -f streamline_{} -c streamlinehq.com -o streamline_{}.bdf -e 48 -i *.png"  \;

<a href="https://www.streamlinehq.com">Free Coding App Website Ui PNG icon by Streamline</a>

for i in `ls`; do pushd . && cd $i && /data/kraus/git/u8g2/tools/font/png2bdf/png2bdf -f streamline_$i -c streamlinehq.com -o streamline_$i.bdf -e 48 -i *.png && popd ; done

/data/kraus/git/u8g2/tools/font/png2bdf/png2bdf -f streamline_all -c streamlinehq.com -o streamline_all.bdf -e 48 -i *.png

the following files are removed due to conversion problems:

-rw-rw-r-- 1 kraus kraus   361 Sep 13 21:09 streamline-content-files-book-library--content-files.png
-rw-rw-r-- 1 kraus kraus   398 Sep 13 21:04 streamline-interface-essential-signin-login--interface-essential.png --> fixed
-rw-rw-r-- 1 kraus kraus   359 Sep 13 21:06 streamline-video-movies-player--video-movies.png
-rw-rw-r-- 1 kraus kraus   417 Sep 13 21:06 streamline-video-movies-square-off--video-movies.png
-rw-rw-r-- 1 kraus kraus   422 Sep 13 21:06 streamline-video-movies-vintage-tv-1--video-movies.png