creating gallery with preview
montage -mode concatenate -tile 5x $(find /path/to/images/ | sort | tail -n +2 | head -n 9) -resize 200x200 -quality 59 gallery.webp
cat gallery.webp | base64 -w 0 > gallery.webp.base64
https://npub10yjtwupadl7hvgkun2xju8yp3dhgwy5cskw6wunhdduzwxhhklnq3g0zkr.hostr.cc/d/gallery.html?x