There are online tools like duri.me that allow to create a Data URI from an image file. Are there any tools that run locally on Linux to do the same?


Data URIs are usually just base64-encoded with the MIME-type stuck at the front. I use this homegrown script, which takes the filename as its first and only parameter and returns the data uri, already wrapped in url('data:'):

[0 1026 8:29:38] ~ % cat $(which cssify.sh)
mimetype=$(file -bN --mime-type "$1")
content=$(base64 -w0 < "$1")
echo "url('data:$mimetype;base64,$content')"
  • I needed to replace -w0 with -b0 – thanksd Dec 12 '18 at 23:30

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