Symbols
Our site supports a predetermined list of frequently used symbols. If you would like to use a symbol not on our lists, you can add it to the page as an image file with the include image feature, or encode it directly with html using UTF-8.
imagej.io currently supports the following symbols as includes:
This text: {% include yes %}
produces a green check:

This text: {% include no %}
produces a red X:

This text: {% include arrow %}
produces an greater than symbol: “ › “