Customizing MathJax

Anki's bundled MathJax support is loaded before your card content, so if you wish to customize MathJax, you will need to do so in a specific way.

For recent Anki versions, use something like this:

MathJax.config.tex['macros'] = {
    R: '{\\mathbb {R}}',
if (typeof is_already_run == 'undefined') {
  is_already_run = true

For older Anki versions:



  • Please avoid changing the standard open/close tags (\( and \[), to something like $ and $$, as Anki has special logic for cloze deletions, which will not work if you change the delimiter.