ExpressionEngine 3 and 4 compatible. Appends the last modified time (unix timestamp) to the specified file:
<link href="{exp:rd_cache_breaker file='/path/to/file' separator='?'}" rel="stylesheet" />This plugin will determine the time that the file was last modified and append that unix timestamp to the file path using the separator, like so:
<link href="/path/to/file?1234567890" rel="stylesheet" />