Rich text field html whitelist

In our application we use QuickBase APIs to pull in the data from rich text fields and insert them into a database.  However, we would like to limit the html tags that the user can use to make storage into the database easier.  For example, is there any way to whitelist out images so that the user cannot select and try to enter images.  We can add a text note on the form "Do not add images" and then filter it out in the PHP code that we use for the APIs and DB writes.  However, its much cleaner to simply have some way of whitelisting out the images tab (either remove it from the options or gray it out).

Thank you