What are some potential pitfalls of using online HTML editors for managing websites?

One potential pitfall of using online HTML editors for managing websites is the security risk of exposing sensitive information or allowing malicious code to be injected into the website. To mitigate this risk, it is important to regularly review and sanitize the code generated by the online editor to remove any potential vulnerabilities.

// Example PHP code snippet to sanitize HTML code before saving to database
$sanitized_html = filter_var($html_input, FILTER_SANITIZE_STRING);