By default, your help center quarantines unsafe HTML tags and attributes in articles to reduce the risk of somebody introducing malicious code (see the list of safe tags and attributes below).
The unsafe HTML is not stripped from the articles on the server. Rather, it's not included in the HTTP responses sent to browsers. As a result, articles might not render as intended in browsers. You can override the default setting to allow all the article HTML to be sent to a browser.
To allow unsafe HTML in HTTP responses
- In Guide, on the sidebar, click the Settings icon ().
- Under Security, click Display Unsafe Content.
- Click Update.
strong, em, b, i, p, code, pre, samp, kbd, var, sub, sup, dfn, cite, small, address, hr, br, id, div, span, h1, h2, h3, h4, h5, h6, ul, ol, li, dl, dt, dd, abbr, a, img, blockquote, del, ins, table, thead, tbody, tfoot, tr, th, td, colgroup
<i>tags with no content, such as those used for Font Awesome icons.
href, src, width, height, alt, cite, datetime, title, class, name, xml:lang, abbr, target, border
Everything else is considered unsafe.