Allowing unsafe HTML in articles

By default, 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.

Warning: Making this change will allow potentially malicious code to be executed when users open an article in a browser.

To allow unsafe HTML in HTTP responses

1. In Guide, click the Settings icon () in the sidebar.
2. Under Security, select the Display Unsafe Content option.
3. Click Update.

Safe tags

strong, em, b, i, p, code, pre, tt, samp, kbd, var, sub, sup, dfn, cite,
big, small, address, hr, br, id, div, span, h1, h2, h3, h4, h5, h6,
ul, ol, li, dl, dt, dd, abbr, acronym, a, img, blockquote,
del, ins, u, table, thead, tbody, tfoot, tr, th, td, colgroup

Note: Even if Help Center doesn't strip safe tags, the third-party HTML article editor used in Help Center (TinyMCE) may strip some safe tags from the HTML. For example, the editor removes <i> tags with no content, such as those used for Font Awesome icons.

Safe attributes

href, src, width, height, alt, cite, datetime, title, class, name,
xml:lang, abbr, target, border

Everything else is considered unsafe.