With the advent of HTML5, many old elements were deprecated. To ensure the best user experience, deprecated elements should not be used. This rule checks for the following deprecated elements:
| Element | Remediation Action |
|---|---|
basefont, big, blink, center, font, marquee,
multicol, nobr, spacer, tt |
use CSS |
acronym |
use abbr |
applet |
use embed or object |
bgsound |
use audio |
frame, frameset, noframes |
restructure the page to remove frames |
isindex |
use form controls |
dir |
use ul |
hgroup |
use header or div |
listing |
use pre and code |
nextid |
use GUIDS |
noembed |
use object instead of embed when fallback is necessary |
plaintext |
use the "text/plain" MIME type |
strike |
use del or s |
xmp |
use pre or code, and escape "<" and "&" characters |