Deprecated tags are parts of the HTML standard code whose use is no more recommended. Well this is because HTML standards are updated from time to time (e.g., from version 3.0 to 4.0 or from 4.0 to 5.0) and some tags or characteristics of the language are added and others are removed or deprecated.

This will provide HTML authors more tools when a new element or attribute is added, and they are also recommended to discard those than have been replaced or became useless. The decision whether to use or not deprecated tags and/or attributes is left to each author consideration. Still browsers give support to deprecated elements, but in a future this may change. The general recommendation is to try other ways to achieve their effects.

Some of the deprecated tags that are no more recommended are

1. <center>
2. <u>
3. <font>
4. <basefont>
5. <strike>
6. <menu>
7. <dir>
8. <applet>