| Name | HTML 4.01 Transitional | HTML 4.01 Strict | HTML 4.01 Frameset | XHTML 1.0 Transitional | XHTML 1.0 Strict | XHTML 1.0 Frameset | XHTML 1.1 | XHTML basic 1.0 | ISO/IEC 15445:2000 |
|---|---|---|---|---|---|---|---|---|---|
| a | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| abbr | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| acronym | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| address | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| applet | △ | - | △ | △ | - | △ | - | - | - |
| area | ○ | ○ | ○ | ○ | ○ | ○ | ○ | - | ○ |
| b | ○ | ○ | ○ | ○ | ○ | ○ | ○ | - | ○ |
| base | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | - |
| basefont | △ | - | △ | △ | - | △ | - | - | - |
| bdo | ○ | ○ | ○ | ○ | ○ | ○ | ○ | - | ○ |
| big | ○ | ○ | ○ | ○ | ○ | ○ | ○ | - | - |
| blockquote | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| body | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| br | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| button | ○ | ○ | ○ | ○ | ○ | ○ | ○ | - | ○ |
| caption | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| center | △ | - | △ | △ | - | △ | - | - | - |
| cite | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| code | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| col | ○ | ○ | ○ | ○ | ○ | ○ | ○ | - | ○ |
| colgroup | ○ | ○ | ○ | ○ | ○ | ○ | ○ | - | ○ |
| dd | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| del | ○ | ○ | ○ | ○ | ○ | ○ | ○ | - | ○ |
| dfn | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| dir | △ | - | △ | △ | - | △ | - | - | - |
| div | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| dl | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| dt | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| em | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| fieldset | ○ | ○ | ○ | ○ | ○ | ○ | ○ | - | ○ |
| font | △ | - | △ | △ | - | △ | - | - | - |
| form | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| frame | - | - | ○ | - | - | ○ | - | - | - |
| frameset | - | - | ○ | - | - | ○ | - | - | - |
| h1 | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| h2 | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| h3 | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| h4 | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| h5 | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| h6 | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| head | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| hr | ○ | ○ | ○ | ○ | ○ | ○ | ○ | - | ○ |
| html | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| i | ○ | ○ | ○ | ○ | ○ | ○ | ○ | - | ○ |
| iframe | ○ | - | ○ | ○ | - | ○ | - | - | - |
| img | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| input | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| ins | ○ | ○ | ○ | ○ | ○ | ○ | ○ | - | ○ |
| isindex | △ | - | △ | △ | - | △ | - | - | - |
| kbd | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| label | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| legend | ○ | ○ | ○ | ○ | ○ | ○ | ○ | - | ○ |
| li | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| link | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| map | ○ | ○ | ○ | ○ | ○ | ○ | ○ | - | ○ |
| menu | △ | - | △ | △ | - | △ | - | - | - |
| meta | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| noframes | ○ | - | ○ | ○ | - | ○ | - | - | - |
| noscript | ○ | ○ | ○ | ○ | ○ | ○ | ○ | - | - |
| object | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| ol | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| optgroup | ○ | ○ | ○ | ○ | ○ | ○ | ○ | - | ○ |
| option | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| p | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| param | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| pre | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| q | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| rb | - | - | - | - | - | - | ○ | - | - |
| rbc | - | - | - | - | - | - | ○ | - | - |
| rp | - | - | - | - | - | - | ○ | - | - |
| rt | - | - | - | - | - | - | ○ | - | - |
| rtc | - | - | - | - | - | - | ○ | - | - |
| ruby | - | - | - | - | - | - | ○ | - | - |
| s | △ | - | △ | △ | - | △ | - | - | - |
| samp | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| script | ○ | ○ | ○ | ○ | ○ | ○ | ○ | - | - |
| select | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| small | ○ | ○ | ○ | ○ | ○ | ○ | ○ | - | - |
| span | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| strike | △ | - | △ | △ | - | △ | - | - | - |
| strong | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| style | ○ | ○ | ○ | ○ | ○ | ○ | ○ | - | ○ |
| sub | ○ | ○ | ○ | ○ | ○ | ○ | ○ | - | ○ |
| sup | ○ | ○ | ○ | ○ | ○ | ○ | ○ | - | ○ |
| table | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| tbody | ○ | ○ | ○ | ○ | ○ | ○ | ○ | - | ○ |
| td | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| textarea | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| tfoot | ○ | ○ | ○ | ○ | ○ | ○ | ○ | - | ○ |
| th | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| thead | ○ | ○ | ○ | ○ | ○ | ○ | ○ | - | ○ |
| title | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| tr | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| tt | ○ | ○ | ○ | ○ | ○ | ○ | ○ | - | ○ |
| u | △ | - | △ | △ | - | △ | - | - | - |
| ul | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| var | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |