| Supported HTML 4.0 | Unsupported HTML 4.0 | Invalid HTML 4.0 |
Attributes in red are not supported in
HTML 4.0
| Name | Attributes | Description |
| A | HREF=url TARGET=framename NAME=name ID=name |
anchor |
| ABBR | abbreviated form | |
| ACRONYM | acronym | |
| ADDRESS | ID=name | information on author |
| APPLET | Java applet | |
| AREA | SHAPE=RECT|POLY|POLYGON|CIRC| CIRCLE|DEFAULT HREF=url NOHREF TARGET=framename COORDS=x,y,r|x1,y1, x2,y2|x1,y1,x2,y2,... ID=name |
client-side image map area |
| B | ID=name | bold text style |
| BASE | HREF=url TARGET=framename ID=name |
document base URI |
| BASEFONT | SIZE=1|2|3|4|5|6|7 ID=name |
base font size |
| BDO | I18N BiDi over-ride | |
| BGSOUND | SRC=url LOOP=INFINITE|number DELAY=seconds ID=name |
background sound |
| BIG | ID=name | large text style |
| BLINK | ID=name | blink text style |
| BLOCKQUOTE | ID=name | long quotation |
| BODY | BACKGROUND=url BGCOLOR=colour|colourname TEXT=colour|colourname LINK=colour|colourname LEFTMARGIN=pixel TOPMARGIN=pixel ID=name |
document body |
| BR | CLEAR=ALL|LEFT|RIGHT ID=name |
forced line break |
| BQ | ID=name | long quotation |
| BUTTON | push button | |
| CAPTION | ALIGN=TOP|BOTTOM|LEFT|RIGHT|CENTER VALIGN=TOP|BOTTOM ID=name |
table caption |
| CENTER | ID=name | shorthand for DIV |
| CITE | ID=name | citation |
| CODE | ID=name | computer code fragment |
| COL | table column | |
| COLGROUP | table column group | |
| DD | ID=name | definition description |
| DEL | deleted text | |
| DFN | ID=name | instance definition |
| DIR | ID=name | directory list |
| DIV | ALIGN=LEFT|RIGHT|CENTER ID=name |
generic language/style container |
| DL | ID=name | definition list |
| DT | ID=name | definition term |
| EM | ID=name | emphasis |
| EMBED | SRC=url WIDTH=pixel[%] HEIGHT=pixel[%] ALIGN=LEFT|RIGHT|ABSBOTTOM|ABSMIDDLE| ABSTOP|BASELINE|TEXTTOP|TOP|BOTTOM| MIDDLE BORDER[=pixel] VSPACE=pixel HSPACE=pixel LOOP=TRUE|FALSE ID=name |
generic embedded object |
| FIELDSET | form control group | |
| FN | ID=name | footnote |
| FONT | SIZE=[+|-]1|2|3|4|5|6|7 COLOR=colour|colourname ID=name |
local change to font |
| FORM | METHOD=GET|POST ACTION=url ID=name |
interactive form |
| FRAME | NAME=name SRC=url NORESIZE SCROLLING=AUTO|YES|NO MARGINWIDTH=pixel MARGINHEIGHT=pixel ID=name |
subwindow |
| FRAMESET | ROWS=[number]*|pixel[%],... COLS=[number]*|pixel[%],... ID=name |
window subdivision |
| H1 | ALIGN=LEFT|RIGHT|CENTER ID=name |
heading |
| H2 | ALIGN=LEFT|RIGHT|CENTER ID=name |
heading |
| H3 | ALIGN=LEFT|RIGHT|CENTER ID=name |
heading |
| H4 | ALIGN=LEFT|RIGHT|CENTER ID=name |
heading |
| H5 | ALIGN=LEFT|RIGHT|CENTER ID=name |
heading |
| H6 | ALIGN=LEFT|RIGHT|CENTER ID=name |
heading |
| HEAD | document head | |
| HR | ALIGN=LEFT|RIGHT|CENTER SIZE=pixel COLOR=colour|colourname WIDTH=pixel[%] NOSHADE ID=name |
horizontal rule |
| HTML | document root element | |
| I | ID=name | italic text style |
| IFRAME | inline subwindow | |
| IMG | SRC=url WIDTH=pixel[%] HEIGHT=pixel[%] ALIGN=LEFT|RIGHT|ABSBOTTOM|ABSMIDDLE| ABSTOP|BASELINE|TEXTTOP|TOP| BOTTOM|MIDDLE ALT=text ISMAP USEMAP=#name BORDER[=pixel] VSPACE=pixel HSPACE=pixel ID=name |
embedded image |
| IMAGE | (same as IMG) | embedded image |
| INPUT | TYPE=CHECKBOX|HIDDEN|IMAGE|PASSWORD| RADIO|RESET|SUBMIT|TEXT SRC=url NAME=name MAXLENGTH=number VALUE=text CHECKED SIZE=number ID=name |
form control |
| INS | inserted text | |
| ISINDEX | HREF=url PROMPT=text ID=name |
single line prompt |
| KBD | ID=name | text to be entered by the user |
| LABEL | form field label text | |
| LANG | ID=name | language context |
| LEGEND | fieldset legend | |
| LI | VALUE=number TYPE=1|A|a|I|i TYPE=DISC|CIRCLE|SQUARE ID=name |
list item |
| LINK | HREF=url REV=MADE REL=BEGIN|FIRST|UP|TOP|INDEX|TOC| GLOSSARY|COPYRIGHT|NEXT| PREVIOUS|HELP|SEARCH|AUTHOR| END|LAST|BOOKMARK|HOME |
a media-independent link |
| LISTING | ID=name | preformatted text |
| MAP | NAME=name ID=name |
client-side image map |
| MENU | ID=name | menu list |
| META | HTTP-EQUIV=REFRESH CONTENT="seconds; URL=url" ID=name |
generic metainformation |
| MULTICOL | COLS=number GUTTER=pixel WIDTH=pixel[%] ID=name |
multiple text columns |
| NOBR | ID=name | non-breaking text |
| NOFRAMES |
ID=name | alternate content container for non frame-based rendering |
| NOSCRIPT | alternate content container for non script-based rendering | |
| OBJECT | generic embedded object | |
| OL | START=number TYPE=1|A|a|I|i ID=name |
ordered list |
| OPTGROUP | option group | |
| OPTION | SELECTED VALUE=text ID=name |
selectable choice |
| P | ALIGN=LEFT|RIGHT|CENTER ID=name |
paragraph |
| PARAM | named property value | |
| PLAINTEXT | ID=name | preformatted text |
| PRE | ID=name | preformatted text |
| Q | ID=name | short inline quotation |
| S | ID=name | strike-through text style |
| SAMP | ID=name | sample program output, scripts, etc. |
| SCRIPT | script statements | |
| SELECT | NAME=name VALUE=text SIZE=number MULTIPLE ID=name |
option selector |
| SMALL | ID=name | small text style |
| SOUND | SRC=url LOOP=INFINITE|number DELAY=seconds ID=name |
background sound |
| SPACER | TYPE=HORIZONTAL|VERTICAL|BLOCK SIZE=pixel ALIGN=LEFT|RIGHT|ABSBOTTOM|ABSMIDDLE| ABSTOP|BASELINE|TEXTTOP|TOP|BOTTOM| MIDDLE WIDTH=pixel[%] HEIGHT=pixel[%] ID=name |
horizontal and vertical spacing |
| SPAN | generic language/style container | |
| STRIKE | ID=name | strike-through text |
| STRONG | ID=name | strong emphasis |
| STYLE | style info | |
| SUB | ID=name | subscript |
| SUP | ID=name | superscript |
| TABLE | ALIGN=LEFT|RIGHT|CENTER HSPACE=pixel VSPACE=pixel BORDER[=pixel] BGCOLOR=colour|colourname BORDERCOLOR=colour|colourname BORDERCOLORDARK=colour|colourname BORDERCOLORLIGHT=colour|colourname CELLSPACING=pixel CELLPADDING=pixel WIDTH=pixel[%] HEIGHT=pixel[%] ID=name |
|
| TBODY | table body | |
| TD | ALIGN=LEFT|RIGHT|CENTER|DECIMAL VALIGN=TOP|MIDDLE|BOTTOM BGCOLOR=colour|colourname WIDTH=pixel[%] HEIGHT=pixel[%] COLSPAN=number ROWSPAN=number NOWRAP ID=name |
table data cell |
| TEXTAREA | NAME=name COLS=number ROWS=number SIZE=number ID=name |
multi-line text field |
| TFOOT | table footer | |
| TH | ALIGN=LEFT|RIGHT|CENTER|DECIMAL VALIGN=TOP|MIDDLE|BOTTOM BGCOLOR=colour|colourname WIDTH=pixel[%] HEIGHT=pixel[%] COLSPAN=number ROWSPAN=number NOWRAP ID=name |
table header cell |
| THEAD | table header | |
| TITLE | document title | |
| TR | ALIGN=LEFT|RIGHT|CENTER|DECIMAL VALIGN=TOP|MIDDLE|BOTTOM BGCOLOR=colour|colourname ID=name |
table row |
| TT | ID=name | teletype or monospaced text style |
| U | ID=name | underlined text style |
| UL | TYPE=1|A|a|I|i ID=name |
unordered list |
| VAR | ID=name | instance of a variable or program argument |
| WBR | ID=name | word break |
| XMP | ID=name | sequence of literal characters |