Element Index

This page lists every HTML element type recognized by wgpu-html. Each element is parsed into a typed Rust struct with per-element attribute parsing. Unknown tags are silently dropped.

Total: 98 element types (plus Text for text nodes). <script> and <noscript> are parsed but entirely ignored at runtime.

Document Structure

Element	Description	Category	Notes
html	Root element	Document	Stores xmlns attribute
head	Document metadata container	Document	display: none in UA
body	Document body	Document	Default margin: 8px in UA
title	Document title	Document	Raw-text element; content captured
link	External resource link	Document	<link rel="stylesheet"> parsed but not auto-fetched — host must call tree.register_linked_stylesheet()
meta	Document metadata	Document	name, content, charset, http-equiv parsed
style	Embedded CSS stylesheet	Document	Raw-text element; CSS parsed by stylesheet parser

Sections & Structure

Element	Description	Category	Notes
h1–h6	Headings (1–6)	Section	UA defaults: h1=2em bold, h2=1.5em bold, h3=1.17em bold, h4=1em bold, h5=0.83em bold, h6=0.67em bold; all have margin-block: 0.67em
header	Introductory content	Section	Block element
footer	Footer content	Section	Block element
nav	Navigation section	Section	Block element
main	Main content area	Section	Block element
section	Generic document section	Section	Block element
article	Self-contained composition	Section	Block element
aside	Tangential content	Section	Block element
div	Generic container	Section	Block element
span	Generic inline container	Section	Inline element

Text & Block Content

Element	Description	Category	Notes
p	Paragraph	Block text	Auto-close on next p, div, heading, etc.
br	Line break	Inline	Void element
hr	Thematic break / horizontal rule	Block text	Void element; painted as a line
pre	Preformatted text	Block text	Preserves whitespace
blockquote	Block quotation	Block text	UA margin: 1em 40px
address	Contact information	Block text	Usually italic

Lists

Element	Description	Category	Notes
ul	Unordered list	List	Block; UA margin: 1em 0, padding-left: 40px
ol	Ordered list	List	Block; same UA margins as ul
li	List item	List	Auto-close on next li
dl	Description list	List	Block
dt	Description term	List	Auto-close on next dt/dd
dd	Description details	List	Auto-close on next dt/dd

Tables

Element	Description	Category	Notes
table	Table root	Table	Parsed; falls through to block layout (no table layout yet)
caption	Table caption	Table
colgroup	Column group	Table
col	Column definition	Table	Void element
thead	Table header group	Table	Auto-close on tbody/tfoot
tbody	Table body group	Table	Auto-close on thead/tfoot
tfoot	Table footer group	Table	Auto-close on tbody
tr	Table row	Table	Auto-close on next tr
th	Table header cell	Table	Auto-close on next th/td
td	Table data cell	Table	Auto-close on next th/td

Forms

Element	Description	Category	Notes
form	Form container	Form	name, action, method, target attributes; no submission yet
input	Form input (22 types)	Form	Void element; type, value, placeholder, name, checked, disabled, readonly, required, min, max, step, pattern, multiple, autofocus parsed. Types: text, password, email, url, tel, search, number, range, date, time, datetime-local, month, week, color, checkbox, radio, file, hidden, image, submit, reset, button
textarea	Multi-line text input	Form	Raw-text element; full text editing with caret
select	Dropdown select	Form	name, disabled, required, multiple, autofocus; no dropdown UI yet
option	Select option	Form	value, selected, disabled
optgroup	Option group	Form	disabled
label	Label for form control	Form	for attribute
button	Button	Form	type (button/submit/reset), value, name, disabled, autofocus; focusable
fieldset	Form control group	Form	name, disabled
legend	Fieldset caption	Form
datalist	Predefined input options	Form
output	Calculation output	Form	name, for
progress	Progress bar	Form	value parsed as f32
meter	Scalar measurement	Form	value parsed as f32

Media

Element	Description	Category	Notes
img	Image	Media	src, alt, width, height; async loading with HTTP(S)/file/data-URI; GIF/WebP animation; two-level cache with TTL
svg	Inline SVG	Media	Rasterized via resvg to a GPU texture
source	Media source	Media	Void element; src, type
picture	Responsive image container	Media
figure	Figure with caption	Media
figcaption	Figure caption	Media
area	Image map area	Media
map	Image map	Media
canvas	Bitmap canvas	Media	GPU-backed via wgpu texture
video	Video element	Media	src; not rendered
audio	Audio element	Media	src; not rendered
track	Media text track	Media	Void element; src
iframe	Nested browsing context	Media	src, name; not rendered

Interactive

Element	Description	Category	Notes
a	Hyperlink / anchor	Interactive	href, type; focusable when href is set; inline element
details	Disclosure widget	Interactive	name
summary	Details summary/legend	Interactive	Focusable; triggers details open/close
dialog	Dialog box	Interactive

Inline Text Semantics

Element	Description	Category	Notes
strong	Strong importance	Inline	UA: font-weight: bold
b	Bring attention	Inline	UA: font-weight: bold
em	Stress emphasis	Inline	UA: font-style: italic
i	Idiomatic text	Inline	UA: font-style: italic
u	Unarticulated annotation	Inline	UA: text-decoration: underline
s	Strikethrough	Inline	UA: text-decoration: line-through
del	Deleted text	Inline	UA: text-decoration: line-through
ins	Inserted text	Inline	UA: text-decoration: underline
code	Inline code	Inline	UA: font-family: monospace
kbd	Keyboard input	Inline	UA: font-family: monospace
samp	Sample output	Inline	UA: font-family: monospace
var	Variable	Inline	Usually italic
mark	Marked/highlighted text	Inline
small	Small print	Inline	UA: font-size: smaller
sub	Subscript	Inline	UA: vertical-align: sub, font-size: smaller
sup	Superscript	Inline	UA: vertical-align: super, font-size: smaller
abbr	Abbreviation	Inline
cite	Citation	Inline	UA: font-style: italic
q	Inline quotation	Inline	Displays with quotes
dfn	Defining instance	Inline	Usually italic
time	Date/time	Inline
wbr	Line break opportunity	Inline	Void element
bdi	Bidirectional isolate	Inline
bdo	Bidirectional override	Inline
data	Machine-readable data	Inline	value attribute
ruby	Ruby annotation	Inline
rt	Ruby text	Inline	Auto-close on next rt/rp
rp	Ruby fallback parenthesis	Inline	Auto-close on next rt/rp

Ignored Elements

Element	Description	Notes
script	JavaScript	Parsed but entirely ignored; raw-text element
noscript	Fallback for no-script	Parsed but ignored
template	Content template	Parsed inertly; content clonable via tree.clone_template_content_by_id()
slot	Shadow DOM slot	Parsed; name attribute

Global Attributes

All elements (except Text) support these global attributes:

Attribute	Type	Description
id	Option<String>	Element identifier; used by #id selectors and get_element_by_id()
class	Option<String>	Whitespace-separated CSS class list
style	Option<String>	Inline CSS declarations
title	Option<String>	Advisory tooltip text
lang	Option<String>	Language code
dir	Option<HtmlDirection>	Text direction (ltr / rtl / auto)
hidden	Option<bool>	Hide element (display: none semantics via UA cascade)
tabindex	Option<i32>	Tab order; >=0 makes focusable via keyboard
contenteditable	(parsed, not consumed)
draggable	(parsed, not consumed)
spellcheck	(parsed, not consumed)
translate	(parsed, not consumed)
accesskey	(parsed, not consumed)
role	Option<String>	ARIA role
aria-*	HashMap<String, String>	ARIA attributes
data-*	HashMap<String, String>	Custom data attributes