All HTML tags
112 living elements, grouped by family — every page tells you when to use it, when not to, and shows it working.
Document structure
Sectioning & landmarks
Grouping content
Inline text semantics
<a><em><strong><small><s><cite><q><dfn><abbr><ruby><rt><rp><data><time><code><var><samp><kbd><sub><sup><i><b><u><mark><bdi><bdo><span><br><wbr>
Edits
Media & embedded content
<img><picture><source><audio><video><track><map><area><iframe><embed><object><svg><math><canvas><fencedframe>
Tables
Forms
<form><label><input><button><select><selectedcontent><datalist><optgroup><option><textarea><output><fieldset><legend><progress><meter>
Interactive
Scripting
Looking for <center>, <font>, or
<marquee>? They are deprecated and deliberately absent —
see MDN's obsolete elements list
for what replaced them.