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18 19 20 21</head> 22<body> 23 <!-- Header start from PageHeader.j2 --> 24<!-- Static Doc Insert PageHead --> 25 26<div class="devnote"><b>Note</b>: You are viewing the development 27 version of <a href="https://schema.org">Schema.org</a>. 28 See <a href="/docs/howwework.html">how we work</a> for more details. 29</div> 30<div id="container"> 31 <div id="headerwrap"> 32 <div id="pagehead1" class="mobnav"> 33 <div class="header-block" id="pagehead-left"> 34 <div id="sitename2"> 35 <a href="/">Schema.org</a> 36 </div> 37 </div> 38 <div class="header-block header-block-right mobnav" id="pagehead-mid"> 39 <div id="selectionbar2"> 40 <ul> 41 <li> 42 <a href="/docs/documents.html">Docs</a> 43 </li> 44 <li> 45 <a href="/docs/schemas.html">Schemas</a> 46 </li> 47 <li> 48 <a href="https://validator.schema.org">Validate</a> 49 </li> 50 <li> 51 <a href="/docs/about.html">About</a> 52 </li> 53 </ul> 54 </div> <!-- selectionbar --> 55 </div> 56 <div class="header-block header-block-right mobnav" id="pagehead-right"> 57 <div id="cse-search-form2" class="live-only"> 58 <div class="gcse-searchbox-only" data-resultsUrl="/docs/search_results.html"></div> 59 </div> 60 </div> 61 <div class="header-block mobnav" id="navicon2"> 62 <a href="javascript:void(0);" class="icon" onclick="navFunction()"> 63 <svg id="open" width="24px" height="24px" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg"> 64 <g clip-path="url(#clip0_3560_173)"> 65 <path d="M3 18V16H21V18H3ZM3 13V11H21V13H3ZM3 8V6H21V8H3Z" fill="#444746"/> 66 </g> 67 <defs> 68 <clipPath id="clip0_3560_173"> 69 <rect width="24" height="24" fill="white"/> 70 </clipPath> 71 </defs> 72 </svg> 73 <svg id="close" width="24px" height="24px" viewBox="0 -960 960 960" fill="#444746" xmlns="http://www.w3.org/2000/svg"> 74 <path d="m256-200-56-56 224-224-224-224 56-56 224 224 224-224 56 56-224 224 224 224-56 56-224-224-224 224Z"/> 75 </svg> 76 </a> 77 </div> 78 </div> 79 </div> 80 <div class="header-bottom"></div> 81</div> 82<!-- Header end from PageHeader.j2 --> 83 <article id="mainContent" class="faq"> 84 85<h1>Schemas</h1> 86<section> 87<h2>Organization of Schemas</h2> 88The schemas are a set of 'types', each associated with a set of properties. The types are arranged in a hierarchy.<br/> 89The vocabulary currently consists of 826 Types, 1540 Properties 19 Datatypes, 96 Enumerations and 544 Enumeration members.<br/> 90 91<br /><b>Browse the full hierarchy in HTML:</b> 92<ul> 93 <li><a href="../Thing">One page per type</a></li> 94 <li><a href="full.html">Full list of types, shown on one page</a></li> 95</ul> 96 97
97<script src="/docs/termfind/termfind.js"></script>
97 98 <link rel="stylesheet" type="text/css" href="/docs/termfind/termfind.css" /> 99 100 <br /><div> 101 <b>Look up a term using the Term<em>Finder</em>:</b> 102 <div id="termfindwrap"> 103 <div id="termfindprompt"> 104 <input type="text" id="termfind" size="20" style="display: inline-block;" placeholder=" input 3+ characters" onkeyup="suggest(this.value)"> 105 </div> 106 <div id="suggestionwrap"> 107 <div id="suggestions"></div> 108 </div> 109 </div> 110 </div> 111 112 113 114<br /><b>Or you can jump directly to a commonly used type:</b> 115<ul> 116 <li>Creative works: 117 118 119 120 121 <a href="/CreativeWork" 122 class="core" title="CreativeWork">CreativeWork</a>, 123 124 125 126 127 <a href="/Book" 128 class="core" title="Book">Book</a>, 129 130 131 132 133 <a href="/Movie" 134 class="core" title="Movie">Movie</a>, 135 136 137 138 139 <a href="/MusicRecording" 140 class="core" title="MusicRecording">MusicRecording</a>, 141 142 143 144 145 <a href="/Recipe" 146 class="core" title="Recipe">Recipe</a>, 147 148 149 150 151 <a href="/TVSeries" 152 class="core" title="TVSeries">TVSeries</a> ...</li> 153 <li>Embedded non-text objects: 154 155 156 157 158 <a href="/AudioObject" 159 class="core" title="AudioObject">AudioObject</a>, 160 161 162 163 164 <a href="/ImageObject" 165 class="core" title="ImageObject">ImageObject</a>, 166 167 168 169 170 <a href="/VideoObject" 171 class="core" title="VideoObject">VideoObject</a></li> 172 <li> 173 174 175 176 177 <a href="/Event" 178 class="core" title="Event">Event</a></li> 179 <li><a href="meddocs.html">Health and medical types</a>: notes on the health and medical types under 180 181 182 183 184 <a href="/MedicalEntity" 185 class="core" title="MedicalEntity">MedicalEntity</a>.</li> 186 <li> 187 188 189 190 191 <a href="/Organization" 192 class="core" title="Organization">Organization</a></li> 193 <li> 194 195 196 197 198 <a href="/Person" 199 class="core" title="Person">Person</a></li> 200 <li> 201 202 203 204 205 <a href="/Place" 206 class="core" title="Place">Place</a>, 207 208 209 210 211 <a href="/LocalBusiness" 212 class="core" title="LocalBusiness">LocalBusiness</a>, 213 214 215 216 217 <a href="/Restaurant" 218 class="core" title="Restaurant">Restaurant</a> ...</li> 219 <li> 220 221 222 223 224 <a href="/Product" 225 class="core" title="Product">Product</a>, 226 227 228 229 230 <a href="/Offer" 231 class="core" title="Offer">Offer</a>, 232 233 234 235 236 <a href="/AggregateOffer" 237 class="core" title="AggregateOffer">AggregateOffer</a></li> 238 <li> 239 240 241 242 243 <a href="/Review" 244 class="core" title="Review">Review</a>, 245 246 247 248 249 <a href="/AggregateRating" 250 class="core" title="AggregateRating">AggregateRating</a></li> 251 <li> 252 253 254 255 256 <a href="/Action" 257 class="core" title="Action">Action</a></li> 258</ul> 259 260<br/>See also the <a href="releases.html">releases</a> page for recent updates and project history.<br/> 261 262<br /> 263We also have a small set of <a href="../DataType">primitive data types</a> for numbers, text, etc. More details about the data model, etc. are available <a href="datamodel.html">here</a>. 264<br /> 265 266<br />Developer information / Download Machine Readable files (RDF, JSON-LD, etc): 267<ul> 268 <li><a href="developers.html">Schema.org for Developers</a> 269</ul> 270</section> 271<section> 272 273 <h2 id="ext">Extensions</h2> 274 275 <p>As schema.org has grown, we have explored various mechanisms for <a href="/docs/extension.html">community extension</a> as 276 a way of adding more detailed descriptive vocabulary that builds on the schema.org core. Some areas of Schema.org were 277 developed as "named extensions", and have dedicated entry pages. We previously called these "hosted" extensions, but 278 they are best considered simply as views into a single collection of schema definitions. 279</p> 280 281</section> 282<section> 283 284 <h3 id="hosted">Hosted Sections</h3> 285 286<p> 287For example, via the <a href="/docs/auto.home.html">auto</a> section there is a property for <a href="/emissionsCO2">emissionsCO2</a>, 288and via the <a href="/docs/bib.home.html">bib</a> section we have a property <a href="/publisherImprint">publisherImprint</a>. 289However, from the perspective of a publisher, these are simply schema.org properties. </p> 290 291<p>We have a few of these sections:</p> 292<ul> 293 <li><a href="/docs/auto.home.html">auto</a></li> 294 <li><a href="/docs/bib.home.html">bib</a></li> 295 <li><a href="/docs/health-lifesci.home.html">health-lifesci</a></li> 296 <li><a href="/docs/meta.home.html">meta</a></li> 297 <li><a href="/docs/pending.home.html">pending</a></li> 298</ul> 299 300 301<p><b>Note</b>: the 'pending' and 'meta' hosted sections are part of schema.org's schema development process.</p> 302<p id="ext_pending"> 303 We use the '<a href="/docs/pending.home.html">pending</a>' section as a staging area for new schema.org terms that are under discussion and review. 304 Implementors and publishers are cautioned that terms in the <a href="/docs/pending.home.html">pending</a> section 305 may lack consensus and that terminology and definitions could still change significantly after community and <a href="/docs/about.html#cgsg">steering group</a> review. 306 Consumers of schema.org data who encourage use of such terms are <em>strongly encouraged</em> 307 to update implementations and documentation to track any evolving changes, and to share early implementation feedback with the <a href="http://www.w3.org/community/schemaorg">wider community</a>. 308</p> 309 310<p id="ext_meta"> 311The '<a href="/docs/meta.home.html">meta</a>' section is primarily for vocabulary used internally within schema.org to supp
311ort technical definitions and 312schema.org site functionality. These terms are not intended for general usage in the public Web. 313</p> 314<p id="attic"><strong><a href="/docs/attic.home.html">Attic</a></strong> is a special area where terms are archived when deprecated from the core and other sections, or removed from <a href="pending.home.html">pending</a> as not accepted into the full vocabulary. References to terms in the attic area are not normally displayed unless accessed via the term identifier or via the home page. Implementors and data publishers are cautioned not to use terms in the attic area. 315</p> 316 317<p> 318Unlike other core and section terms, these areas may be updated at any time without the need for a full <a href="releases.html">release</a>. 319</p> 320 321</section> 322<section> 323 324<h3 id="extext">External Extensions</h3> 325 326<p>The schema.org <a href="about.html#cgsg">steering group</a> does not officially approve external extensions - they are fully independent. 327 We list here some notable extensions that extend schema.org in interesting and useful ways.</p> 328 329<ul> 330 <li><a href="http://gs1.org/voc/">GS1 Web Vocabulary</a> (<a href="https://blog-schema.org/2016/02/22/gs1-web-vocabulary-welcoming-the-first-schema-org-external-extension/">blog post</a>)</li> 331 <li><a href="https://mlcommons.org/working-groups/data/croissant/">Croissant</a> is an open community-built standardized metadata vocabulary for ML datasets.</li> 332</ul> 333<br/> 334</section> 335 </article><!-- mainContent --> 336 337 338 <!-- Footer start from PageFooter.j2 --> 339 340 <div id="footer"> 341 <p><a href="/docs/terms.html">Terms and conditions</a></p> 342 <div id="versioninfo"> 343 <span class="sep">â¢</span> 344 Schema.org 345 <span class="sep">â¢</span> 346 V30.1 347 <span class="sep">|</span> 348 2026-09-16 349 </div> 350 </div> 351 352
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