⚡ Semantic Markup

Semantic markup is code that describes elements on a webpage or provides additional information that helps search engines to better understand context.

According to our research, semantic markup technologies are used on 73.5% of all websites.
18.8% of these sites use only one semantic markup technology, 18.7% use two, and 62.5% use three or more simultaneously.

⭐ Most Popular in 2025

The following chart shows the leading semantic markup technologies in 2025, based on market share.

The most popular is ARIA with an impressive share of 85.5%, followed by Open Graph with 70.8% and Twitter Cards with 53.2%.

ARIA 85.5%
Open Graph 70.8%
Twitter Cards 53.2%
JSON-LD 50.6%
oEmbed 40.7%
SearchAction 38.8%
Microdata 21.6%
Microformats 5.9%
Dublin Core 1.5%
RDFa 1.1%
Microformats2 0.1%
Product Ontology 0.08%
GoodRelations 0.03%
e-GMS 0.002%

You can also drill down by country:

Canada

🚀 Country Highlights

Here is a list of technologies that are especially popular in certain countries.
Differences between global and country rankings are shown in parentheses.

Open Graph is #1 in Japan ^(-1)
oEmbed is #1 in El Salvador ^(-4)
Twitter Cards is #2 in Rwanda ^(-1)
JSON-LD is #3 in the Netherlands ^(-1)
Microdata is #4 in Korea ^(-3)
SearchAction is #5 in France ^(-1)
Dublin Core is #8 in Vietnam ^(-1)
RDFa is #8 in Belgium ^(-2)

✨ Best Semantic Markup Technologies

Below is a more detailed list of all semantic markup technologies we detect, ranked by their market share.

Rank	Name	Market share
1	ARIACambridge, Massachusetts, United States A technical specification that defines how to improve the accessibility of web pages.	85.5%
2	Open GraphMenlo Park, California, United States Enables any web page to become a rich object in a social graph.	70.8%
3	Twitter CardsBastrop, Texas, United States With Twitter Cards, you can attach rich photos, videos and media experiences to tweets, helping to drive traffic to your website.	53.2%
4	JSON-LDCambridge, Massachusetts, United States A lightweight linked data format used to embed structured data into web pages.	50.6%
5	oEmbed A format for allowing an embedded representation of a URL on third party sites.	40.7%
6	SearchActionCambridge, Massachusetts, United States A structured data type from Schema.org that describes a website's search capability.	38.8%
7	MicrodataCambridge, Massachusetts, United States An HTML specification that is used to nest metadata within a document, in parallel with the existing content.	21.6%
8	Microformats A set of defined HTML classes and attributes created to serve as descriptive metadata about an element, representing commonly published things like people, events, blog posts, reviews, and so on.	5.9%
9	Dublin Core A metadata element set used for documents and other objects.	1.5%
10	RDFaCambridge, Massachusetts, United States An extension to HTML5 that adds attributes to markup things like people, places, events, recipes, and reviews.	1.1%
11	Microformats2 A set of defined HTML classes and attributes created to serve as descriptive metadata about an element, representing commonly published things like people, events, blog posts, reviews, and so on.	0.1%
12	Product Ontology The Product Types Ontology provides 300,000 definitions for types of product or services that extend the schema.org and GoodRelations standards for e-commerce markup.	0.08%
13	GoodRelations A standardized vocabulary for product, price, store, and company data that can be embedded into web pages.	0.03%
14	e-GMSLondon, United Kingdom A definition of the metadata elements that should be applied to public sector information assets.	0.002%

👉 See Also

🔗 Links
- Semantic HTML

Data is based on the analysis of 2,565,167 websites.
Statistics were last calculated on November 1, 2025.
For details, see our methodology and disclaimer.