⚡ Semantic Markup in Belgium

Semantic markup is code added to web pages to describe the meaning of content elements and their relationships, giving search engines and other systems clearer context beyond visual layout.

Belgium is a Western European country with a population of over 12 million people.

According to our research, semantic markup technologies are used on 74.6% of websites from Belgium.

⭐ Most Popular in 2026

The following chart shows the top semantic markup technologies in Belgium in 2026, based on market share.

The most popular is ARIA with an impressive share of 88%, followed by Open Graph with 72.8% and Twitter Cards with 51.8%.

ARIA 88%
Open Graph 72.8%
Twitter Cards 51.8%
JSON-LD 46.6%
oEmbed 36.5%
SearchAction 32.9%
Microdata 18%
RDFa 3.6%
Microformats 3.1%
Dublin Core 2.3%
Microformats2 0.09%
Product Ontology 0.01%
GoodRelations 0.01%

🚀 Highlights

Here is a list of the top technologies that are more popular in Belgium than worldwide.
Differences between global and country rankings are shown in parentheses.

8. RDFa ^(-2)

✨ Best Semantic Markup Technologies

Below is a more detailed list of 13 semantic markup technologies used on sites from Belgium, ranked by their market share.

Rank	Name	Market share
1	ARIA Cambridge, Massachusetts, United States A W3C technical specification that defines how to improve the accessibility of web content and applications, particularly those with dynamic interfaces and custom controls.	88%
2	Open Graph Menlo Park, California, United States Enables any web page to become a rich object in a social graph.	72.8%
3	Twitter Cards Bastrop, Texas, United States With Twitter Cards, you can attach rich photos, videos and media experiences to tweets, helping to drive traffic to your website.	51.8%
4	JSON-LD Cambridge, Massachusetts, United States A lightweight linked data format used to embed structured data into web pages.	46.6%
5	oEmbed A format for allowing an embedded representation of a URL on third party sites.	36.5%
6	SearchAction Cambridge, Massachusetts, United States A structured data type from Schema.org that describes a website's search capability.	32.9%
7	Microdata Cambridge, Massachusetts, United States An HTML specification that is used to nest metadata within a document, in parallel with the existing content.	18%
8	RDFa Cambridge, Massachusetts, United States An extension to HTML5 that adds attributes to markup things like people, places, events, recipes, and reviews.	3.6%
9	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.	3.1%
10	Dublin Core A metadata element set used for documents and other objects.	2.3%
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.	0.09%
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.	0.01%
13	GoodRelations A standardized vocabulary for product, price, store, and company data that can be embedded into web pages.	0.01%

👉 See Also

✨ Related Technologies
- WCAG
🌎 Semantic Markup in other countries

Data is based on the analysis of 26,837 websites from Belgium.
Statistics were last calculated on March 20, 2026.
For details, see our methodology and disclaimer.