⚡ Semantic Markup in Vietnam

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.

Vietnam is a Southeast Asian country with a population of over 99 million people.

According to our research, semantic markup technologies are used on 83.8% of websites from Vietnam.

⭐ Most Popular in 2026

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

The most popular is ARIA with an impressive share of 87.2%, followed by Open Graph with 86.2% and JSON-LD with 63.6%.

ARIA 87.2%
Open Graph 86.2%
JSON-LD 63.6%
Twitter Cards 60.3%
SearchAction 52.4%
oEmbed 40.2%
Microdata 18.8%
Dublin Core 5.2%
Microformats 3.7%
RDFa 0.5%
Microformats2 0.3%
Product Ontology 0.2%
GoodRelations 0.06%

🚀 Highlights

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

3. JSON-LD ^(-1)
5. SearchAction ^(-1)
8. Dublin Core ^(-1)

✨ Best Semantic Markup Technologies

Below is a more detailed list of 13 semantic markup technologies used on sites from Vietnam, 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.	87.2%
2	Open Graph Menlo Park, California, United States Enables any web page to become a rich object in a social graph.	86.2%
3	JSON-LD Cambridge, Massachusetts, United States A lightweight linked data format used to embed structured data into web pages.	63.6%
4	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.	60.3%
5	SearchAction Cambridge, Massachusetts, United States A structured data type from Schema.org that describes a website's search capability.	52.4%
6	oEmbed A format for allowing an embedded representation of a URL on third party sites.	40.2%
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%
8	Dublin Core A metadata element set used for documents and other objects.	5.2%
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.	3.7%
10	RDFa Cambridge, Massachusetts, United States An extension to HTML5 that adds attributes to markup things like people, places, events, recipes, and reviews.	0.5%
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.	0.3%
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.	0.2%
13	GoodRelations A standardized vocabulary for product, price, store, and company data that can be embedded into web pages.	0.06%

👉 See Also

✨ Related Technologies
- WCAG
🌎 Semantic Markup in other countries

Data is based on the analysis of 25,590 websites from Vietnam.
Statistics were last calculated on March 21, 2026.
For details, see our methodology and disclaimer.