⚡ Semantic Markup in Slovakia

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.

Slovakia is a Central European country with a population of around 5.4 million people.

According to our research, semantic markup formats are used on 62.7% of websites from Slovakia.

Statistics based on 12K+ analyzed websites. About this data

⭐ Most Popular in 2026

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

The most popular is Open Graph with a substantial share of 90.5%, followed by JSON-LD with 56.1% and Twitter Cards with 49.1%.

Open Graph 90.5%
JSON-LD 56.1%
Twitter Cards 49.1%
Microdata 23%
Dublin Core 5.4%
Microformats 3.8%
RDFa 1.8%
GoodRelations 0.1%
Microformats2 0.09%

🚀 Highlights

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

2. JSON-LD ^(-1)
5. Dublin Core ^(-1)
8. GoodRelations ^(-2)

✨ Best Semantic Markup Formats

Below is a more detailed list of 9 semantic markup formats used on sites from Slovakia, ranked by their market share.

Rank	Name	Market share
1	Open Graph Menlo Park, California, United States A web metadata standard that defines how webpages are described as structured objects for use in social graphs and enables their consistent representation.	90.5%
2	JSON-LD Cambridge, Massachusetts, United States A lightweight linked data format used to embed structured data into web pages in a machine-readable form.	56.1%
3	Twitter Cards Bastrop, Texas, United States A metadata format used by X, originally Twitter, that enables links in posts to display rich previews with images, videos, and interactive media to increase engagement and traffic.	49.1%
4	Microdata Cambridge, Massachusetts, United States An HTML specification used to embed structured metadata within web page content by annotating elements with machine-readable attributes.	23%
5	Dublin Core Roseville, Minnesota, United States A metadata element set used to describe documents and other digital or physical resources in a standardized way.	5.4%
6	Microformats San Francisco, California, United States Microformats (μF) are a set of standardized HTML class names and attributes used to embed descriptive metadata within existing page content for entities such as people, events, reviews, and blog posts.	3.8%
7	RDFa Cambridge, Massachusetts, United States An extension to HTML5 that embeds structured metadata within page content by adding attributes based on the RDF data model.	1.8%
8	GoodRelations Neubiberg, Germany A standardized vocabulary for product, price, store, and company data that can be embedded into web pages and processed by search engines and other data-consuming services.	0.1%
9	Microformats2 San Francisco, California, United States The second generation of the Microformats specification designed to make publishing and parsing structured data in HTML easier for both authors and developers.	0.09%

👉 See Also

🌎 Semantic Markup in other countries

🗃️ About This Data

We evaluate the popularity of technologies based on the number of websites where we detect their usage.
Technologies without a detectable web footprint, and those we do not track, are not reflected in the calculated market share.
This report is based on the analysis of 12,889 websites from Slovakia.
We currently track the presence of 11 semantic markup formats across the web.
Of these, 9 were detected on websites from Slovakia.
Statistics were last calculated on November 3, 2026.
For more details, see our methodology and disclaimer.