⚡ Standards in Slovakia

Web standards are a set of guidelines and specifications that define and describe various aspects of the World Wide Web.

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

According to our statistics, standards are used on 91.6% of websites from Slovakia.

⭐ Most Popular in 2026

The following chart shows the top standards on websites in Slovakia in 2026, based on market share.

The most popular is CSS with an impressive share of 98%, followed by HTML with 93.1% and Open Graph with 60.1%.

CSS 98%
HTML 93.1%
Open Graph 60.1%
DNS Prefetch 28.6%
JSON 26.5%
SearchAction 26.4%
RSD 25.7%
Preload 22.9%
Preconnect 22.7%
XFN 15.8%
Pingback 11.7%
Speculation Rules 9.4%
XHTML 5.6%
Less 2.1%
OAuth 1.5%

🚀 Highlights

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

4. DNS Prefetch ^(-2)
6. SearchAction ^(-1)
8. Preload ^(-1)
11. Pingback ^(-1)
14. Less ^(-11)
15. OAuth ^(-1)
16. Prefetch ^(-1)
17. OpenSearch ^(-2)
19. OpenID ^(-5)
25. XML ^(-3)

✨ Top Web Standards

Below is a more detailed list of the top 25 of the 45 standards used on sites from Slovakia, ranked by their market share.

Rank	Name	Market share
1	CSS Cambridge, Massachusetts, United States A stylesheet language used to control the presentation of HTML and XML documents, defining layout, colors, typography, and responsive behavior across different devices.	98%
2	HTML Cambridge, Massachusetts, United States A markup language used to create web pages and is the de facto standard for documents displayed in web browsers.	93.1%
3	Open Graph Menlo Park, California, United States Enables any web page to become a rich object in a social graph.	60.1%
4	DNS Prefetch Cambridge, Massachusetts, United States The rel="dns-prefetch" attribute on HTML elements.	28.6%
5	JSON A lightweight, language-independent data exchange format derived from JavaScript and used to structure and transmit data between systems.	26.5%
6	SearchAction Cambridge, Massachusetts, United States A structured data type from Schema.org that describes a website's search capability.	26.4%
7	RSD An XML format that helps client software find the services needed to read, edit, or "work with" weblogging software.	25.7%
8	Preload Cambridge, Massachusetts, United States The rel="preload" attribute on HTML elements.	22.9%
9	Preconnect Cambridge, Massachusetts, United States The rel="preconnect" attribute on HTML elements.	22.7%
10	XFN An HTML microformat that provides a simple way to represent human relationships using links.	15.8%
11	Pingback A method for web authors to request notification when somebody links to one of their documents.	11.7%
12	Speculation Rules Mountain View, California, United States API is used to improve navigation performance by prefetching or even prerendering future navigations.	9.4%
13	XHTML Cambridge, Massachusetts, United States An XML-based markup language that extends HTML 4.	5.6%
14	Less A backward-compatible CSS language extension inspired by Sass that supports variables, mixins, operations, and functions.	2.1%
15	OAuth Fremont, California, United States An open standard authorization protocol that allows applications to obtain limited access to user accounts without sharing passwords across web, mobile, and desktop environments.	1.5%
16	Prefetch Cambridge, Massachusetts, United States The rel="prefetch" attribute on HTML elements.	1.5%
17	OpenSearch Seattle, Washington, United States A specification that describes a website's search engine, enabling browsers, apps, and services to discover and integrate it.	1.4%
18	IAB TCF Brussels, Belgium An open-source industry standard developed by IAB Europe that helps companies comply with GDPR and ePrivacy requirements when processing personal data in digital advertising ecosystems.	1.2%
19	OpenID San Ramon, California, United States A decentralized authentication protocol based on OAuth 2.0 that enables applications to verify a user's identity through an external identity provider instead of managing credentials directly.	1.1%
20	GraphQL Menlo Park, California, United States A data query and manipulation language for APIs typically used for remote client-server communications.	0.9%
21	Acceptable Ads Berlin, Germany A set of criteria defined by the independent Acceptable Ads Committee that allows publishers to reach ad-blocking users with respectful, non-intrusive and relevant ads.	0.9%
22	Sass A stylesheet language that compiles to CSS and allows developers to use variables, nested rules, mixins, and functions.	0.8%
23	YAML A data serialization language designed to be human friendly and work well with modern programming languages for common everyday tasks.	0.8%
24	Trace Context Cambridge, Massachusetts, United States Defines standard HTTP headers and a value format for propagating context information that enables distributed tracing.	0.6%
25	XML Cambridge, Massachusetts, United States A markup language and file format for storing, transmitting, and reconstructing arbitrary data.	0.5%

👉 See Also

🌎 Standards in other countries

Data is based on the analysis of 9,650 websites from Slovakia.
Statistics were last calculated on March 21, 2026.
For details, see our methodology and disclaimer.