⚡ Standards in Denmark

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

Denmark is a Northern European country with a population of over 5.9 million people.

According to our statistics, standards are used on 90.1% of websites from Denmark.

⭐ Most Popular in 2026

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

The most popular is CSS with an impressive share of 96.7%, followed by HTML with 96% and Open Graph with 63%.

CSS 96.7%
HTML 96%
Open Graph 63%
JSON 43.8%
RSD 39.1%
SearchAction 36.5%
DNS Prefetch 34.1%
Preconnect 27.3%
Preload 25.8%
XFN 25.4%
Pingback 17.8%
Speculation Rules 13.7%
YAML 2.9%
XHTML 2.8%
Prefetch 1.8%

🚀 Highlights

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

6. SearchAction ^(-1)
11. Pingback ^(-1)
13. YAML ^(-1)
15. Prefetch ^(-2)
16. GraphQL ^(-4)
17. Trace Context ^(-4)
21. Sass ^(-1)
22. OpenAPI ^(-10)
23. Sitemap ^(-3)
24. IDN ^(-11)

✨ Top Web Standards

Below is a more detailed list of the top 25 of the 46 standards used on sites from Denmark, 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.	96.7%
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.	96%
3	Open Graph Menlo Park, California, United States Enables any web page to become a rich object in a social graph.	63%
4	JSON A lightweight, language-independent data exchange format derived from JavaScript and used to structure and transmit data between systems.	43.8%
5	RSD An XML format that helps client software find the services needed to read, edit, or "work with" weblogging software.	39.1%
6	SearchAction Cambridge, Massachusetts, United States A structured data type from Schema.org that describes a website's search capability.	36.5%
7	DNS Prefetch Cambridge, Massachusetts, United States The rel="dns-prefetch" attribute on HTML elements.	34.1%
8	Preconnect Cambridge, Massachusetts, United States The rel="preconnect" attribute on HTML elements.	27.3%
9	Preload Cambridge, Massachusetts, United States The rel="preload" attribute on HTML elements.	25.8%
10	XFN An HTML microformat that provides a simple way to represent human relationships using links.	25.4%
11	Pingback A method for web authors to request notification when somebody links to one of their documents.	17.8%
12	Speculation Rules Mountain View, California, United States API is used to improve navigation performance by prefetching or even prerendering future navigations.	13.7%
13	YAML A data serialization language designed to be human friendly and work well with modern programming languages for common everyday tasks.	2.9%
14	XHTML Cambridge, Massachusetts, United States An XML-based markup language that extends HTML 4.	2.8%
15	Prefetch Cambridge, Massachusetts, United States The rel="prefetch" attribute on HTML elements.	1.8%
16	GraphQL Menlo Park, California, United States A data query and manipulation language for APIs typically used for remote client-server communications.	1.7%
17	Trace Context Cambridge, Massachusetts, United States Defines standard HTTP headers and a value format for propagating context information that enables distributed tracing.	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%
19	OpenSearch Seattle, Washington, United States A specification that describes a website's search engine, enabling browsers, apps, and services to discover and integrate it.	0.9%
20	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.	0.8%
21	Sass A stylesheet language that compiles to CSS and allows developers to use variables, nested rules, mixins, and functions.	0.8%
22	OpenAPI San Francisco, California, United States A specification language for defining HTTP APIs, typically written in YAML or JSON.	0.7%
23	Sitemap A file in XML format that allows webmasters to inform search engines about URLs on a website that are available for web crawling.	0.5%
24	IDN Internationalized Domain Names allow people around the world to use domain names in local languages, such as Arabic, Chinese, or Cyrillic.	0.4%
25	Less A backward-compatible CSS language extension inspired by Sass that supports variables, mixins, operations, and functions.	0.4%

👉 See Also

🌎 Standards in other countries

Data is based on the analysis of 23,478 websites from Denmark.
Statistics were last calculated on March 21, 2026.
For details, see our methodology and disclaimer.