⚡ Standards in Belgium

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

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

According to our statistics, standards are used on 88.5% of websites from Belgium.

⭐ Most Popular in 2026

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

The most popular is CSS with an impressive share of 96.2%, followed by HTML with 95% and Open Graph with 61.3%.

CSS 96.2%
HTML 95%
Open Graph 61.3%
JSON 41.2%
RSD 31.1%
DNS Prefetch 29.7%
SearchAction 27.7%
Preconnect 24.1%
Preload 21.3%
XFN 19.1%
Pingback 13.1%
Speculation Rules 11.5%
GraphQL 3.3%
XHTML 3.2%
Trace Context 1.5%

🚀 Highlights

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

11. Pingback ^(-1)
13. GraphQL ^(-7)
15. Trace Context ^(-6)
17. Humans.txt ^(-13)
19. Text ^(-8)
24. Less ^(-1)

✨ Top Web Standards

Below is a more detailed list of the top 25 of the 48 standards used on sites from Belgium, 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.	96.2%
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.	95%
3	Open Graph Menlo Park, California, United States Enables any web page to become a rich object in a social graph.	61.3%
4	JSON A lightweight, language-independent data exchange format derived from JavaScript and used to structure and transmit data between systems.	41.2%
5	RSD An XML format that helps client software find the services needed to read, edit, or "work with" weblogging software.	31.1%
6	DNS Prefetch Cambridge, Massachusetts, United States The rel="dns-prefetch" attribute on HTML elements.	29.7%
7	SearchAction Cambridge, Massachusetts, United States A structured data type from Schema.org that describes a website's search capability.	27.7%
8	Preconnect Cambridge, Massachusetts, United States The rel="preconnect" attribute on HTML elements.	24.1%
9	Preload Cambridge, Massachusetts, United States The rel="preload" attribute on HTML elements.	21.3%
10	XFN An HTML microformat that provides a simple way to represent human relationships using links.	19.1%
11	Pingback A method for web authors to request notification when somebody links to one of their documents.	13.1%
12	Speculation Rules Mountain View, California, United States API is used to improve navigation performance by prefetching or even prerendering future navigations.	11.5%
13	GraphQL Menlo Park, California, United States A data query and manipulation language for APIs typically used for remote client-server communications.	3.3%
14	XHTML Cambridge, Massachusetts, United States An XML-based markup language that extends HTML 4.	3.2%
15	Trace Context Cambridge, Massachusetts, United States Defines standard HTTP headers and a value format for propagating context information that enables distributed tracing.	1.5%
16	YAML A data serialization language designed to be human friendly and work well with modern programming languages for common everyday tasks.	1.4%
17	Humans.txt A text file that can be created by developers to list the people who have contributed to a website.	1.3%
18	Prefetch Cambridge, Massachusetts, United States The rel="prefetch" attribute on HTML elements.	1.2%
19	Text Cambridge, Massachusetts, United States The plain text document format.	1%
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.	1%
21	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.	0.9%
22	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.	0.8%
23	OpenSearch Seattle, Washington, United States A specification that describes a website's search engine, enabling browsers, apps, and services to discover and integrate it.	0.8%
24	Less A backward-compatible CSS language extension inspired by Sass that supports variables, mixins, operations, and functions.	0.7%
25	Sass A stylesheet language that compiles to CSS and allows developers to use variables, nested rules, mixins, and functions.	0.5%

👉 See Also

🌎 Standards in other countries

Data is based on the analysis of 26,849 websites from Belgium.
Statistics were last calculated on March 21, 2026.
For details, see our methodology and disclaimer.