⚡ Standards in Iceland

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

Iceland is a Northern European island country with a population of over 380 thousand people.

According to our statistics, standards are used on 86% of websites from Iceland.

⭐ Most Popular in 2026

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

The most popular is HTML with an impressive share of 95.5%, followed by CSS with 94.7% and Open Graph with 62.3%.

HTML 95.5%
CSS 94.7%
Open Graph 62.3%
JSON 39.1%
RSD 32.6%
DNS Prefetch 30.6%
Preload 25.6%
SearchAction 25%
Preconnect 23.6%
XFN 21.5%
Pingback 16.5%
Speculation Rules 15%
GraphQL 4.4%
XHTML 3.3%
Less 3.1%

🚀 Highlights

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

1. HTML ^(-1)
7. Preload ^(-2)
11. Pingback ^(-1)
13. GraphQL ^(-7)
15. Less ^(-10)
20. CGI ^(-3)
23. Text ^(-4)
24. Sitemap ^(-2)

✨ Top Web Standards

Below is a more detailed list of the top 25 of the 39 standards used on sites from Iceland, ranked by their market share.

Rank	Name	Market share
1	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.	95.5%
2	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.	94.7%
3	Open Graph Menlo Park, California, United States Enables any web page to become a rich object in a social graph.	62.3%
4	JSON A lightweight, language-independent data exchange format derived from JavaScript and used to structure and transmit data between systems.	39.1%
5	RSD An XML format that helps client software find the services needed to read, edit, or "work with" weblogging software.	32.6%
6	DNS Prefetch Cambridge, Massachusetts, United States The rel="dns-prefetch" attribute on HTML elements.	30.6%
7	Preload Cambridge, Massachusetts, United States The rel="preload" attribute on HTML elements.	25.6%
8	SearchAction Cambridge, Massachusetts, United States A structured data type from Schema.org that describes a website's search capability.	25%
9	Preconnect Cambridge, Massachusetts, United States The rel="preconnect" attribute on HTML elements.	23.6%
10	XFN An HTML microformat that provides a simple way to represent human relationships using links.	21.5%
11	Pingback A method for web authors to request notification when somebody links to one of their documents.	16.5%
12	Speculation Rules Mountain View, California, United States API is used to improve navigation performance by prefetching or even prerendering future navigations.	15%
13	GraphQL Menlo Park, California, United States A data query and manipulation language for APIs typically used for remote client-server communications.	4.4%
14	XHTML Cambridge, Massachusetts, United States An XML-based markup language that extends HTML 4.	3.3%
15	Less A backward-compatible CSS language extension inspired by Sass that supports variables, mixins, operations, and functions.	3.1%
16	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.	3%
17	Prefetch Cambridge, Massachusetts, United States The rel="prefetch" attribute on HTML elements.	2.5%
18	YAML A data serialization language designed to be human friendly and work well with modern programming languages for common everyday tasks.	2.4%
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.	1.8%
20	CGI Wilmington, Delaware, United States An interface specification that enables web servers to execute an external program to process HTTP requests.	1.3%
21	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%
22	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%
23	Text Cambridge, Massachusetts, United States The plain text document format.	0.8%
24	Sitemap A file in XML format that allows webmasters to inform search engines about URLs on a website that are available for web crawling.	0.6%
25	Sass A stylesheet language that compiles to CSS and allows developers to use variables, nested rules, mixins, and functions.	0.5%

Data is based on the analysis of 2,774 websites from Iceland.
Statistics were last calculated on March 21, 2026.
For details, see our methodology and disclaimer.