Standards Ranked #25–#46 on the Web in Portugal in 2026

📈 Standards Ranked #26–#46 in Portugal

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

Portugal is a Southern European country with a population of around 10.3 million people.

The following list shows the standards ranked from 26th to 46th out of 46 used on websites in Portugal.

Rank	Name	Market share
26	Sitemap A file in XML format that allows webmasters to inform search engines about URLs on a website that are available for web crawling.	0.4%
27	Humans.txt A text file that can be created by developers to list the people who have contributed to a website.	0.3%
28	RelMeAuth A proposed open standard for using rel-me links to profiles on OAuth supporting services to authenticate via either those profiles or your own site.	0.3%
29	Text Cambridge, Massachusetts, United States The plain text document format.	0.2%
30	RDF Cambridge, Massachusetts, United States A W3C standard model to describe and exchange graph data on the web.	0.2%
31	ActivityPub A decentralized social networking protocol used by various fediverse services such as Mastodon, Pixelfed, and PeerTube.	0.2%
32	OpenAPI San Francisco, California, United States A specification language for defining HTTP APIs, typically written in YAML or JSON.	0.2%
33	XML Cambridge, Massachusetts, United States A markup language and file format for storing, transmitting, and reconstructing arbitrary data.	0.2%
34	Markdown Philadelphia, Pennsylvania, United States A markup language used to add formatting to plain text documents.	0.1%
35	Prerender The rel="prerender" attribute on HTML elements.	0.1%
36	WCAG Cambridge, Massachusetts, United States The Web Content Accessibility Guidelines are a set of recommendations for making web content more accessible, developed by W3C.	0.1%
37	Webmention Cambridge, Massachusetts, United States A simple protocol to notify any URL when a website links to it, and for web pages to request notifications when somebody links to them.	0.06%
38	JSON Web Token Fremont, California, United States An open standard (RFC 7519) that defines a compact and self-contained way for securely transmitting information between parties as a JSON object.	0.05%
39	OpenTelemetry San Francisco, California, United States A vendor- and tool-agnostic observability framework and toolkit for creating and managing telemetry data such as traces, metrics, and logs.	0.03%
40	Rack A minimal, modular interface and invocation convention that operates between Ruby web servers and web applications to standardize how HTTP requests and responses are exchanged. FreeOpen source	0.03%
41	WebAssembly A portable binary code format that can be run in modern web browsers with near-native performance.	0.03%
42	ESI Cambridge, Massachusetts, United States A simple markup language used to define web page components for dynamic assembly and delivery of web applications at the edge of the Internet.	0.01%
43	OpenPGP A non-proprietary protocol for encrypting email using public key cryptography.	0.007%
44	Onion Sites are websites on the dark web that use the .onion top-level domain and are only accessible through online routing through Tor.	0.007%
45	XMP San Jose, California, United States An ISO standard for creating, processing, and exchanging metadata for digital documents.	0.007%
46	IDN Internationalized Domain Names allow people around the world to use domain names in local languages, such as Arabic, Chinese, or Cyrillic.	0.007%

👉 See Also

🌎 Standards in other countries

Data is based on the analysis of 14,630 websites from Portugal.
Statistics were last calculated on March 21, 2026.
For details, see our methodology and disclaimer.