🆚 RSD vs. WCAG
- 📈 RSD is much more popular than WCAG.
- 🌍 RSD is more popular in all countries.
- ⭐ WCAG is particularly popular in Spain.
Type
About
Really Simple Discovery (RSD) is an 
XML format that helps client software find the services needed to read, edit, or "work with" weblogging software.
The Web Content Accessibility Guidelines (WCAG) are an international standard developed by the W3C that defines how to make web content, including text and media, accessible to people with disabilities.
They are technology-agnostic and structured around four core principles (perceivable, operable, understandable, and robust) and define testable success criteria with three conformance levels (A, AA, AAA) used to evaluate accessibility compliance.
Headquarters
Popularity
Determined by the number of sites using each technology.
Market share
Popularity by country
Determined by the number of sites detected from each country.
Awards
- 🥉 Third most popular in El Salvador in the Standards category.
- 🥉 Third most popular in Bhutan in the Standards category.
- 🥉 Third most popular in Libya in the Standards category.
- ⭐ 4th most popular in Spain in the Standards category.
- ⭐ 4th most popular in Brazil in the Standards category.
- ⬆️ 23rd most popular in Hong Kong in the Standards category.
- ⬆️ 28th most popular in Greece in the Standards category.
- ⬆️ 34th most popular in Spain in the Standards category.
- ⬆️ 35th most popular in Italy in the Standards category.
- ⬆️ 37th most popular in India in the Standards category.
Popularity by domain category
Determined by the number of sites in each category.
Top sites
Top-ranked sites that use these technologies.
Compare alternatives
Technologies with similar characteristics.
XFN
OpenSearch
CSS
HTML
JSON🗃️ About This Data
- We evaluate the popularity of technologies based on the number of websites where we detect their usage.
- Technologies without a detectable web footprint, and those we do not track, are not reflected in the calculated market share.
- This report is based on the analysis of 3,511,995 websites.
- Statistics were last calculated on .
- For more details, see our methodology and disclaimer.