🆚 Speculation Rules vs. WCAG
Speculation Rules is much more popular than WCAG.- Speculation Rules is more popular in all countries.
WCAG is particularly popular in Spain.
Type
About
The Speculation Rules API is a browser API that improves navigation performance by prefetching or prerendering pages that users are likely to visit next.
It uses 
JSON-based rules embedded in 
HTML or HTTP headers, and is designed as a successor to older techniques such as Prefetch and the deprecated Prerender attribute.
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
Categories
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
- 🥈 Second most popular in Switzerland in the Performance Optimization category.
- 🥈 Second most popular in Iran in the Performance Optimization category.
- 🥈 Second most popular in Finland in the Performance Optimization category.
- 🥈 Second most popular in Trinidad and Tobago in the Performance Optimization category.
- 🥈 Second most popular in Liechtenstein in the Performance Optimization category.
- ⬆️ 24th most popular in Hong Kong in the Standards category.
- ⬆️ 31st most popular in Greece in the Standards category.
- ⬆️ 37th most popular in Spain in the Standards category.
- ⬆️ 40th most popular in Italy in the Standards category.
- ⬆️ 46th most popular in the United States 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.
Google company profile🗃️ 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 4,046,631 websites.
- Statistics were last calculated on .
- For more details, see our methodology and disclaimer.