🆚 Preload vs. Speculation Rules
- 📈 Speculation Rules is slightly more popular than Preload.
- 🌎 Speculation Rules is more popular in the United States, the United Kingdom, and Germany.
- 🌍 Preload is more popular in Russia, Indonesia, and Turkey.
Speculation RulesType
About
The rel="preload" attribute on 
HTML <link> elements instructs web browsers to fetch important resources early before they are requested during page rendering.
It is commonly used to prioritize fonts, stylesheets, scripts, images, and other critical assets, helping reduce render delays and improve page loading performance.
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.
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
- 🥇 Most popular in Cambodia in the Performance Optimization category.
- 🥇 Most popular in Saint Helena in the Performance Optimization category.
- 🥈 Second most popular in Indonesia in the Performance Optimization category.
- 🥈 Second most popular in Austria in the Performance Optimization category.
- 🥈 Second most popular in Uzbekistan in the Performance Optimization category.
- 🥈 Second most popular in Germany in the Performance Optimization category.
- 🥈 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.
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 3,814,833 websites.
- Statistics were last calculated on .
- For more details, see our methodology and disclaimer.