🆚 Rocket Loader vs. Speculation Rules
- 📈 Speculation Rules is much more popular than Rocket Loader.
- 🌎 Speculation Rules is more popular in the United States, the United Kingdom, and Germany.
- 🌍 Rocket Loader is more popular in the Comoros.
Statistics based on 3.8M+ analyzed websites. About this data
Rocket Loader
Speculation RulesType
Performance optimization technology
Performance optimization technology
About
CloudFlare Rocket Loader prioritizes website content by delaying loading of all 
JavaScript until after rendering.
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
San Francisco, California, United States
Mountain View, California, United States
Pricing
Free version ✔️
Pro $25/month
Business $250/month
Enterprise Custom
Categories
Popularity
Determined by the number of sites using each technology.
Speculation Rules performance optimization technology is 26 times more popular than Rocket Loader.
Total websites
Market share
Performance Optimization
Popularity by country
Determined by the number of sites detected from each country.
Speculation Rules is more popular in the United States, the United Kingdom, and Germany, while Rocket Loader is more popular in the Comoros.
United States
United Kingdom
Germany
Japan
France
Spain
Italy
Australia
Netherlands
Canada
Awards
- ⭐ 6th most popular in Indonesia in the Performance Optimization category.
- ⭐ 6th most popular in Turkey in the Performance Optimization category.
- ⭐ 6th most popular in Bangladesh in the Performance Optimization category.
- ⭐ 6th most popular in Nepal in the Performance Optimization category.
- ⭐ 6th most popular in Nigeria 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.
Speculation Rules is more popular among sites focused on business, marketing and merchandising, and blogs and wiki, while Rocket Loader is more commonly used on travel sites.
Business
Marketing/Merchandising
Blogs/Wiki
Online Shopping
Education/Reference
Internet Services
Entertainment
Health
Non-Profit/Advocacy/NGO
General News
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.