🆚 Lazysizes vs. Rocket Loader
- 📈 Lazysizes is twice as popular as Rocket Loader.
- 🌎 Lazysizes is more popular in the United States, Japan, and the United Kingdom.
- 🌍 Rocket Loader is more popular in Indonesia, Turkey, and Israel.
Statistics based on 3.3M+ analyzed websites. About this data
Lazysizes
Rocket LoaderType
JavaScript library
Performance optimization technology
About
Lazysizes is a fast lazy loader library for images, iframes, and scripts/widgets.
CloudFlare Rocket Loader prioritizes website content by delaying loading of all 
JavaScript until after rendering.
Headquarters
Berlin, Germany
San Francisco, California, United States
Pricing
Free ✔️Open source
Free version ✔️
Pro$25/month
Business$250/month
EnterpriseCustom
Categories
JavaScript Libraries › Rank #29
Performance Optimization › Rank #6
Performance Optimization › Rank #9
Popularity
Determined by the number of sites using each technology.
The Lazysizes JavaScript library is 2.4 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.
Lazysizes is more popular in the United States, Japan, and the United Kingdom, while Rocket Loader is more popular in Indonesia, Turkey, and Israel.
United States
Japan
United Kingdom
Germany
Italy
France
Spain
Australia
India
Brazil
Awards
- ⭐ 6th most popular in the United States in the Performance Optimization category.
- ⭐ 6th most popular in Japan in the Performance Optimization category.
- ⭐ 6th most popular in the United Kingdom in the Performance Optimization category.
- ⭐ 6th most popular in Germany in the Performance Optimization category.
- ⭐ 6th most popular in Italy in the Performance Optimization category.
- ⭐ 6th most popular in Indonesia in the Performance Optimization category.
- ⭐ 6th most popular in Turkey in the Performance Optimization category.
- ⭐ 6th most popular in Israel 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.
Popularity by domain category
Determined by the number of sites in each category.
Lazysizes is more popular among sites focused on business, online shopping, and marketing and merchandising, while Rocket Loader is more commonly used on Internet services and technical, business forums sites.
Business
Online Shopping
Marketing/Merchandising
Blogs/Wiki
Internet Services
Education/Reference
Entertainment
Travel
General News
Fashion/Beauty
Top sites
Top-ranked sites that use these technologies.
Compare alternatives
Technologies with similar characteristics.
Beasties
Partytown
DNS Prefetch
Speculation Rules🗃️ 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 3,375,483 websites.
- Statistics were last calculated on .
- For more details, see our methodology and disclaimer.