🆚 Fetch vs. PerformanceObserver
- 📈 Fetch is much more popular than PerformanceObserver.
- 🌎 Fetch is more popular in the United States, the United Kingdom, and Germany.
- 🌍 PerformanceObserver is more popular in the British Virgin Islands and Turkmenistan.
Statistics based on 3.5M+ analyzed websites. About this data
FetchType
Browser API
Browser API
About
Fetch is a modern 
JavaScript API for requesting network resources and exchanging data between web applications and servers.
It provides a promise-based interface for asynchronous HTTP requests, supports streaming request and response bodies, works with service workers, and can handle data formats such as 
JSON, text, blobs, and binary content.
PerformanceObserver is a part of the Performance API that is used to monitor performance measurement events.
Headquarters
Cambridge, Massachusetts, United States
Cambridge, Massachusetts, United States
fetch.spec.whatwg.orgCategories
Browser APIs › Rank #3
Browser APIs › Rank #6
Popularity
Determined by the number of sites using each technology.
The Fetch browser API is 6 times more popular than PerformanceObserver.
Total websites
Market share
Browser APIs
Popularity by country
Determined by the number of sites detected from each country.
Fetch is more popular in the United States, the United Kingdom, and Germany, while PerformanceObserver is more popular in the British Virgin Islands and Turkmenistan.
United States
United Kingdom
Germany
India
Brazil
France
Australia
Netherlands
Canada
Japan
Awards
- 🥈 Second most popular in India in the Browser APIs category.
- 🥈 Second most popular in Brazil in the Browser APIs category.
- 🥈 Second most popular in Spain in the Browser APIs category.
- 🥈 Second most popular in Poland in the Browser APIs category.
- 🥈 Second most popular in Turkey in the Browser APIs category.
- 🥉 Third most popular in the British Virgin Islands in the Browser APIs category.
- ⭐ 4th most popular in Ecuador in the Browser APIs category.
- ⭐ 6th most popular in the United States in the Browser APIs category.
- ⭐ 6th most popular in Australia in the Browser APIs category.
- ⭐ 6th most popular in India in the Browser APIs category.
Popularity by domain category
Determined by the number of sites in each category.
Fetch is more popular among sites focused on online shopping, business, and marketing and merchandising, while PerformanceObserver is more commonly used on motor vehicles, real estate, and finance and banking sites.
Online Shopping
Business
Marketing/Merchandising
Blogs/Wiki
Fashion/Beauty
General News
Internet Services
Education/Reference
Travel
Entertainment
Top sites
Top-ranked sites that use these technologies.
Compare alternatives
Technologies with similar characteristics.
XMLHttpRequest
WebSocket🗃️ 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 3,531,795 websites.
- Statistics were last calculated on .
- For more details, see our methodology and disclaimer.