🆚 Cookies vs. ETag
- 📈 Cookies is twice as popular as ETag.
- 🌎 Cookies is more popular in the United States, Germany, and the United Kingdom.
- 🌍 ETag is more popular in Saint Helena, Liberia, and Anguilla.
CookiesType
About
Cookies are small pieces of data that a website stores in a visitor's web browser to preserve information between page requests and browsing sessions.
They are commonly used for user authentication, shopping carts, language and theme preferences, analytics, advertising personalization, and session tracking across websites and web applications.
The ETag HTTP response header is an identifier for a specific version of a resource that is used for cache validation.
It enables browsers to verify whether a cached resource is still up to date by sending the ETag back to the server, which compares it with the current version and returns the resource only if it has changed.
Headquarters
datatracker.ietf.orgCategories
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 China in the Networking category.
- 🥇 Most popular in the British Virgin Islands in the Networking category.
- 🥇 Most popular in Seychelles in the Networking category.
- 🥇 Most popular in the U.S. Virgin Islands in the Networking category.
- 🥇 Most popular in Guernsey in the Networking category.
- 🥈 Second most popular in the British Virgin Islands in the Networking category.
- ⭐ 4th most popular in Japan in the Networking category.
- ⭐ 4th most popular in China in the Networking category.
- ⭐ 4th most popular in Argentina in the Networking category.
- ⭐ 4th most popular in Colombia in the Networking 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.
HTTP 2+
CSP🗃️ 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 3,604,716 websites.
- Statistics were last calculated on .
- For more details, see our methodology and disclaimer.