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Technologies > Site Elements > HTTP/3 > Client-side Languages Segmentation

Distribution of client-side programming languages among websites that use HTTP/3

This diagram shows the percentages of websites using various client-side programming languages among the sites that use HTTP/3. See technologies overview for explanations on the methodologies used in the surveys.

How to read the diagram:
JavaScript is used by 99.6% of all the websites whose client-side programming language we know and that use HTTP/3 as site element.

JavaScript
99.6%
Flash
0.4%
W3Techs.com, 27 April 2025
Percentages of websites using various client-side programming languages among the sites that use HTTP/3

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Technology Brief
HTTP/3
Category: Site Elements
HTTP/3 is the third major version of the HTTP network protocol, derived from the QUIC protocol.
Website: datatracker.ietf.org/...


Latest related posting  read all
Web technology fact of the day
10 July 2023

Usage of HTTP/2 is declining sharply, while usage of HTTP/3 is rising slowly.

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