Changes in the usage of Strong ETag

This diagram shows the percentages of websites that recently changed between Strong ETag and other ETag technologies. See technologies overview for explanations on the methodologies used in the surveys.

How to read the diagram:
1.37% of the websites that are using Strong ETag were using Weak ETag until recently.
0.87% of the websites that were using Strong ETag until recently are now using Weak ETag.

Weak ETag

1.37%

0.87%

W3Techs.com, 3 July 2025

changes from other ETag technologies to Strong ETag

changes from Strong ETag to other ETag technologies

Percentage of websites changing between
Strong ETag and other ETag technologies.

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Technology Brief
Strong ETag
Category: Site Elements
A strong ETag is an HTTP header field for validation of cached web pages, that indicates a byte-for-byte identical page in the cache.
Website: w3.org/...

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