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Technologies > Site Elements > ETag > Strong ETag > by Character Encodings

Usage of Strong ETag as site element broken down by character encodings

This diagram shows the percentages of websites using Strong ETag broken down by character encodings. See technologies overview for explanations on the methodologies used in the surveys.

How to read the diagram:
Strong ETag is used by 15.9% of all the websites.
Strong ETag is used by 15.8% of all the websites that use UTF-8 as character encoding.

Overall

15.9%

15.8%

23.0%

30.5%

7.0%

24.5%

4.5%

52.6%

36.9%

29.1%

21.6%

40.6%

10.0%

16.2%

26.3%

14.6%

19.8%

34.8%

14.0%

13.9%

22.3%

22.8%

30.0%

16.6%

15.3%

39.2%

22.9%

3.4%

11.5%

62.5%

10.2%

30.4%

33.9%

19.5%

12.5%

32.1%

22.7%

11.1%

25.0%

33.3%

54.5%

W3Techs.com, 7 February 2026

Percentages of websites using Strong ETag broken down by character encodings

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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: rfc-editor.org/...

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