HTTP response header

The only directive defined in HTTP/1.1 is the no-cache directive. It is used to tell caching proxies to contact the server for the requested document instead of using its local cache

Header usage statistics

Pragma response header information and usage statistics.

Websites using header Pragma 14,567,708
Percentage of websites that use Pragma header 14.61%
Total discovered header values 398
Header uses directives Yes
Header values are unique or random No
Most popular in the country United States of America

Pragma Directives (1 total)

  • no-cache

Pragma Directives

Pragma directives value information and usage statistics

Directive Share Websites count Unique Values
no-cache 97.80% 14,246,547 6

Distribution by websites popularity

Pragma detection in the top websites by popularity

Top 10k sites 2,076 websites
Top 100k sites 20,338 websites
Top 1m sites 213,676 websites

Websites utilizing Pragma

List of websites that use Pragma header

Domain Country Rank Contacts United States of America 1 United States of America 2 United States of America 6 United States of America 6 United States of America 7 United States of America 9
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Geographical Distribution

Header usage distribution by websites across the globe.

Common header values

List of top common Pragma header values

Header value Value prevalence
no-cache 97.45%
public 1.94%
cache 0.16%
no-cache, no-cache 0.13%
private 0.09%
nocache 0.06%
No-Cache,No-Cache 0.05%
no-store 0.02%
max-age=300 0.01%
no-cache,no-cache,no-cache,no-cache,no-cache 0.01%
max-age=3600 0.01%
no-cache, no-store 0.01%
no-store,no-cache 0.00%
no-cache,no-cache,no-cache,no-cache,no-cache,no-cache 0.00%
no-cache,no-cache,no-cache,no-cache 0.00%
no-cache,no-store 0.00%
no-cache,no-cache,no-cache 0.00%
- 0.00%
no-store, no-cache 0.00%
no-cache, no-cache, no-cache 0.00%