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 1,445,634
Percentage of websites that use Pragma header 12.65%
Total discovered header values 187
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 72.53% 1,048,471 1

Distribution by websites popularity

Pragma detection in the top websites by popularity

Top 10k sites 2,110 websites
Top 100k sites 16,561 websites
Top 1m sites 157,268 websites

Websites utilizing Pragma

List of websites that use Pragma header

Domain Country Rank Contacts United States of America 1 United States of America 3 United States of America 7 Ireland 7 United States of America 22,750 United States of America 30,270
See full domain list

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 96.34%
public 2.84%
cache 0.23%
private 0.21%
no-cache, no-cache 0.16%
no-cache,no-cache 0.04%
public, must-revalidate, max-age=10 0.02%
nocache 0.01%
max-age=300 0.01%
- 0.01%
no-store,no-cache 0.01%
no-cache, no-store 0.01%
no-store 0.01%
max-age=3600 0.01%
No-Cache,No-Cache,No-Cache 0.01%
no-cache,no-cache,no-cache,no-cache,no-cache 0.01%
no-cache, no-cache, no-cache 0.00%
no-cache,no-cache,no-cache,no-cache 0.00%
none 0.00%
must-revalidate 0.00%