Keep-Alive

HTTP response header

Header usage statistics

Keep-Alive response header information and usage statistics.

Websites using header Keep-Alive29,579,741
Percentage of websites that use Keep-Alive header29.74%
Total discovered header values6,521
Header uses directivesYes
Header values are unique or randomNo
Most popular in the country US

Keep-Alive directives (2 total)

  • max
  • timeout

Keep-Alive Directives

Keep-Alive directives value information and usage statistics

DirectiveShareWebsites countUnique Values
timeout100.00%29,579,47295
max78.86%23,325,568521

Distribution by websites popularity

Keep-Alive detection in the top websites by popularity

Top 10k sites1,585 websites
Top 100k sites22,299 websites
Top 1m sites316,167 websites

Websites utilizing Keep-Alive

List of websites that use Keep-Alive header

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Geographical Distribution

Header usage distribution by websites across the globe.






Common header values

List of top common Keep-Alive header values

Header valueValue prevalence
timeout=5, max=10041.31%
timeout=158.45%
timeout=56.45%
timeout=2, max=1005.16%
timeout=5, max=754.40%
timeout=3, max=1003.59%
timeout=15, max=1003.00%
timeout=202.30%
timeout=2, max=10002.09%
timeout=601.35%
timeout=301.18%
timeout=5, max=971.02%
timeout=100.99%
timeout=1, max=1000.81%
timeout=10, max=1000.66%
timeout=2, max=5000.61%
timeout=5, max=2000.53%
timeout=5, max=5000.51%
timeout=300, max=5000.45%
timeout=5, max=1500.44%