Access-Control-Expose-Headers

HTTP response header

The Access-Control-Expose-Headers response header indicates which headers can be exposed as part of the response by listing their names

Header usage statistics

Access-Control-Expose-Headers response header information and usage statistics.

Websites using header Access-Control-Expose-Headers162,327
Percentage of websites that use Access-Control-Expose-Headers header0.17%
Total discovered header values3,191
Header uses directivesYes
Header values are unique or randomNo
Most popular in the country US

Access-Control-Expose-Headers directives (23 total)

  • *
  • api-version
  • cache-control
  • content-length
  • content-range
  • content-type
  • date
  • dnt
  • if-modified-since
  • keep-alive
  • location
  • range
  • request-context
  • transfer-encoding
  • user-agent
  • x-cdn-diag
  • x-csrf-token
  • x-customheader
  • x-frame-options
  • x-frontend
  • x-proxy-cache
  • x-request-id
  • x-requested-with

Access-Control-Expose-Headers Directives

Access-Control-Expose-Headers directives value information and usage statistics

DirectiveShareWebsites countUnique Values
request-context30.90%50,1581
content-length17.80%28,8941
content-range11.64%18,9001
content-type7.74%12,5661
date4.05%6,5741
x-frontend3.85%6,2501
cache-control2.87%4,6621
location2.84%4,6061
*2.80%4,5411
range2.42%3,9261
x-requested-with2.11%3,4311
x-request-id1.81%2,9381
transfer-encoding1.42%2,3051
if-modified-since1.33%2,1561
user-agent1.31%2,1201
keep-alive1.26%2,0421
dnt1.23%2,0021
x-customheader1.09%1,7771
x-frame-options0.85%1,3861
api-version0.76%1,2271
x-cdn-diag0.75%1,2241
x-csrf-token0.40%6571
x-proxy-cache0.12%1891

Distribution by websites popularity

Access-Control-Expose-Headers detection in the top websites by popularity

Top 10k sites248 websites
Top 100k sites1,623 websites
Top 1m sites8,649 websites

Websites utilizing Access-Control-Expose-Headers

List of websites that use Access-Control-Expose-Headers header

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Geographical Distribution

Header usage distribution by websites across the globe.






Common header values

List of top common Access-Control-Expose-Headers header values

Header valueValue prevalence
Request-Context30.88%
X-Log, X-Reqid11.06%
Content-Length,Content-Range6.70%
X-Frontend3.84%
AMP-Access-Control-Allow-Source-Origin3.79%
*2.70%
Content-Length2.27%
Access-Control-Allow-Origin,Access-Control-Allow-Credentials2.03%
WWW-Authenticate,Server-Authorization1.73%
Location, X-Request-Id1.25%
Content-Disposition1.14%
Server-Timing1.09%
date1.07%
Content-Type1.07%
Authorization0.87%
x-ms-request-id,Content-Length,Date,Transfer-Encoding0.86%
Date, Server, Content-Type, Content-Length0.81%
x-auth-token0.78%
x-cdn-diag0.75%
X-Backend-Timestamp, Etag, Last-Modified, X-Object-Manifest, X-Timestamp0.73%