Access-Control-Expose-Headers HTTP response header

Access-Control-Expose-Headers

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-Headers	158,559
Percentage of websites that use Access-Control-Expose-Headers header	0.20%
Total discovered header values	3,251
Header uses directives	Yes
Header values are unique or random	No
Most popular in the country	United States

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

Directive	Share	Websites count	Unique Values
request-context	28.73%	45,560	1
content-length	19.43%	30,809	1
content-range	11.56%	18,324	1
content-type	9.25%	14,669	1
x-request-id	4.02%	6,372	1
x-frontend	3.94%	6,253	1
location	3.34%	5,302	1
*	3.26%	5,168	1
date	3.15%	4,993	1
cache-control	2.71%	4,291	1
range	2.27%	3,603	1
x-requested-with	1.88%	2,988	1
transfer-encoding	1.45%	2,300	1
x-csrf-token	1.39%	2,206	1
if-modified-since	1.13%	1,786	1
x-frame-options	1.08%	1,710	1
user-agent	1.05%	1,660	1
keep-alive	1.00%	1,584	1
dnt	0.99%	1,567	1
api-version	0.91%	1,450	1
x-customheader	0.86%	1,358	1
x-cdn-diag	0.47%	747	1
x-proxy-cache	0.10%	164	1

Directive

Websites count

Unique Values

request-context

28.73%

45,560

content-length

19.43%

30,809

content-range

11.56%

18,324

content-type

9.25%

14,669

x-request-id

4.02%

6,372

x-frontend

3.94%

6,253

location

3.34%

5,302

3.26%

5,168

date

3.15%

4,993

cache-control

2.71%

4,291

range

2.27%

3,603

x-requested-with

1.88%

2,988

transfer-encoding

1.45%

2,300

x-csrf-token

1.39%

2,206

if-modified-since

1.13%

1,786

x-frame-options

1.08%

1,710

user-agent

1.05%

1,660

keep-alive

1.00%

1,584

dnt

0.99%

1,567

api-version

0.91%

1,450

x-customheader

0.86%

1,358

x-cdn-diag

0.47%

747

x-proxy-cache

0.10%

164

Domain	Country	Rank
cdn.jsdelivr.net	United States	42
schema.org	United States	64
www.paypal.com	United States	65
vk.com	Russia	74
nytimes.com	United States	77
www.nytimes.com	United States	77

Domain

Country

Rank

Contacts

United States

United States

United States

Russia

United States

United States

Header value	Value prevalence
Request-Context	28.72%
X-Log, X-Reqid	8.91%
Content-Length,Content-Range	6.99%
X-Frontend	3.94%
AMP-Access-Control-Allow-Source-Origin	3.52%
*	3.13%
Content-Length	2.38%
Content-Length, Access-Control-Allow-Origin, Access-Control-Allow-Headers, Content-Type, New-Token, New-Expires-At	2.17%
X-Request-Id	2.14%
Access-Control-Allow-Origin,Access-Control-Allow-Credentials	1.71%
WWW-Authenticate,Server-Authorization	1.52%
Server-Timing	1.32%
Location, X-Request-Id	1.29%
Content-Disposition	1.27%
X-WP-Total, X-WP-TotalPages, Link	1.18%
X-Csrf-Token	1.08%
Content-Type	1.05%
Content-Security-Policy, Location	1.00%
API-Version,X-FRAME-OPTIONS,Content-Security-Policy	0.90%
x-ms-request-id,Content-Length,Date,Transfer-Encoding	0.86%

Header value

Value prevalence

Request-Context

28.72%

X-Log, X-Reqid

8.91%

Content-Length,Content-Range

6.99%

X-Frontend

3.94%

AMP-Access-Control-Allow-Source-Origin

3.52%

3.13%

Content-Length

2.38%

Content-Length, Access-Control-Allow-Origin, Access-Control-Allow-Headers, Content-Type, New-Token, New-Expires-At

2.17%

X-Request-Id

2.14%

Access-Control-Allow-Origin,Access-Control-Allow-Credentials

1.71%

WWW-Authenticate,Server-Authorization

1.52%

Server-Timing

1.32%

Location, X-Request-Id

1.29%

Content-Disposition

1.27%

X-WP-Total, X-WP-TotalPages, Link

1.18%

X-Csrf-Token

1.08%

Content-Type

1.05%

Content-Security-Policy, Location

1.00%

API-Version,X-FRAME-OPTIONS,Content-Security-Policy

0.90%

x-ms-request-id,Content-Length,Date,Transfer-Encoding

0.86%