Open
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29
Headers
Detected Technologies from Headers
HTTP Security Headers
Status
Strict-Transport-Security
Excellent
max-age=31536000; includeSubDomains; preload
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Missing
Not configured
Referrer-Policy
Good
no-referrer
Permissions-Policy
Missing
Not configured
Recommendations
- • Add Content-Security-Policy header to prevent XSS attacks
- • Add X-Content-Type-Options: nosniff
- • Consider adding Permissions-Policy to control browser features
Performance Headers
Connection
close
Transfer-Encoding
chunked
Vary
Accept-Encoding
connection: close transfer-encoding: chunked vary: Accept-Encoding
Caching Headers
Cache-Control
private, no-cache, no-store, must-revalidate
Expires
Sat, 26 Jul 1997 05:00:00 GMT
Pragma
no-cache
cache-control: private, no-cache, no-store, must-revalidate expires: Sat, 26 Jul 1997 05:00:00 GMT pragma: no-cache
Content Headers
Content-Type
text/html; charset=utf-8
content-type: text/html; charset=utf-8
CORS Headers
No CORS headers found
Cookies Headers
Other Headers
Alt-Svc
h3=":443"; ma=2592000, h3-29=":443"; ma=2592000, quic=":443"; ma=2592000
Date
Mon, 04 May 2026 13:40:22 GMT
Timing-Allow-Origin
*
X-Backend
main_normal
X-Edge-Backend
envoy-www
X-Geoname-Id
notfound
X-Robots-Tag
noindex,nofollow
X-Server
slack-www-hhvm-main-iad-9qyf1utpmb3c
X-Slack-Backend
r
X-Slack-Edge-Shared-Secret-Outcome
no-match
X-Slack-Shared-Secret-Outcome
no-match
X-Slack-Unique-Id
afihxirsHQvIyICs4T1Z7wAAACg
alt-svc: h3=":443"; ma=2592000, h3-29=":443"; ma=2592000, quic=":443"; ma=2592000 date: Mon, 04 May 2026 13:40:22 GMT timing-allow-origin: * via: 1.1 slack-prod.tinyspeck.com, envoy-www-iad-bwuhdakg,envoy-edge-iad-jzrwfwuw x-backend: main_normal x-edge-backend: envoy-www x-envoy-attempt-count: 1 x-envoy-upstream-service-time: 102 x-geoname-id: notfound x-robots-tag: noindex,nofollow x-server: slack-www-hhvm-main-iad-9qyf1utpmb3c x-slack-backend: r x-slack-edge-shared-secret-outcome: no-match x-slack-shared-secret-outcome: no-match x-slack-unique-id: afihxirsHQvIyICs4T1Z7wAAACg
Recommendations
Enable compression (gzip/brotli) to improve performance