Open
Cached
·
just now
21
Headers
Detected Technologies from Headers
HTTP Security Headers
Status
Strict-Transport-Security
Missing
Not configured
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Missing
Not configured
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
- • Add Strict-Transport-Security header with max-age of at least 1 year
- • Add Content-Security-Policy header to prevent XSS attacks
- • Add X-Content-Type-Options: nosniff
- • Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
- • 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
No caching headers found
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 10:22:24 GMT
Timing-Allow-Origin
*
X-Backend
main_normal
X-Edge-Backend
envoy-www
X-Geoname-Id
notfound
X-Server
slack-www-hhvm-main-iad-7kqu3ycwfrtg
X-Slack-Backend
r
X-Slack-Edge-Shared-Secret-Outcome
no-match
X-Slack-Shared-Secret-Outcome
no-match
X-Slack-Unique-Id
afhzYAC_mjBMdOlidaugiQAAAB8
alt-svc: h3=":443"; ma=2592000, h3-29=":443"; ma=2592000, quic=":443"; ma=2592000 date: Mon, 04 May 2026 10:22:24 GMT timing-allow-origin: * via: 1.1 slack-prod.tinyspeck.com, envoy-www-iad-egspzcvr,envoy-edge-iad-clwyzkuj x-backend: main_normal x-edge-backend: envoy-www x-envoy-attempt-count: 1 x-envoy-upstream-service-time: 135 x-geoname-id: notfound x-server: slack-www-hhvm-main-iad-7kqu3ycwfrtg x-slack-backend: r x-slack-edge-shared-secret-outcome: no-match x-slack-shared-secret-outcome: no-match x-slack-unique-id: afhzYAC_mjBMdOlidaugiQAAAB8
Recommendations
Enable compression (gzip/brotli) to improve performance
Add Cache-Control header to optimize caching