DNS Gurus
Cached · just now
29 Headers

HTTP Security Headers

Status
Strict-Transport-Security
Present
max-age=2628000
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Excellent
DENY
X-Content-Type-Options
Missing
Not configured
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
  • • Increase HSTS max-age to at least 1 year and add includeSubDomains
  • • 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

3 headers
Connection
Performance
Transfer-Encoding
Transfer-Encoding
Performance
chunked
Vary
Performance
Accept-Encoding, User-Agent

Caching Headers

1 headers
Cache-Control
Caching
private, max-age=0, no-cache, no-store, must-revalidate

Content Headers

1 headers
Content-Type
Content
text/html; charset=utf-8

Server Headers

1 headers
X-Powered-By
Server
Express

CORS Headers

0 headers
No CORS headers found

Cookies Headers

1 headers
Set-Cookie
Cookies
bm_sz=B633FC2E30D47AE4ED12623AD892CF6B~YAAQE2rcF1F7ac6bAQAADqfjBh6wXoSNHZee8VbP8DDM+qsVV077OVtB2UWwea2MgHWiQv/jrHJ/1jnoGVjGIhubA1SRgt0uzrqcMS458TKmWcJA1zA9SaQD2ERelYux7AQkt7GkrMIni/QdL3HRKU8LcffVUChFOwezUB7WepvQscDnU/+cJ1NjoczSHPfZr6T51BtLuiM5F1xwp+9MSC6ECK5cq/g00A0ikKF+vmtv8E1zOReHjmkOvcDn4XozqJX3VYGV0Z5aRq8s1T1E7X4FgFc3GWc3GCKHoZ9IckztrFQXH4cepekY4gMVsF6APYOBADtd4h81YGV5EtpgFsWNQY/SAtL0LAh3A44W~3490870~3618356; Domain=.groupon.fr; Path=/; Expires=Thu, 29 Jan 2026 03:15:05 GMT; Max-Age=14397

Other Headers

20 headers
Date
Other
Wed, 28 Jan 2026 23:15:08 GMT
Link
Other
<https://www2.grouponcdn.com/browse/assets/home_desktop-f7805b283e.css>; rel=preload; as=style, <https://www2.grouponcdn.com/browse/assets/home_desktop-7509b6ffb1.js>; rel=preload; as=script
Server-Timing
Other
rReq;dur=2918, rCon;dur=0, rHdr;dur=2919, hbi;dur=2885
X-Akamai-Transformed
Other
0 - 0 -
X-Application
Other
Pull-Itier
X-B-Cookie
Other
219e0b6c-5681-47fc-9e0b-6c5681c7fc07
X-B3-Traceid
Other
f8ae904a050147f79dd8316c2b2e883e
X-Destination
Other
tls_conveyor_pull_itier
X-Envoy-Upstream-Service-Time
Other
2920
X-External-Request-Id
Other
true
X-Forwarded-Proto
Other
https
X-Mtls-Upstream-Time
Other
2885
X-Original-Request-Id
Other
f8ae904a-0501-47f7-9dd8-316c2b2e883e
X-Page-Id
Other
7703cb5e-8295-462f-83cb-5e8295e62fb8-1769642105654-TH0
X-Request-Id
Other
f8ae904a-0501-47f7-9dd8-316c2b2e883e,f8ae904a-0501-47f7-9dd8-316c2b2e883e
X-Request-Originated-From
Other
envoy-tls-side-car--ingress-https
X-Response-Served-From
Other
routing-service--public--eu-west-1--conveyor-production49
X-S-Cookie
Other
7703cb5e-8295-462f-83cb-5e8295e62fb8
X-Signifyd-Cookie
Other
550de67a-d2c2-4374-8de6-7ad2c283741d
X-Ua-Compatible
Other
IE=edge,chrome=1

Recommendations

Enable compression (gzip/brotli) to improve performance

Consider removing X-Powered-By header to hide server technology