limesurvey.ecg.uni-due.de
Measuring…
limesurvey.ecg.uni-due.de
Scanned:
70/ 100
Score by axis
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Fix what matters first
- 1HTTPS & HTTP→HTTPS redirectHow to fix this →+5
Add a permanent (301) redirect from http:// to https://.
- 2Core security headersHow to fix this →+5
Add X-Content-Type-Options, X-Frame-Options, and Referrer-Policy.
- 3+2
- 4Meta description+3
Add a <meta name="description"> of roughly 50–160 characters.
- 5Canonical URL+2
Add <link rel="canonical"> to avoid duplicate-content issues.
Recommendations are ranked by their impact on your score.
All checks
Security
66/ 100- Warn
HTTPS & HTTP→HTTPS redirect
HTTPS available, but HTTP does not redirect to HTTPS
Add a permanent (301) redirect from http:// to https://.
- Pass
TLS certificate validity
Valid; expires in 193 days
expires 2027-02-06 · GEANT TLS ECC 1Good: valid certificate with 30 days or more to expiry
- Pass
HSTS (Strict-Transport-Security)
Present
max-age=63072000; preload - Warn
Content-Security-Policy
No Content-Security-Policy header
Add a Content-Security-Policy to mitigate and injection.
- Fail
Core security headers
None present
Add X-Content-Type-Options, X-Frame-Options, and Referrer-Policy.
- Pass
Mixed content (HTTP on HTTPS)
No insecure (http://) subresources
- Pass
SPF email anti-spoofing
record present
v=spf1 ip4:132.252.0.0/16 ip4:134.91.0.0/16 ip4:193.30.112.1 ip6:2001:638:501::/48 include:_spf.tivian.com include:_spf.zimpel.de include:spf.server-he.de mx ~all - Pass
DMARC email anti-spoofing
record present
v=DMARC1; p=none; sp=none; adkim=r; aspf=r; pct=100; rua=mailto:dmarc@uni-due.de; ruf=mailto:dmarc@uni-due.de; fo=1 - N/A
Vulnerable front-end libraries
No recognizable front-end library versions detected
- N/A
CMS known vulnerabilities
No CMS detected
Performance
85/ 100- Pass
Time to First Byte
Fast
128 msFast: under 800 ms · Moderate: 800–1800 ms · Slow: over 1800 ms
- Pass
Text compression
Enabled
gzip - Pass
HTTP/2 or HTTP/3
Modern
HTTP/2.0Modern: HTTP/2 or HTTP/3 · Outdated: HTTP/1.1 or older
- Pass
Cache-Control
Present
no-store, no-cache, must-revalidate - N/A
Core Web Vitals (PageSpeed)
PageSpeed Insights timed out / unavailable
SEO
44/ 100- Pass
Page title
42 characters
LimeSurvey | Entertainment Computing GroupGood: 10–70 characters
- Fail
Meta description
Missing meta description
Add a <meta name="description"> of roughly 50–160 characters.
- Warn
Canonical URL
No canonical link
Add <link rel="canonical"> to avoid duplicate-content issues.
- Warn
robots.txt
No robots.txt found
Add a robots.txt to guide crawlers.
- Warn
XML sitemap
No sitemap found
Publish a sitemap.xml and reference it from robots.txt.
- Warn
Single H1
0 H1 tag(s)
Add exactly one <h1> describing the page.
- Pass
Image alt text
1/1 images have alt (100%)
Good: 90% or more with alt text · Poor: under 50%
- Warn
Structured data (JSON-LD)
No structured data
Add schema.org to enable rich results.
Infrastructure
77/ 100- N/A
CMS detection
No CMS fingerprint detected
- Pass
Web server
Identified
nginx/1.30.4 - N/A
CDN detection
No CDN fingerprint detected
- Pass
TLS version
Up to date
TLS 1.3Up to date: TLS 1.2 or 1.3 · Deprecated: TLS 1.0 or 1.1
- Warn
IPv6 (AAAA record)
No AAAA record
Add an AAAA record to serve visitors over IPv6.
Reputation
90/ 100- Pass
Google Safe Browsing
Not flagged
checked: Google Safe Browsing - Pass
Domain blacklist status
Not on major blocklists
checked: Spamhaus DBL, SURBL - N/A
Domain age
Registration date unavailable
- N/A
Domain expiry
Expiry date unavailable
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