andrewheiss.com website report
Andrew Heiss
Last scanned
Overall score
Great
About andrewheiss.com
andrewheiss.com is a website. It describes itself as “Andrew Heiss is an assistant professor at Georgia State University, researching international NGOs and teaching data science & economics”. It is also on GitHub and YouTube.
Score profile
Top issues to fix
9 issues found · 2 high priority
Missing Strict-Transport-Security header
SecurityAdd HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
Missing canonical link
SEOAdd <link rel="canonical"> so search engines know which URL variant to index.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
+3 more issues — details in the sections below.
How it compares
andrewheiss.com scores higher overall than 45% of the 163,243 sites we have scanned.
vs. All scanned sites
163,243 sitesThe dot is this site; the tick is the typical (median) score for the group. The number on the right is the percentile: the share of the group this site scores above.
Technology stack
andrewheiss.com is built with Google Analytics.
Analytics (1)
Hosting & DNS
- IP address
- 104.236.1.213
- ASN
- —
- IPv6
- Not supported
- HTTP
- HTTP/2
Show DNS record values
- A
- 104.236.1.213
TXT record contents are not republished; only their count is shown.
Security
andrewheiss.com uses TLS 1.3 with a certificate valid for 48 more days and sets 0 of 6 recommended security headers.
Security headers0 of 6 set
- HSTSForces HTTPS
- CSPBlocks injected scripts
- X-Frame-OptionsStops clickjacking
- X-Content-TypeStops MIME sniffing
- Referrer-PolicyLimits URL leakage
- Permissions-PolicyRestricts browser features
TLS certificate
- Names covered
- 1
- Cookies set
- 0
Email security
andrewheiss.com scores F for email security, with SPF and no DMARC policy.
- SPFWeak
Neutral policy; unlisted senders are neither trusted nor rejected.
- DMARCNot set
No DMARC policy: forged mail is not told to be rejected.
- MTA-STSNot set
Not published; mail to this domain can be downgraded to plaintext.
- BIMINot set
Not published (optional).
Mail services authorised in SPF: Fastmail
Performance & carbon
andrewheiss.com scores 90/100 for performance, with an estimated load time of 0.5 s. A visit emits an estimated 0.42 g of CO2 (grade C).
Page weight
- HTML 28.7 KB
- JavaScript 373 KB
- CSS 741 KB
- Est. load
- 470 ms
- Response
- 470 ms
- Scripts / CSS
- 17 / 6
Carbon per visitC
0.42 g CO2 per uncached view
Estimate from the Sustainable Web Design model. HTML, JavaScript and CSS only; images, video and fonts are not measured. Treat it as a lower bound for comparing pages, not an audit.
SEO & accessibility
andrewheiss.com scores 75/100 for SEO and 100/100 for accessibility, with 4 SEO issues to fix.
Heading structure
One H1: good.
Image alt text
1 images · 0 without alt text · 0 lazy-loaded
Links
- Internal 11
- External 26
- Broken 5
SEO issues4
- Missing canonical link
- No structured data (JSON-LD) found
- robots.txt not found
- sitemap.xml not found
Accessibility issues0
No accessibility issues detected.
Technical details
Page metadata, social tags, crawl files and scan information.
Meta tags
- Title
- Andrew Heiss
- Description
- Andrew Heiss is an assistant professor at Georgia State University, researching international NGOs and teaching data science & economics.
- Canonical
- Language
- en
- Robots meta
Crawl files
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
Structured data
No JSON-LD types declared.
- Microdata items
- 0
- RDFa items
- 0
Scan
- Final URL
- https://www.andrewheiss.com/
- HTTP status
- 200
- Redirects
- https://andrewheiss.com → https://www.andrewheiss.com/
- Scanned
- Aug 24, 2026, 1:23 PM
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Frequently asked questions about andrewheiss.com
- What is andrewheiss.com?
- andrewheiss.com is a website. It describes itself as “Andrew Heiss is an assistant professor at Georgia State University, researching international NGOs and teaching data science & economics”. It is also on GitHub and YouTube.
- What technology does andrewheiss.com use?
- andrewheiss.com is built with Google Analytics.
- Is andrewheiss.com secure?
- andrewheiss.com uses TLS 1.3 with a certificate valid for 48 more days and sets 0 of 6 recommended security headers.
- Is andrewheiss.com protected against email spoofing?
- andrewheiss.com scores F for email security, with SPF and no DMARC policy.
- How does andrewheiss.com compare with similar sites?
- andrewheiss.com scores higher overall than 45% of the 163,243 sites we have scanned.
- What is andrewheiss.com's overall score?
- andrewheiss.com has an overall SiteGraph score of 81/100, combining SEO (75), performance (90), security (65) and accessibility (100).
Open Graph & Twitter