tjhsst.edu website report
TJHSST - Thomas Jefferson High School for Science and Technology
Last scanned
Overall score
Fair
About tjhsst.edu
tjhsst.edu is a website. The site is hosted on TJHSST-AS - The Thomas Jefferson High School for Science and Tech., US.
Score profile
Top issues to fix
12 issues found · 3 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing meta description
SEOAdd a ~150-character meta description to control your search-result snippet and lift click-through rate.
Missing viewport meta tag
AccessibilityAdd <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.
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.
Title longer than 60 characters
SEOShorten the title to under 60 characters so search results don't truncate it.
+6 more issues — details in the sections below.
How it compares
tjhsst.edu scores higher overall than 37% 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
tjhsst.edu is built with Nginx and Google Analytics.
Analytics (1)
Servers (1)
Hosting & DNS
tjhsst.edu is hosted on TJHSST-AS - The Thomas Jefferson High School for Science and Tech., US (servers registered in US).
- IP address
- 198.38.18.202
- ASN
- AS3140 · TJHSST-AS - The Thomas Jefferson High School for Science and Tech., US
- IPv6
- Supported
- HTTP
- HTTP/2
Show DNS record values
- A
- 198.38.18.202
- AAAA
- 2001:468:cc0:1802::202
- MX
- mail.tjhsst.edu
- NS
- ipa1.tjhsst.edu, ipa2.tjhsst.edu, ns.uu.net, ns1.tjhsst.edu, ns2.tjhsst.edu
TXT record contents are not republished; only their count is shown.
Security
tjhsst.edu uses TLS 1.3 with a certificate valid for 69 more days and sets 1 of 6 recommended security headers.
Security headers1 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
- 2
- Cookies set
- 0
Email security
tjhsst.edu scores D for email security, with no SPF record and DMARC policy “reject”.
- SPFNot set
No SPF record: anyone can claim to send mail from this domain.
- DMARCGood
Forged mail is rejected; reports are collected.
- MTA-STSNot set
Not published; mail to this domain can be downgraded to plaintext.
- BIMINot set
Not published (optional).
Performance & carbon
tjhsst.edu scores 100/100 for performance, with an estimated load time of 0.2 s. A visit emits an estimated 0.00 g of CO2 (grade A+).
Page weight
- HTML 5.3 KB
- JavaScript 155 B
- CSS 3.7 KB
- Est. load
- 238 ms
- Response
- 238 ms
- Scripts / CSS
- 4 / 1
Carbon per visitA+
0.00 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
tjhsst.edu scores 55/100 for SEO and 95/100 for accessibility, with 7 SEO issues to fix.
Heading structure
One H1: good.
Image alt text
0 images · 0 without alt text · 0 lazy-loaded
Links
- External 2
- Broken 1
SEO issues7
- Title longer than 60 characters
- Missing meta description
- Missing canonical link
- No structured data (JSON-LD) found
- Missing OpenGraph tags
- robots.txt not found
- sitemap.xml not found
Accessibility issues1
- Missing viewport meta tag
Technical details
Page metadata, social tags, crawl files and scan information.
Meta tags
- Title
- TJHSST - Thomas Jefferson High School for Science and Technology
- Description
- 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://tjhsst.edu
- HTTP status
- 200
- Redirects
- https://tjhsst.edu
- Scanned
- Aug 24, 2026, 1:23 PM
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<a href="https://sitegraph.tech/site/tjhsst-edu"><img src="https://sitegraph.tech/badge/tjhsst-edu.svg" alt="tjhsst.edu on SiteGraph" width="190" height="20" /></a>See something wrong on this report? Request a correction or ask for something to be removed.
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Frequently asked questions about tjhsst.edu
- What is tjhsst.edu?
- tjhsst.edu is a website. The site is hosted on TJHSST-AS - The Thomas Jefferson High School for Science and Tech., US.
- What technology does tjhsst.edu use?
- tjhsst.edu is built with Nginx and Google Analytics.
- Who hosts tjhsst.edu?
- tjhsst.edu is hosted on TJHSST-AS - The Thomas Jefferson High School for Science and Tech., US (servers registered in US).
- Is tjhsst.edu secure?
- tjhsst.edu uses TLS 1.3 with a certificate valid for 69 more days and sets 1 of 6 recommended security headers.
- Is tjhsst.edu protected against email spoofing?
- tjhsst.edu scores D for email security, with no SPF record and DMARC policy “reject”.
- How does tjhsst.edu compare with similar sites?
- tjhsst.edu scores higher overall than 37% of the 163,243 sites we have scanned.
- What is tjhsst.edu's overall score?
- tjhsst.edu has an overall SiteGraph score of 79/100, combining SEO (55), performance (100), security (75) and accessibility (95).
Open Graph & Twitter