html5boilerplate.com website report
HTML5 Boilerplate: The web’s most popular front-end template
Last scanned
Overall score
Great
About html5boilerplate.com
html5boilerplate.com is a website. It describes itself as “HTML5 Boilerplate is a professional front-end template for building fast, robust, and adaptable web apps or sites”. The site is hosted on Cloudflare. It is also on GitHub.
Score profile
Top issues to fix
11 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.
Title longer than 60 characters
SEOShorten the title to under 60 characters so search results don't truncate it.
Meta description longer than 160 characters
SEOTrim the meta description to under 160 characters to avoid truncation in search results.
+5 more issues — details in the sections below.
How it compares
html5boilerplate.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
html5boilerplate.com is built with Google Analytics.
Analytics (1)
Hosting & DNS
html5boilerplate.com is hosted on and delivered through Cloudflare (servers registered in US).
- IP address
- 172.67.70.225
- ASN
- AS13335 · CLOUDFLARENET - Cloudflare, Inc., US
- IPv6
- Supported
- HTTP
- HTTP/2
Show DNS record values
- A
- 172.67.70.225, 104.26.15.91, 104.26.14.91
- AAAA
- 2606:4700:20::681a:f5b, 2606:4700:20::681a:e5b, 2606:4700:20::ac43:46e1
- MX
- _dc-mx.00e406072804.html5boilerplate.com
- NS
- lara.ns.cloudflare.com, todd.ns.cloudflare.com
TXT record contents are not republished; only their count is shown.
Security
html5boilerplate.com uses TLS 1.3 with a certificate valid for 51 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
- 2
- Cookies set
- 0
Email security
html5boilerplate.com scores F for email security, with no SPF record and no DMARC policy.
- SPFNot set
No SPF record: anyone can claim to send mail from this domain.
- 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).
Performance & carbon
html5boilerplate.com scores 100/100 for performance, with an estimated load time of 0.2 s. A visit emits an estimated 0.04 g of CO2 (grade A+).
Page weight
- HTML 50.9 KB
- JavaScript 129 B
- CSS 44.3 KB
- Est. load
- 223 ms
- Response
- 222 ms
- Scripts / CSS
- 2 / 0
Carbon per visitA+
0.04 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
html5boilerplate.com scores 65/100 for SEO and 100/100 for accessibility, with 6 SEO issues to fix.
Heading structure
One H1: good.
Image alt text
12 images · 0 without alt text · 0 lazy-loaded
Links
- External 18
- Broken 1
SEO issues6
- Title longer than 60 characters
- Meta description longer than 160 characters
- Missing canonical link
- No structured data (JSON-LD) found
- Missing OpenGraph tags
- sitemap.xml not found
Accessibility issues0
No accessibility issues detected.
Technical details
Page metadata, social tags, crawl files and scan information.
Meta tags
- Title
- HTML5 Boilerplate: The web’s most popular front-end template
- Description
- HTML5 Boilerplate is a professional front-end template for building fast, robust, and adaptable web apps or sites. Spend more time developing and less time reinventing the wheel.
- Canonical
- Language
- en-US
- Robots meta
Crawl files
- robots.txt
- 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://html5boilerplate.com
- HTTP status
- 200
- Redirects
- https://html5boilerplate.com
- Scanned
- Aug 24, 2026, 1:23 PM
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Frequently asked questions about html5boilerplate.com
- What is html5boilerplate.com?
- html5boilerplate.com is a website. It describes itself as “HTML5 Boilerplate is a professional front-end template for building fast, robust, and adaptable web apps or sites”. The site is hosted on Cloudflare. It is also on GitHub.
- What technology does html5boilerplate.com use?
- html5boilerplate.com is built with Google Analytics.
- Who hosts html5boilerplate.com?
- html5boilerplate.com is hosted on and delivered through Cloudflare (servers registered in US).
- Is html5boilerplate.com secure?
- html5boilerplate.com uses TLS 1.3 with a certificate valid for 51 more days and sets 0 of 6 recommended security headers.
- Is html5boilerplate.com protected against email spoofing?
- html5boilerplate.com scores F for email security, with no SPF record and no DMARC policy.
- How does html5boilerplate.com compare with similar sites?
- html5boilerplate.com scores higher overall than 45% of the 163,243 sites we have scanned.
- What is html5boilerplate.com's overall score?
- html5boilerplate.com has an overall SiteGraph score of 81/100, combining SEO (65), performance (100), security (65) and accessibility (100).
Open Graph & Twitter