astro.build
Astro
Last scanned Jul 25, 2026, 8:25 PM · 1 view
Overall score
Great
Summary
Astro builds fast content sites, powerful web applications, dynamic server APIs, and everything in-between. This website uses Astro hosted on Cloudflare behind Cloudflare CDN. SEO is excellent (90/100) and accessibility is excellent (100/100). Security scores fair (65/100) and performance excellent (90/100). Top issue: No structured data (JSON-LD) found.
Astro builds fast content sites, powerful web applications, dynamic server APIs, and everything in-between.
- United States
- Hosted on Cloudflare
Top issues to fix
6 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.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
2 broken links on the page
SEOFix or remove broken links — they waste crawl budget and erode user trust.
SEO
1 issue(s) found
Performance
31 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Organization
Company details published in this site's own structured data.
Astro builds fast content sites, powerful web applications, dynamic server APIs, and everything in-between.
Contact
Email, phone, and address published on this site's own pages.
- your@email.com
Meta tags
- Title
- Astro
- Description
- Astro builds fast content sites, powerful web applications, dynamic server APIs, and everything in-between.
- Canonical
- https://astro.build/
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- max-image-preview:large
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- Cloudflare
- CDN provider
- Cloudflare
- IP address
- 104.18.0.156
- ASN
- AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX |
|
| TXT |
|
| NS |
|
| CAA | — |
| CNAME | — |
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Google Trust Services
- Subject
- astro.build
- Valid from
- Jul 22, 2026
- Valid to
- Oct 20, 2026
- Days until expiry
- 86
- SAN domains
- astro.build, contribute.docs.astro.build, *.contribute.docs.astro.build
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 1 · H2 16 · H3 14
Links
52 internal · 48 external · 2 broken
Images
41 total · 0 missing alt
Scripts / Styles
11 scripts · 2 stylesheets
JS / CSS size
2.5 KB · 4.1 KB
Page size
315 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 0
- sitemap.xml
- Found
- URLs in sitemap
- -1
SEO issues
- No structured data (JSON-LD) found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://astro.build
- Final URL
- https://astro.build
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 25 ms
- HTML size
- 315 KB
- Redirect chain
- https://astro.build
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does astro.build use?
- astro.build is built with Astro, Svelte, Tailwind CSS.
- Is astro.build secure (HTTPS)?
- Yes. astro.build uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Oct 20, 2026.
- Who hosts astro.build?
- astro.build is hosted on Cloudflare, behind Cloudflare CDN.
- What is astro.build's SEO score?
- astro.build scored 90/100 for SEO in the latest analysis (excellent).
- What is astro.build's overall website score?
- astro.build has an overall SiteGraph score of 86/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card