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 28, 2026.

Who hosts astro.build?

Hosting provider information for astro.build is not available yet.

What is astro.build's SEO score?

astro.build scored 80/100 for SEO in the latest analysis (great).

What is astro.build's overall website score?

astro.build has an overall SiteGraph score of 83/100, combining SEO, performance, security, and accessibility.

Has astro.build's score changed over time?

astro.build's overall score has declined by 3 points (from 86 to 83) since Jul 25, 2026.

astro.build

Astro

Last scanned Aug 1, 2026, 10:00 PM · 10 views

Overall score

Great

Summary

Astro builds fast content sites, powerful web applications, dynamic server APIs, and everything in-between. This website uses Astro behind Cloudflare CDN. SEO is good (80/100) 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.

Top issues to fix

8 issues found · 2 high priority

Missing Strict-Transport-Security header
Security
Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
Security
Add a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing X-Content-Type-Options header
Security
Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
Security
Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
No structured data (JSON-LD) found
SEO
Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.
robots.txt not found
SEO
Publish /robots.txt with a Sitemap: directive to guide crawlers.

+2 more issues — details in the sections below.

SEO

3 issue(s) found

Performance

39 ms

Security

HTTPS & header checks

100

Accessibility

0 issue(s) found

Score history

-3 overall since Jul 25, 2026

Overall: 83
SEO: 80
Security: 65
Performance: 90
Accessibility: 100

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.

LinkedIn X (Twitter)YouTube

Contact

Email, phone, and address published on this site's own pages.

Email: 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.

Astro Svelte Tailwind CSS

Hosting & CDN

Hosting provider: —
CDN provider: Cloudflare
IP address: —
ASN: —

DNS records

Type	Value
A	—
AAAA	—
MX	—
TXT	—
NS	—
CAA	—
CNAME	—
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.3
Issuer: Google Trust Services
Subject: astro.build
Valid from: Jul 30, 2026
Valid to: Oct 28, 2026
Days until expiry: 87
SAN domains: astro.build, telemetry.astro.build, *.telemetry.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 · 20 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: Not found
Disallow rules: 0
sitemap.xml: Not found
URLs in sitemap: 0

SEO issues

No structured data (JSON-LD) found
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://astro.build
Final URL: https://astro.build
HTTP status: 200
HTTP version: HTTP/2
Response time: 33 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 28, 2026.
Who hosts astro.build?: Hosting provider information for astro.build is not available yet.
What is astro.build's SEO score?: astro.build scored 80/100 for SEO in the latest analysis (great).
What is astro.build's overall website score?: astro.build has an overall SiteGraph score of 83/100, combining SEO, performance, security, and accessibility.
Has astro.build's score changed over time?: astro.build's overall score has declined by 3 points (from 86 to 83) since Jul 25, 2026.