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astral.sh

Astral: High-performance Python tooling

Last scanned Aug 2, 2026, 9:00 AM · 8 views

86

Overall score

Great

Summary

Astral builds high-performance developer tools for the Python ecosystem: Ruff, ty, and uv, an extremely fast Python package manager, written in Rust. This website uses Next.js behind Cloudflare CDN. SEO is good (80/100) and accessibility is excellent (90/100). Security scores good (75/100) and performance excellent (100/100). Top issue: No structured data (JSON-LD) found.

Astral builds high-performance developer tools for the Python ecosystem: Ruff, ty, and uv, an extremely fast Python package manager, written in Rust.

Top issues to fix

8 issues found · 1 high priority

  • 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.

  • sitemap.xml not found

    SEO

    Publish an XML sitemap and reference it from robots.txt to speed up page discovery.

+2 more issues — details in the sections below.

80

SEO

3 issue(s) found

100

Performance

26 ms

75

Security

HTTPS & header checks

90

Accessibility

1 issue(s) found

Score history

-4 overall since Jul 26, 2026

Overall
86
SEO
80
Security
75
Performance
100
Accessibility
90

Organization

Company details published in this site's own structured data.

Astral builds high-performance developer tools for the Python ecosystem: Ruff, ty, and uv, an extremely fast Python package manager, written in Rust.

GitHubX (Twitter)

Meta tags

Title
Astral: High-performance Python tooling
Description
Astral builds high-performance developer tools for the Python ecosystem: Ruff, ty, and uv, an extremely fast Python package manager, written in Rust.
Canonical
https://astral.sh/
Language
Charset
utf-8
Viewport
initial-scale=1.0, width=device-width
Robots meta
index,follow
Manifest
https://astral.sh/static/site.webmanifest

OpenGraph & Twitter Card

OpenGraph

og:title
Astral: High-performance Python tooling
og:description
Astral builds high-performance developer tools for the Python ecosystem: Ruff, ty, and uv, an extremely fast Python package manager, written in Rust.
og:type
—
og:url
https://astral.sh/

Twitter Card

twitter:card
summary_large_image
twitter:title
—
twitter:description
—

Technologies

Detected frameworks, languages, and tools.

Next.js

Hosting & CDN

Hosting provider
—
CDN provider
Cloudflare
IP address
—
ASN
—

DNS records

TypeValue
A—
AAAA—
MX—
TXT—
NS—
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Google Trust Services
Subject
astral.sh
Valid from
Jul 24, 2026
Valid to
Oct 22, 2026
Days until expiry
81
SAN domains
astral.sh, pytorch.astral.sh

Security headers

  • Strict-Transport-SecurityEnabled
  • 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 5 · H3 4

Links

7 internal · 8 external · 15 broken

Images

49 total · 0 missing alt

Scripts / Styles

15 scripts · 2 stylesheets

JS / CSS size

5.9 KB · 0 B

Page size

141 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

Accessibility issues

  • Missing <html lang> attribute

Scan details

Requested URL
https://astral.sh
Final URL
https://astral.sh
HTTP status
200
HTTP version
HTTP/2
Response time
24 ms
HTML size
141 KB
Redirect chain
https://astral.sh

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does astral.sh use?
astral.sh is built with Next.js.
Is astral.sh secure (HTTPS)?
Yes. astral.sh uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Oct 22, 2026.
Who hosts astral.sh?
Hosting provider information for astral.sh is not available yet.
What is astral.sh's SEO score?
astral.sh scored 80/100 for SEO in the latest analysis (great).
What is astral.sh's overall website score?
astral.sh has an overall SiteGraph score of 86/100, combining SEO, performance, security, and accessibility.
Has astral.sh's score changed over time?
astral.sh's overall score has declined by 4 points (from 90 to 86) since Jul 26, 2026.