What technology does typescriptlang.org use?

typescriptlang.org is built with Gatsby.

Is typescriptlang.org secure (HTTPS)?

Yes. typescriptlang.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 29, 2026.

Who hosts typescriptlang.org?

Hosting provider information for typescriptlang.org is not available yet.

What is typescriptlang.org's SEO score?

typescriptlang.org scored 70/100 for SEO in the latest analysis (fair).

What is typescriptlang.org's overall website score?

typescriptlang.org has an overall SiteGraph score of 85/100, combining SEO, performance, security, and accessibility.

Has typescriptlang.org's score changed over time?

typescriptlang.org's overall score has stayed steady at 85/100 since Jul 25, 2026.

typescriptlang.org

TypeScript: JavaScript With Syntax For Types.

Last scanned Aug 1, 2026, 9:00 AM · 17 views

Overall score

Great

Summary

TypeScript extends JavaScript by adding types to the language. This website uses Gatsby behind Fastly CDN. SEO is fair (70/100) and accessibility is excellent (100/100). Security scores good (75/100) and performance excellent (100/100). Top issue: Meta description longer than 160 characters.

TypeScript extends JavaScript by adding types to the language. TypeScript speeds up your development experience by catching errors and providing fixes before you even run your code.

Top issues to fix

9 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.
Meta description longer than 160 characters
SEO
Trim the meta description to under 160 characters to avoid truncation in search results.
Missing canonical link
SEO
Add <link rel="canonical"> so search engines know which URL variant to index.
No structured data (JSON-LD) found
SEO
Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.

+3 more issues — details in the sections below.

SEO

5 issue(s) found

100

Performance

131 ms

Security

HTTPS & header checks

100

Accessibility

0 issue(s) found

Score history

0 overall since Jul 25, 2026

Overall: 85
SEO: 70
Security: 75
Performance: 100
Accessibility: 100

Organization

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

TypeScript extends JavaScript by adding types to the language. TypeScript speeds up your development experience by catching errors and providing fixes before you even run your code.

X (Twitter)

Meta tags

Title: TypeScript: JavaScript With Syntax For Types.
Description: TypeScript extends JavaScript by adding types to the language. TypeScript speeds up your development experience by catching errors and providing fixes before you even run your code.
Canonical
Language: en
Charset: utf-8
Viewport: width=device-width, initial-scale=1, shrink-to-fit=no
Robots meta
Manifest: https://www.typescriptlang.org/manifest.webmanifest

Technologies

Detected frameworks, languages, and tools.

Gatsby

Hosting & CDN

Hosting provider: —
CDN provider: Fastly
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: Let's Encrypt
Subject: www.typescriptlang.org
Valid from: Jul 1, 2026
Valid to: Sep 29, 2026
Days until expiry: 59
SAN domains: www.typescriptlang.org

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 7 · H3 7

Links

14 internal · 23 external · 20 broken

Images

3 total · 0 missing alt

Scripts / Styles

7 scripts · 0 stylesheets

JS / CSS size

4.5 KB · 124 KB

Page size

253 KB

Robots.txt & Sitemap

robots.txt: Not found
Disallow rules: 0
sitemap.xml: Not found
URLs in sitemap: 0

SEO issues

Meta description longer than 160 characters
Missing canonical link
No structured data (JSON-LD) found
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://typescriptlang.org
Final URL: https://www.typescriptlang.org/
HTTP status: 200
HTTP version: HTTP/2
Response time: 126 ms
HTML size: 253 KB
Redirect chain: https://typescriptlang.org → https://www.typescriptlang.org/

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Frequently asked questions

What technology does typescriptlang.org use?: typescriptlang.org is built with Gatsby.
Is typescriptlang.org secure (HTTPS)?: Yes. typescriptlang.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 29, 2026.
Who hosts typescriptlang.org?: Hosting provider information for typescriptlang.org is not available yet.
What is typescriptlang.org's SEO score?: typescriptlang.org scored 70/100 for SEO in the latest analysis (fair).
What is typescriptlang.org's overall website score?: typescriptlang.org has an overall SiteGraph score of 85/100, combining SEO, performance, security, and accessibility.
Has typescriptlang.org's score changed over time?: typescriptlang.org's overall score has stayed steady at 85/100 since Jul 25, 2026.