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svelte.dev

Svelte • Web development for the rest of us

Last scanned Jul 26, 2026, 5:17 AM

85

Overall score

Great

Summary

Web development for the rest of us. This website uses Svelte hosted on AWS behind Vercel CDN. SEO is fair (70/100) and accessibility is excellent (100/100). Security scores good (75/100) and performance excellent (100/100). Top issue: Missing canonical link.

Web development for the rest of us

United States
Hosted on AWS

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.

  • Missing canonical link

    SEO

    Add <link rel="canonical"> so search engines know which URL variant to index.

  • Multiple H1 headings found

    SEO

    Keep a single H1 per page and demote the others to H2/H3.

  • 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.

70

SEO

5 issue(s) found

100

Performance

19 ms

75

Security

HTTPS & header checks

100

Accessibility

0 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Organization

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

Web development for the rest of us

GitHubGitHubGitHubGitHubGitHubGitHubGitHubGitHubGitHubGitHub

Meta tags

Title
Svelte • Web development for the rest of us
Description
Web development for the rest of us
Canonical
Language
en
Charset
utf-8
Viewport
width=device-width,initial-scale=1
Robots meta
Manifest
https://svelte.dev/manifest.json

OpenGraph & Twitter Card

OpenGraph

og:title
—
og:description
—
og:type
—
og:url
—

Twitter Card

twitter:card
summary
twitter:title
Svelte
twitter:description
Web development for the rest of us

Technologies

Detected frameworks, languages, and tools.

Svelte

Hosting & CDN

Hosting provider
AWS
CDN provider
Vercel
IP address
76.76.21.123
ASN
AS16509 (AMAZON-02 - Amazon.com, Inc., US)

DNS records

TypeValue
A
  • 76.76.21.123
AAAA—
MX
  • in2-smtp.messagingengine.com
  • in1-smtp.messagingengine.com
TXT
  • google-site-verification=3c77ak7h3H3q50wfkn4wWqPB81AwaP11l6UGS_2z2lk
  • google-site-verification=de9MMH-gUcDWFFQD3-tjD2nWdofR3UDSsaafUj9HVpc
  • v=MCPv1; k=ed25519; p=lLXgJJS2PJ0wSEX4XNtcNbE1A68dg4vZ+WaymedYEbs=
  • v=spf1 include:spf.messagingengine.com ?all
  • google-site-verification=DHZNw0pjrHLVyiT4ye8vsk-iXzPoEuVgZdrwdbflYnc
NS
  • cody.ns.cloudflare.com
  • jean.ns.cloudflare.com
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
svelte.dev
Valid from
Jun 18, 2026
Valid to
Sep 16, 2026
Days until expiry
51
SAN domains
svelte.dev

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 2 · H2 2 · H3 0

Links

11 internal · 58 external · 3 broken

Images

21 total · 0 missing alt

Scripts / Styles

6 scripts · 6 stylesheets

JS / CSS size

23.2 KB · 109 KB

Page size

88.1 KB

Robots.txt & Sitemap

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

SEO issues

  • Missing canonical link
  • Multiple H1 headings found
  • No structured data (JSON-LD) found
  • Missing OpenGraph tags
  • sitemap.xml not found

Accessibility issues

No accessibility issues detected.

Scan details

Requested URL
https://svelte.dev
Final URL
https://svelte.dev
HTTP status
200
HTTP version
HTTP/2
Response time
18 ms
HTML size
88.1 KB
Redirect chain
https://svelte.dev

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does svelte.dev use?
svelte.dev is built with Svelte.
Is svelte.dev secure (HTTPS)?
Yes. svelte.dev uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 16, 2026.
Who hosts svelte.dev?
svelte.dev is hosted on AWS, behind Vercel CDN.
What is svelte.dev's SEO score?
svelte.dev scored 70/100 for SEO in the latest analysis (fair).
What is svelte.dev's overall website score?
svelte.dev has an overall SiteGraph score of 85/100, combining SEO, performance, security, and accessibility.