svelte.dev
Svelte • Web development for the rest of us
Last scanned Aug 2, 2026, 11:00 PM · 8 views
Overall score
Great
Summary
Web development for the rest of us. This website uses Svelte behind Vercel CDN. SEO is fair (65/100) 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
Top issues to fix
10 issues found · 1 high priority
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.
Missing canonical link
SEOAdd <link rel="canonical"> so search engines know which URL variant to index.
Multiple H1 headings found
SEOKeep a single H1 per page and demote the others to H2/H3.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
+4 more issues — details in the sections below.
SEO
6 issue(s) found
Performance
20 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Score history
-2 overall since Jul 26, 2026
- Overall
- 83
- SEO
- 65
- Security
- 75
- Performance
- 100
- Accessibility
- 100
Organization
Company details published in this site's own structured data.
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
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- Vercel
- 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
- svelte.dev
- Valid from
- Jun 18, 2026
- Valid to
- Sep 16, 2026
- Days until expiry
- 44
- 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 · 20 broken
Images
21 total · 0 missing alt
Scripts / Styles
6 scripts · 6 stylesheets
JS / CSS size
23.2 KB · 227 B
Page size
88.1 KB
Robots.txt & Sitemap
- robots.txt
- Not 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
- robots.txt not found
- 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
- 19 ms
- HTML size
- 88.1 KB
- Redirect chain
- https://svelte.dev
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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?
- Hosting provider information for svelte.dev is not available yet.
- What is svelte.dev's SEO score?
- svelte.dev scored 65/100 for SEO in the latest analysis (fair).
- What is svelte.dev's overall website score?
- svelte.dev has an overall SiteGraph score of 83/100, combining SEO, performance, security, and accessibility.
- Has svelte.dev's score changed over time?
- svelte.dev's overall score has declined by 2 points (from 85 to 83) since Jul 26, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card