swagger.io
API Documentation & Design Tools for Teams | Swagger
Last scanned Jul 25, 2026, 12:25 PM · 2 views
Overall score
Great
Summary
Simplify API development for users, teams, and enterprises with our open source and professional toolset. This website uses Astro hosted on Cloudflare behind Cloudflare CDN. SEO is good (85/100) and accessibility is good (85/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Meta description longer than 160 characters.
Simplify API development for users, teams, and enterprises with our open source and professional toolset. Findogut how Swagger can help you and get started today.
- United States
- Hosted on Cloudflare
Top issues to fix
8 issues found · 2 high priority
Missing Strict-Transport-Security header
SecurityAdd HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
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.
Meta description longer than 160 characters
SEOTrim the meta description to under 160 characters to avoid truncation in search results.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
+2 more issues — details in the sections below.
SEO
2 issue(s) found
Performance
24 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Organization
Company details published in this site's own structured data.
Simplify API development for users, teams, and enterprises with our open source and professional toolset. Findogut how Swagger can help you and get started today.
Contact
Email, phone, and address published on this site's own pages.
Source: https://swagger.io/support/
Meta tags
- Title
- API Documentation & Design Tools for Teams | Swagger
- Description
- Simplify API development for users, teams, and enterprises with our open source and professional toolset. Findogut how Swagger can help you and get started today.
- Canonical
- https://swagger.io/
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width,initial-scale=1
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- Cloudflare
- CDN provider
- Cloudflare
- IP address
- 172.66.0.69
- ASN
- AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)
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
- swagger.io
- Valid from
- Jul 6, 2026
- Valid to
- Oct 4, 2026
- Days until expiry
- 71
- SAN domains
- swagger.io
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 5 · H3 4
Links
30 internal · 28 external · 12 broken
Images
25 total · 12 missing alt
Scripts / Styles
4 scripts · 2 stylesheets
JS / CSS size
8.2 KB · 2.6 KB
Page size
80.8 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 0
- sitemap.xml
- Found
- URLs in sitemap
- -1
SEO issues
- Meta description longer than 160 characters
- No structured data (JSON-LD) found
Accessibility issues
- More than 20% of images are missing alt text
Scan details
- Requested URL
- https://swagger.io
- Final URL
- https://swagger.io
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 23 ms
- HTML size
- 80.8 KB
- Redirect chain
- https://swagger.io
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does swagger.io use?
- swagger.io is built with Astro.
- Is swagger.io secure (HTTPS)?
- Yes. swagger.io uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Oct 4, 2026.
- Who hosts swagger.io?
- swagger.io is hosted on Cloudflare, behind Cloudflare CDN.
- What is swagger.io's SEO score?
- swagger.io scored 85/100 for SEO in the latest analysis (great).
- What is swagger.io's overall website score?
- swagger.io has an overall SiteGraph score of 84/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card