ycombinator.com
Y Combinator
Last scanned Jul 18, 2026, 8:49 PM
Overall score
Fair
Top issues to fix
5 issues found · 2 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
No H1 heading found
SEOAdd exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
1 cookie without Secure/HttpOnly flags
SecuritySet Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
Missing canonical link
SEOAdd <link rel="canonical"> so search engines know which URL variant to index.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
Summary
Y Combinator created a new model for funding early stage startups. This website uses Google Analytics hosted on Cloudflare behind Cloudflare CDN. SEO is good (75/100) and accessibility is excellent (90/100). Security scores excellent (90/100) and performance fair (65/100). Top issue: Missing canonical link.
SEO
3 issue(s) found
Performance
1.22 s
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Organization
Company details published in this site's own structured data.
Contact
Email, phone, and address published on this site's own pages.
Meta tags
- Title
- Y Combinator
- Description
- Y Combinator created a new model for funding early stage startups. Four times a year we invest in a large number of startups.
- Canonical
- Language
- en
- Charset
- utf-8
- Viewport
- initial-scale=1, width=device-width, height=device-height
- Robots meta
- follow
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- Cloudflare
- CDN provider
- Cloudflare
- IP address
- 104.20.46.159
- 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
- Let's Encrypt
- Subject
- ycombinator.com
- Valid from
- Jul 6, 2026
- Valid to
- Oct 4, 2026
- Days until expiry
- 77
- SAN domains
- *.ycombinator.com, ycombinator.com
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyEnabled
- Permissions-PolicyMissing
Compression: gzip · 2 cookie(s) observed
Content & assets
Headings
H1 0 · H2 6 · H3 11
Links
50 internal · 21 external · 0 broken
Images
85 total · 0 missing alt
Scripts / Styles
16 scripts · 25 stylesheets
JS / CSS size
1.4 MB · 730 KB
Page size
292 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 4
- sitemap.xml
- Found
- URLs in sitemap
- 95
SEO issues
- Missing canonical link
- No H1 heading found
- No structured data (JSON-LD) found
Accessibility issues
- No H1 heading found
Careers
Scan details
- Requested URL
- https://ycombinator.com
- Final URL
- https://www.ycombinator.com/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 1.21 s
- HTML size
- 292 KB
- Redirect chain
- https://ycombinator.com → https://www.ycombinator.com/
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Frequently asked questions
- What technology does ycombinator.com use?
- ycombinator.com is built with Laravel, Ruby on Rails, Google Analytics.
- Is ycombinator.com secure (HTTPS)?
- Yes. ycombinator.com uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 4, 2026.
- Who hosts ycombinator.com?
- ycombinator.com is hosted on Cloudflare, behind Cloudflare CDN.
- What is ycombinator.com's SEO score?
- ycombinator.com scored 75/100 for SEO in the latest analysis (fair).
- What is ycombinator.com's overall website score?
- ycombinator.com has an overall SiteGraph score of 79/100, combining SEO, performance, security, and accessibility.
- Is ycombinator.com hiring?
- Yes. ycombinator.com has 31 open roles listed on their careers page.
OpenGraph & Twitter Card
OpenGraph
Twitter Card