langchain.com
LangChain: Observe, Evaluate, and Deploy Reliable AI Agents
Last scanned Aug 1, 2026, 11:00 AM · 13 views
Overall score
Excellent
Summary
LangChain provides the engineering platform and open source frameworks developers use to build, test, and deploy reliable AI agents. This website uses Plausible Analytics behind Cloudflare CDN. SEO is good (80/100) and accessibility is excellent (100/100). Security scores good (85/100) and performance excellent (100/100). Top issue: No structured data (JSON-LD) found.
LangChain provides the engineering platform and open source frameworks developers use to build, test, and deploy reliable AI agents.
Top issues to fix
6 issues found · 1 high priority
Missing Strict-Transport-Security header
SecurityAdd HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
robots.txt not found
SEOPublish /robots.txt with a Sitemap: directive to guide crawlers.
sitemap.xml not found
SEOPublish an XML sitemap and reference it from robots.txt to speed up page discovery.
20 broken links on the page
SEOFix or remove broken links — they waste crawl budget and erode user trust.
SEO
3 issue(s) found
Performance
469 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Score history
+3 overall since Jul 25, 2026
- Overall
- 90
- SEO
- 80
- Security
- 85
- Performance
- 100
- Accessibility
- 100
Organization
Company details published in this site's own structured data.
LangChain provides the engineering platform and open source frameworks developers use to build, test, and deploy reliable AI agents.
Meta tags
- Title
- LangChain: Observe, Evaluate, and Deploy Reliable AI Agents
- Description
- LangChain provides the engineering platform and open source frameworks developers use to build, test, and deploy reliable AI agents.
- Canonical
- https://www.langchain.com
- 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
- —
- CDN provider
- Cloudflare
- 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
- Google Trust Services
- Subject
- www.langchain.com
- Valid from
- Jul 3, 2026
- Valid to
- Oct 1, 2026
- Days until expiry
- 60
- SAN domains
- www.langchain.com
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyEnabled
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 1 cookie(s) observed
Content & assets
Headings
H1 1 · H2 3 · H3 2
Links
30 internal · 28 external · 20 broken
Images
95 total · 0 missing alt
Scripts / Styles
42 scripts · 1 stylesheets
JS / CSS size
53.7 KB · 16.1 KB
Page size
217 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- No structured data (JSON-LD) found
- robots.txt not found
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://langchain.com
- Final URL
- https://www.langchain.com/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 465 ms
- HTML size
- 217 KB
- Redirect chain
- https://langchain.com → https://www.langchain.com/
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does langchain.com use?
- langchain.com is built with jQuery, Plausible Analytics.
- Is langchain.com secure (HTTPS)?
- Yes. langchain.com uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Oct 1, 2026.
- Who hosts langchain.com?
- Hosting provider information for langchain.com is not available yet.
- What is langchain.com's SEO score?
- langchain.com scored 80/100 for SEO in the latest analysis (great).
- What is langchain.com's overall website score?
- langchain.com has an overall SiteGraph score of 90/100, combining SEO, performance, security, and accessibility.
- Has langchain.com's score changed over time?
- langchain.com's overall score has improved by 3 points (from 87 to 90) since Jul 25, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card