d2l.ai
Dive into Deep Learning — Dive into Deep Learning 1.0.3 documentation
Last scanned Aug 7, 2026, 4:00 AM · 6 views
Overall score
Fair
Summary
This website uses Google Analytics hosted on AWS behind CloudFront CDN. SEO is fair (60/100) and accessibility is fair (70/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Title longer than 60 characters.
- United States
- Hosted on AWS
Top issues to fix
12 issues found · 4 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 meta description
SEOAdd a ~150-character meta description to control your search-result snippet and lift click-through rate.
Over half of images are missing alt text
AccessibilityAdd alt attributes to images — screen readers depend on them, and they help image SEO.
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.
+6 more issues — details in the sections below.
SEO
6 issue(s) found
Performance
7 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Score history
+1 overall since Jul 26, 2026
- Overall
- 73
- SEO
- 60
- Security
- 65
- Performance
- 100
- Accessibility
- 70
Organization
Company details published in this site's own structured data.
Contact
Email, phone, and address published on this site's own pages.
Source: https://d2l.ai/contact
Meta tags
- Title
- Dive into Deep Learning — Dive into Deep Learning 1.0.3 documentation
- Description
- Canonical
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1, shrink-to-fit=no
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- AWS
- CDN provider
- CloudFront
- IP address
- 13.227.249.81
- ASN
- AS16509 (AMAZON-02 - Amazon.com, Inc., US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA | — |
| MX | — |
| TXT | — |
| NS |
|
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Amazon
- Subject
- d2l.ai
- Valid from
- May 2, 2026
- Valid to
- Nov 15, 2026
- Days until expiry
- 100
- SAN domains
- d2l.ai, *.d2l.ai
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: none · 0 cookie(s) observed
Content & assets
Headings
H1 1 · H2 9 · H3 19
Links
204 internal · 33 external · 1 broken
Images
38 total · 34 missing alt
Scripts / Styles
14 scripts · 7 stylesheets
JS / CSS size
351 KB · 73.4 KB
Page size
184 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Title longer than 60 characters
- Missing meta description
- Missing canonical link
- No structured data (JSON-LD) found
- Missing OpenGraph tags
- sitemap.xml not found
Accessibility issues
- Over half of images are missing alt text
Careers
This company has an active careers page, but individual openings weren't reliably parsed from it — visit the page above for current listings.
Scan details
- Requested URL
- https://d2l.ai
- Final URL
- https://d2l.ai
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 4 ms
- HTML size
- 184 KB
- Redirect chain
- https://d2l.ai
See something wrong on this report? Request a correction
Related websites
Same technology stack
criticalmention.com
Critical Mention by Onclusive
denhaag.nl
Gemeente Den Haag
bazaart.com
AI design tools for small businesses | Bazaart
complyadvantage.com
ComplyAdvantage | AI-driven fraud & AML risk detection
datcom.com.au
Datcom Cloud: Managed IT & Cybersecurity Services Sydney
elogic.it
Dinova - Innovazione Digitale Per le Aziende
Same hosting provider
gambitco.io
Gambit · We put AI to work
clubhouseinn.com
Welcome To ClubHouse | ClubHouse Hotel & Suites
ashbyprd.com
All-in-one Recruiting Software for Ambitious Teams | Ashby
mailroute.net
MailRoute — Cloud Email Security & Threat Protection
relive.com
Relive | Run, Ride, Hike & more
cyware.com
Cyware - AI-Powered Threat Intelligence Platform | Home
Frequently asked questions
- What technology does d2l.ai use?
- d2l.ai is built with jQuery, Google Analytics.
- Is d2l.ai secure (HTTPS)?
- Yes. d2l.ai uses TLS 1.3 with a certificate issued by Amazon, valid until Nov 15, 2026.
- Who hosts d2l.ai?
- d2l.ai is hosted on AWS, behind CloudFront CDN.
- What is d2l.ai's SEO score?
- d2l.ai scored 60/100 for SEO in the latest analysis (fair).
- What is d2l.ai's overall website score?
- d2l.ai has an overall SiteGraph score of 73/100, combining SEO, performance, security, and accessibility.
- Has d2l.ai's score changed over time?
- d2l.ai's overall score has improved by 1 point (from 72 to 73) since Jul 26, 2026.
- Is d2l.ai hiring?
- d2l.ai has a careers page; check it directly for current openings.
OpenGraph & Twitter Card
OpenGraph
Twitter Card