df.com
Diamond Foundry - The Diamond Shaping the Future
Last scanned Jul 29, 2026, 11:00 PM · 12 views
Overall score
Excellent
Summary
Innovating at the very foundation of technology with the ultimate new tech component that can do so: single-crystal diamond wafers. This website uses jQuery behind Cloudflare CDN. SEO is good (80/100) and accessibility is excellent (100/100). Security scores excellent (95/100) and performance excellent (100/100). Top issue: No structured data (JSON-LD) found.
Innovating at the very foundation of technology with the ultimate new tech component that can do so: single-crystal diamond wafers.
Top issues to fix
5 issues found
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.
17 broken links on the page
SEOFix or remove broken links — they waste crawl budget and erode user trust.
SEO
3 issue(s) found
Performance
681 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Score history
0 overall since Jul 22, 2026
- Overall
- 93
- SEO
- 80
- Security
- 95
- Performance
- 100
- Accessibility
- 100
Organization
Company details published in this site's own structured data.
Innovating at the very foundation of technology with the ultimate new tech component that can do so: single-crystal diamond wafers.
Meta tags
- Title
- Diamond Foundry - The Diamond Shaping the Future
- Description
- Innovating at the very foundation of technology with the ultimate new tech component that can do so: single-crystal diamond wafers.
- Canonical
- https://www.df.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.df.com
- Valid from
- Jul 4, 2026
- Valid to
- Oct 2, 2026
- Days until expiry
- 64
- SAN domains
- www.df.com
Security headers
- Strict-Transport-SecurityEnabled
- 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 6 · H3 6
Links
16 internal · 1 external · 17 broken
Images
9 total · 0 missing alt
Scripts / Styles
8 scripts · 1 stylesheets
JS / CSS size
961 B · 6.0 KB
Page size
56.5 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://df.com
- Final URL
- https://www.df.com/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 680 ms
- HTML size
- 56.5 KB
- Redirect chain
- https://df.com → https://www.df.com/
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does df.com use?
- df.com is built with jQuery.
- Is df.com secure (HTTPS)?
- Yes. df.com uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Oct 2, 2026.
- Who hosts df.com?
- Hosting provider information for df.com is not available yet.
- What is df.com's SEO score?
- df.com scored 80/100 for SEO in the latest analysis (great).
- What is df.com's overall website score?
- df.com has an overall SiteGraph score of 93/100, combining SEO, performance, security, and accessibility.
- Has df.com's score changed over time?
- df.com's overall score has stayed steady at 93/100 since Jul 22, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card