diffen.com
Diffen - Compare Anything. Diffen. Discern. Decide.
Last scanned Jul 26, 2026, 5:47 AM · 9 views
Overall score
Great
Summary
Compare anything to find similarities and differences. This website uses Nginx hosted on Fastly behind Fastly CDN. SEO is good (75/100) and accessibility is good (85/100). Security scores excellent (90/100) and performance excellent (90/100). Top issue: Meta description longer than 160 characters.
Compare anything to find similarities and differences. Diffen is the largest collection of unbiased comparisons in the world. Read, improve or create comparisons.
- United States
- Hosted on Fastly
Top issues to fix
6 issues found · 3 high priority
Missing Strict-Transport-Security header
SecurityAdd HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
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.
Missing viewport meta tag
AccessibilityAdd <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.
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.
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.
SEO
3 issue(s) found
Performance
1.00 s
Security
HTTPS & header checks
Accessibility
2 issue(s) found
Organization
Company details published in this site's own structured data.
Compare anything to find similarities and differences. Diffen is the largest collection of unbiased comparisons in the world. Read, improve or create comparisons.
Meta tags
- Title
- Diffen - Compare Anything. Diffen. Discern. Decide.
- Description
- Compare anything to find similarities and differences. Diffen is the largest collection of unbiased comparisons in the world. Read, improve or create comparisons.
- Canonical
- https://www.diffen.com
- Language
- en
- Charset
- UTF-8
- Viewport
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
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
- www.diffen.com
- Valid from
- Jun 2, 2026
- Valid to
- Aug 31, 2026
- Days until expiry
- 33
- SAN domains
- www.diffen.com
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyEnabled
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 1 cookie(s) observed
Content & assets
Headings
H1 0 · H2 1 · H3 1
Links
47 internal · 3 external · 0 broken
Images
22 total · 0 missing alt
Scripts / Styles
3 scripts · 0 stylesheets
JS / CSS size
880 B · 4.3 KB
Page size
17.3 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 66
- sitemap.xml
- Found
- URLs in sitemap
- -1
SEO issues
- Meta description longer than 160 characters
- No H1 heading found
- No structured data (JSON-LD) found
Accessibility issues
- No H1 heading found
- Missing viewport meta tag
Scan details
- Requested URL
- https://diffen.com
- Final URL
- https://www.diffen.com/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 1.00 s
- HTML size
- 17.3 KB
- Redirect chain
- https://diffen.com → https://www.diffen.com/
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does diffen.com use?
- diffen.com is built with Google Analytics, Nginx.
- Is diffen.com secure (HTTPS)?
- Yes. diffen.com uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Aug 31, 2026.
- Who hosts diffen.com?
- diffen.com is hosted on Fastly, behind Fastly CDN.
- What is diffen.com's SEO score?
- diffen.com scored 75/100 for SEO in the latest analysis (fair).
- What is diffen.com's overall website score?
- diffen.com has an overall SiteGraph score of 85/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card