jestjs.io
Jest · 🃏 Delightful JavaScript Testing
Last scanned Aug 5, 2026, 11:00 PM · 9 views
Overall score
Fair
Summary
This website uses Google Analytics hosted on Cloudflare behind Cloudflare CDN. SEO is fair (65/100) and accessibility is good (75/100). Security scores good (75/100) and performance excellent (100/100). Top issue: Missing meta description.
- United States
- Hosted on Cloudflare
Top issues to fix
9 issues found · 3 high priority
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.
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 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.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
+3 more issues — details in the sections below.
SEO
4 issue(s) found
Performance
197 ms
Security
HTTPS & header checks
Accessibility
2 issue(s) found
Score history
+1 overall since Jul 26, 2026
- Overall
- 78
- SEO
- 65
- Security
- 75
- Performance
- 100
- Accessibility
- 75
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://jestjs.io/help
Meta tags
- Title
- Jest · 🃏 Delightful JavaScript Testing
- Description
- Canonical
- https://jestjs.io/
- Language
- en
- Charset
- UTF-8
- Viewport
- width=device-width, initial-scale=1.0
- Robots meta
- Manifest
- https://jestjs.io/manifest.json
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- Cloudflare
- CDN provider
- Cloudflare
- IP address
- 104.18.21.144
- ASN
- AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX |
|
| TXT |
|
| NS |
|
| CAA | — |
| CNAME | — |
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Google Trust Services
- Subject
- jestjs.io
- Valid from
- Jun 30, 2026
- Valid to
- Sep 28, 2026
- Days until expiry
- 53
- SAN domains
- jestjs.io, *.jestjs.io
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 0 · H2 12 · H3 2
Links
21 internal · 52 external · 1 broken
Images
15 total · 4 missing alt
Scripts / Styles
7 scripts · 1 stylesheets
JS / CSS size
889 B · 0 B
Page size
39.8 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Found
- URLs in sitemap
- 180
SEO issues
- Missing meta description
- No H1 heading found
- No structured data (JSON-LD) found
- robots.txt not found
Accessibility issues
- More than 20% of images are missing alt text
- No H1 heading found
Scan details
- Requested URL
- https://jestjs.io
- Final URL
- https://jestjs.io
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 197 ms
- HTML size
- 39.8 KB
- Redirect chain
- https://jestjs.io
See something wrong on this report? Request a correction
Related websites
Same technology stack
atlan.com
Atlan - The Context Layer for AI
activtrak.com
ActivTrak Work Intelligence for Productivity Optimization
1001spiele.de
1001 Spiele - Kostenlose coole online Spiele spielen!
ashbyprd.com
All-in-one Recruiting Software for Ambitious Teams | Ashby
1001jeux.fr
1001 Jeux - Jouer aux meilleurs Jeux Gratuits en ligne!
avinor.no
Avinor – Flyplasser, reiseinformasjon og tjenester i Norge
Same hosting provider
karinderya.org
Karinderya Wiki & Guides — Codes, Workers & Updates
logiclinkrepair.com
Logic Link Repair | PC, Mac & Phone Repair in Kalispell, MT
herodash.ai
AI Customer Service Platform for Global Teams | HeroDash
emplifyhealth.org
Emplify Health | A Little Empathy Changes Everything
nudeclap.com
Naked Girls Porn: Free HD Nude Sex Videos
rbj.net
Rochester Business Journal
Frequently asked questions
- What technology does jestjs.io use?
- jestjs.io is built with Google Analytics.
- Is jestjs.io secure (HTTPS)?
- Yes. jestjs.io uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Sep 28, 2026.
- Who hosts jestjs.io?
- jestjs.io is hosted on Cloudflare, behind Cloudflare CDN.
- What is jestjs.io's SEO score?
- jestjs.io scored 65/100 for SEO in the latest analysis (fair).
- What is jestjs.io's overall website score?
- jestjs.io has an overall SiteGraph score of 78/100, combining SEO, performance, security, and accessibility.
- Has jestjs.io's score changed over time?
- jestjs.io's overall score has improved by 1 point (from 77 to 78) since Jul 26, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card