sinonjs.org
Sinon.JS | SinonJS
Last scanned Aug 6, 2026, 1:00 AM · 11 views
Overall score
Great
Summary
A library for stubbing, spying, and mocking in JavaScript tests. This website uses Vue.js hosted on Fastly behind Fastly CDN. SEO is fair (70/100) and accessibility is excellent (90/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Missing canonical link.
A library for stubbing, spying, and mocking in JavaScript tests. Works with any unit testing framework.
- United States
- Hosted on Fastly
Top issues to fix
8 issues found · 3 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.
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.
Missing canonical link
SEOAdd <link rel="canonical"> so search engines know which URL variant to index.
+2 more issues — details in the sections below.
SEO
4 issue(s) found
Performance
212 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Score history
+3 overall since Jul 26, 2026
- Overall
- 80
- SEO
- 70
- Security
- 65
- Performance
- 100
- Accessibility
- 90
Organization
Company details published in this site's own structured data.
A library for stubbing, spying, and mocking in JavaScript tests. Works with any unit testing framework.
Meta tags
- Title
- Sinon.JS | SinonJS
- Description
- A library for stubbing, spying, and mocking in JavaScript tests. Works with any unit testing framework.
- Canonical
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width,initial-scale=1
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX |
|
| TXT | — |
| NS |
|
| CAA | — |
| CNAME | — |
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Let's Encrypt
- Subject
- sinonjs.org
- Valid from
- Jun 23, 2026
- Valid to
- Sep 21, 2026
- Days until expiry
- 46
- SAN domains
- sinonjs.org, www.sinonjs.org
Security headers
- Strict-Transport-SecurityMissing
- 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 2 · H3 0
Links
17 internal · 1 external · 0 broken
Images
2 total · 0 missing alt
Scripts / Styles
4 scripts · 2 stylesheets
JS / CSS size
32.2 KB · 93.3 KB
Page size
49.0 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 0
- sitemap.xml
- Found
- URLs in sitemap
- 239
SEO issues
- Missing canonical link
- No H1 heading found
- No structured data (JSON-LD) found
- Missing OpenGraph tags
Accessibility issues
- No H1 heading found
Scan details
- Requested URL
- https://sinonjs.org
- Final URL
- https://sinonjs.org
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 211 ms
- HTML size
- 49.0 KB
- Redirect chain
- https://sinonjs.org
See something wrong on this report? Request a correction
Related websites
Same technology stack
bond.edu.au
Bond University | Gold Coast, Queensland, Australia
emplifyhealth.org
Emplify Health | A Little Empathy Changes Everything
atlan.com
Atlan - The Context Layer for AI
aha-music.com
What Is This Song? Free Online Song Finder | AHA Music
biorbyt.com
Antibodies, Proteins & Life Science Reagents | Biorbyt
getname.pl
GetName.pl - Giełda Domen Premium | GetName.pl
Same hosting provider
saltoks.com
Salto KS | Salto
fhinck.com
Fhinck — Task Mining + Agentes de IA | AI First
litera.com
Litera | Legal Technology Solutions
vovici.com
Survey Management Software | Verint
dvsa.gov.uk
Driver and Vehicle Standards Agency - GOV.UK
gapseat.in
GapSeat | IRCTC Chart Vacancy & Vacant Train Seats
Frequently asked questions
- What technology does sinonjs.org use?
- sinonjs.org is built with Vue.js.
- Is sinonjs.org secure (HTTPS)?
- Yes. sinonjs.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 21, 2026.
- Who hosts sinonjs.org?
- sinonjs.org is hosted on Fastly, behind Fastly CDN.
- What is sinonjs.org's SEO score?
- sinonjs.org scored 70/100 for SEO in the latest analysis (fair).
- What is sinonjs.org's overall website score?
- sinonjs.org has an overall SiteGraph score of 80/100, combining SEO, performance, security, and accessibility.
- Has sinonjs.org's score changed over time?
- sinonjs.org's overall score has improved by 3 points (from 77 to 80) since Jul 26, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card