jsfiddle.net
JSFiddle - React, Tailwind, and code Playground
Last scanned Jul 22, 2026, 5:57 PM · 1 view
Overall score
Great
Summary
JSFiddle - Test your React, Tailwind, JavaScript, CSS, HTML online with JSFiddle. This website uses Cloudflare Analytics hosted on Cloudflare behind Cloudflare CDN. SEO is fair (70/100) and accessibility is excellent (90/100). Security scores excellent (90/100) and performance excellent (90/100). Top issue: Missing canonical link.
JSFiddle - Test your React, Tailwind, JavaScript, CSS, HTML online with JSFiddle.
- United States
- Hosted on Cloudflare
Top issues to fix
9 issues found · 1 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
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.
Missing canonical link
SEOAdd <link rel="canonical"> so search engines know which URL variant to index.
Multiple H1 headings found
SEOKeep a single H1 per page and demote the others to H2/H3.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
Missing OpenGraph tags
SEOAdd og:title/og:description/og:image so shared links render a proper preview card.
+3 more issues — details in the sections below.
SEO
5 issue(s) found
Performance
357 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Organization
Company details published in this site's own structured data.
JSFiddle - Test your React, Tailwind, JavaScript, CSS, HTML online with JSFiddle.
Meta tags
- Title
- JSFiddle - React, Tailwind, and code Playground
- Description
- JSFiddle - Test your React, Tailwind, JavaScript, CSS, HTML online with JSFiddle.
- Canonical
- Language
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1, maximum-scale=1
- Robots meta
- index, follow
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- Cloudflare
- CDN provider
- Cloudflare
- IP address
- 104.21.49.15
- 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
- jsfiddle.net
- Valid from
- May 27, 2026
- Valid to
- Aug 25, 2026
- Days until expiry
- 33
- SAN domains
- jsfiddle.net, *.jsfiddle.net
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyEnabled
- Permissions-PolicyMissing
Compression: gzip · 2 cookie(s) observed
Content & assets
Headings
H1 11 · H2 12 · H3 38
Links
21 internal · 4 external · 1 broken
Images
0 total · 0 missing alt
Scripts / Styles
11 scripts · 4 stylesheets
JS / CSS size
215 KB · 633 KB
Page size
126 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 9
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Missing canonical link
- Multiple H1 headings found
- No structured data (JSON-LD) found
- Missing OpenGraph tags
- sitemap.xml not found
Accessibility issues
- Missing <html lang> attribute
Scan details
- Requested URL
- https://jsfiddle.net
- Final URL
- https://jsfiddle.net
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 355 ms
- HTML size
- 126 KB
- Redirect chain
- https://jsfiddle.net
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does jsfiddle.net use?
- jsfiddle.net is built with Django, Cloudflare Analytics.
- Is jsfiddle.net secure (HTTPS)?
- Yes. jsfiddle.net uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Aug 25, 2026.
- Who hosts jsfiddle.net?
- jsfiddle.net is hosted on Cloudflare, behind Cloudflare CDN.
- What is jsfiddle.net's SEO score?
- jsfiddle.net scored 70/100 for SEO in the latest analysis (fair).
- What is jsfiddle.net's overall website score?
- jsfiddle.net has an overall SiteGraph score of 84/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card