24symbols.com
24symbols - Access a world of books
Last scanned Aug 24, 2026, 1:23 PM
Overall score
Great
Summary
24symbols é um serviço para ler livros digitais na internet baseado num modelo de assinatura. This website uses Nginx behind CloudFront CDN. SEO is fair (70/100) and accessibility is excellent (100/100). Security scores excellent (90/100) and performance excellent (100/100). Top issue: Missing canonical link.
24symbols é um serviço para ler livros digitais na internet baseado num modelo de assinatura.
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.
TLS certificate expires in 29 days
SecurityRenew soon or enable auto-renewal to avoid a browser-warning outage.
2 cookies 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.
+3 more issues — details in the sections below.
SEO
5 issue(s) found
Performance
552 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Organization
Company details published in this site's own structured data.
24symbols é um serviço para ler livros digitais na internet baseado num modelo de assinatura.
Contact
Email, phone, and address published on this site's own pages.
Meta tags
- Title
- 24symbols - Access a world of books
- Description
- 24symbols é um serviço para ler livros digitais na internet baseado num modelo de assinatura.
- Canonical
- Language
- pt
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1.0, user-scalable=0, minimum-scale=1.0, maximum-scale=1.0
- Robots meta
- NOODP
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- CloudFront
- 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
- DigiCert Inc
- Subject
- *.24symbols.com
- Valid from
- Sep 24, 2025
- Valid to
- Sep 23, 2026
- Days until expiry
- 29
- SAN domains
- *.24symbols.com, 24symbols.com
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: none · 3 cookie(s) observed
Content & assets
Headings
H1 9 · H2 3 · H3 3
Links
91 internal · 7 external · 2 broken
Images
74 total · 0 missing alt
Scripts / Styles
34 scripts · 2 stylesheets
JS / CSS size
8.6 KB · 5.3 KB
Page size
56.7 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Missing canonical link
- Multiple H1 headings found
- 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://24symbols.com
- Final URL
- https://www.24symbols.com/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 551 ms
- HTML size
- 56.7 KB
- Redirect chain
- https://24symbols.com → https://www.24symbols.com/
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does 24symbols.com use?
- 24symbols.com is built with Ruby on Rails, Google Analytics, Meta Pixel, Nginx.
- Is 24symbols.com secure (HTTPS)?
- Yes. 24symbols.com uses TLS 1.3 with a certificate issued by DigiCert Inc, valid until Sep 23, 2026.
- Who hosts 24symbols.com?
- Hosting provider information for 24symbols.com is not available yet.
- What is 24symbols.com's SEO score?
- 24symbols.com scored 70/100 for SEO in the latest analysis (fair).
- What is 24symbols.com's overall website score?
- 24symbols.com has an overall SiteGraph score of 89/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card