cso.org
Chicago Symphony Orchestra
Last scanned Aug 24, 2026, 1:22 PM · 1 view
Overall score
Great
Summary
Official website: In collaboration with the best conductors and guest artists on the international music scene, the Chicago Symphony Orchestra performs well over one hundred concerts each year at its downtown home, Symph… This website uses Google Analytics. SEO is good (85/100) and accessibility is excellent (100/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Meta description longer than 160 characters.
Official website: In collaboration with the best conductors and guest artists on the international music scene, the Chicago Symphony Orchestra performs well over one hundred concerts each year at its downtown home, Symphony Center and at the Ravinia Festival on Chicago’s North Shore.
Top issues to fix
7 issues found · 2 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.
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.
Meta description longer than 160 characters
SEOTrim the meta description to under 160 characters to avoid truncation in search results.
robots.txt not found
SEOPublish /robots.txt with a Sitemap: directive to guide crawlers.
+1 more issue — details in the sections below.
SEO
3 issue(s) found
Performance
212 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Organization
Company details published in this site's own structured data.
Official website: In collaboration with the best conductors and guest artists on the international music scene, the Chicago Symphony Orchestra performs well over one hundred concerts each year at its downtown home, Symphony Center and at the Ravinia Festival on Chicago’s North Shore.
Contact
Email, phone, and address published on this site's own pages.
- Phone
- 312-294-3000
Meta tags
- Title
- Chicago Symphony Orchestra
- Description
- Official website: In collaboration with the best conductors and guest artists on the international music scene, the Chicago Symphony Orchestra performs well over one hundred concerts each year at its downtown home, Symphony Center and at the Ravinia Festival on Chicago’s North Shore.
- Canonical
- https://cso.org/
- Language
- en-us
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- —
- 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
- cso.org
- Valid from
- Jun 16, 2026
- Valid to
- Dec 16, 2026
- Days until expiry
- 113
- SAN domains
- cso.org
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: none · 1 cookie(s) observed
Content & assets
Headings
H1 1 · H2 1 · H3 0
Links
153 internal · 11 external · 0 broken
Images
21 total · 0 missing alt
Scripts / Styles
33 scripts · 6 stylesheets
JS / CSS size
522 KB · 8.2 KB
Page size
100 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Meta description longer than 160 characters
- robots.txt not found
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://cso.org
- Final URL
- https://cso.org
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 210 ms
- HTML size
- 100 KB
- Redirect chain
- https://cso.org
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Frequently asked questions
- What technology does cso.org use?
- cso.org is built with jQuery, Google Analytics, Google Ads, Meta Pixel.
- Is cso.org secure (HTTPS)?
- Yes. cso.org uses TLS 1.3 with a certificate issued by DigiCert Inc, valid until Dec 16, 2026.
- Who hosts cso.org?
- Hosting provider information for cso.org is not available yet.
- What is cso.org's SEO score?
- cso.org scored 85/100 for SEO in the latest analysis (great).
- What is cso.org's overall website score?
- cso.org has an overall SiteGraph score of 87/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card