cello.so
Cello | User-led growth platform for SaaS
Last scanned Jul 26, 2026, 5:17 AM · 1 view
Overall score
Great
Summary
Turn users into your most valuable growth channel. This website uses WordPress hosted on OVH - OVH SAS, FR. SEO is excellent (100/100) and accessibility is excellent (100/100). Security scores fair (65/100) and performance excellent (90/100).
Turn users into your most valuable growth channel. Cello is the easiest way to add a user referral program to any SaaS product in hours.
- France
- Hosted on OVH - OVH SAS, FR
Products & pricing
Product and pricing information published in this site's own structured data.
All referrals, one platform.
$50 USD
Top issues to fix
4 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.
SEO
0 issue(s) found
Performance
125 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Organization
Company details published in this site's own structured data.
Turn users into your most valuable growth channel. Cello is the easiest way to add a user referral program to any SaaS product in hours.
Contact
Email, phone, and address published on this site's own pages.
- support@cello.so
Meta tags
- Title
- Cello | User-led growth platform for SaaS
- Description
- Turn users into your most valuable growth channel. Cello is the easiest way to add a user referral program to any SaaS product in hours.
- Canonical
- https://cello.so/
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1, maximum-scale=5.0
- Robots meta
- index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- OVH - OVH SAS, FR
- CDN provider
- —
- IP address
- 151.80.4.219
- ASN
- AS16276 (OVH - OVH SAS, FR)
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
- cello.so
- Valid from
- Jun 11, 2026
- Valid to
- Sep 9, 2026
- Days until expiry
- 44
- SAN domains
- cello.so
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 1 · H2 13 · H3 1
Links
52 internal · 9 external · 0 broken
Images
161 total · 0 missing alt
Scripts / Styles
44 scripts · 5 stylesheets
JS / CSS size
308 KB · 331 KB
Page size
155 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 0
- sitemap.xml
- Found
- URLs in sitemap
- -1
SEO issues
No SEO issues detected.
Accessibility issues
No accessibility issues detected.
Careers
This company has an active careers page, but individual openings weren't reliably parsed from it — visit the page above for current listings.
Scan details
- Requested URL
- https://cello.so
- Final URL
- https://cello.so
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 122 ms
- HTML size
- 155 KB
- Redirect chain
- https://cello.so
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does cello.so use?
- cello.so is built with PHP, WordPress, Google Analytics, Google Ads, Apache.
- Is cello.so secure (HTTPS)?
- Yes. cello.so uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 9, 2026.
- Who hosts cello.so?
- cello.so is hosted on OVH - OVH SAS, FR.
- What is cello.so's SEO score?
- cello.so scored 100/100 for SEO in the latest analysis (excellent).
- What is cello.so's overall website score?
- cello.so has an overall SiteGraph score of 89/100, combining SEO, performance, security, and accessibility.
- What products does cello.so offer?
- cello.so offers All referrals, one platform..
- Is cello.so hiring?
- cello.so has a careers page; check it directly for current openings.
OpenGraph & Twitter Card
OpenGraph
Twitter Card