cello.so

https://cello.so· First analyzed 09 May 2026· Updated 09 May 2026

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cello.so

Mobile

Sponsored

Hosting Provider

OVHcloud

ovhcloud.com

IP Address

151.80.4.219

Site Location

🇫🇷 Francevia ip

Server Location

🇫🇷 Roubaix, France

ASN

AS16276

Organization

OVH GmbH

Server

OVHcloud

Nameservers

ns-1578.awsdns-05.co.uk.ns-250.awsdns-31.com.ns-796.awsdns-35.net.ns-1087.awsdns-07.org.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

577 ms10%

Speed Index

750 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.1 MB

103 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.9.4

cms

Cellov14.01.2026Custom

by kodo.house

Technology Stack

13 Technologies Detected

Plugins

Analytics

CSS Frameworks

Tag Managers

Customer Support

Marketing

Advertising

Languages

SEO Analysis

A87/100

Meta Tags14/15

Content11/12

Headings7/8

Technical24/25

E-E-A-T5/7

Images2/7

Links4/5

URL5/5

Social4/5

Freshness4/4

Mobile4/4

Indexability3/3

cello.socello.so

Cello | User-led growth platform for SaaS

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.

Title Length41 chars

Recommended: 50-60 chars (~248px / 580px)

Description Length136 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (110/141) — critical for accessibility and SEO

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

6 URLs

6 sub-sitemaps

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

18/100

Poor

5 13

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

D54/100

Bot Access

20/25

Machine Read.

11/25

Schema Data

8/25

Citation

15/25

AI Bot Access

14/14 accessible

AI Search

OAI-SearchBot

PerplexityBot

Claude-SearchBot

Gemini-Deep-Research

DuckAssistBot

Training

GPTBot

ClaudeBot

Google-Extended

Meta-ExternalAgent

Bytespiderinfo

Amazonbot

Applebot-Extended

CCBotinfo

Fetch

ChatGPT-User

Machine Readability

llms.txt

llms-full.txt

Semantic HTML

Heading Hierarchy

nav

Text ratio:5%

Words:1,544

Token eff.:Optimal

Sections/1K:1.9

Depth:1/5

Structured Data

5 JSON-LD

Organization×1.1WebSiteBreadcrumbListSearchAction

sameAs entity links

Citation Readiness

Opening Summary10w

Descriptive Headingsavg 5.2w

Canonical URL

Open Graph3/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (8)

AI readiness recommendation preview...

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Sponsored

Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.

85/100

Passed

Critical

Warnings

Images & Alt Text

20/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

17/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

15/15

Verifies form fields have labels, error messages are clear, and inputs are properly associated.

Color & Contrast

15/15

Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.

Keyboard & Focus

11/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

7/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

1 recommendation

•Accessibility recommendation preview...

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Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.

61/100

112 mg

CO₂e / view

1.1 MB

Page Weight

70%

Cleaner Than

New Visitor

128 mg

Returning (cached)

64 mg

Annual (10K/mo)

13.4 kg

Emission Segments

Data Center

6 mg

Network

33 mg

Device

73 mg

Resource Breakdown

JavaScript

166.9 KB

Images

672.3 KB

CSS

144.8 KB

HTML

26.2 KB

Other

96.1 KB

Green Hosting Verified

OVHcloud

GWF Verified

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

71%Good

Static / Informational

HTTPS

No WAF

51d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

01.04.2026

Valid Until

30.06.2026

Subject Alternative Names (1)

cello.so

SHA-256 Fingerprint

ED:CB:B7:B2:7B:5C:9F:CF:45:5C:F0:53:92:A8:B2:01:A3:28:4A:CE...

Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

none

cache-control

🟡 3s(max-age=3, must-revalidate, max-age=604800)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=UTF-8

date

Sat, 09 May 2026 13:04:54 GMT

expires

Sat, 16 May 2026 13:05:04 GMT

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (6)

3q7y2l624d4xxrh6olpbimu4ligztxs772qf2jetps6r3arwjoqa.mx-verification.google.com

alt4.aspmx.l.google.com

alt1.aspmx.l.google.com

alt3.aspmx.l.google.com

+2 more

Domain Information

cello.so

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.

75/100

Mobile Friendly1 breakpoint

Viewport Meta

The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.

Responsive Design

Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.

Touch Icons

Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.

Readable Font Size

Base font size should be at least 16px on mobile to ensure text is readable without zooming.

Relative Units

Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.

No H-Scroll Risk

No elements wider than the viewport that would cause horizontal scrolling on mobile devices.

Tap Targets OK

Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.

No Fixed Widths

No elements with fixed pixel widths that could overflow on smaller screens and break the layout.

Viewport

width=device-width, initial-scale=1, maximum-scale=5.0

1 recommendation

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

PolySans-Neutral

WCAG Partial

63/100

Readability

/30

21/30

16px · LH 1.40

Hierarchy

/20

7/20

1.25x ratio

WCAG

/25

15/25

1.35:1 min contrast

Performance

/25

20/25

2 fonts · 3 req

Heading Font

PolySans-Neutral

Sans20px

Body Font

PolySans-Neutral

Sans16px

Contrast Ratio

1.35:1

5 issues

Reading Comfort

~44 CPL

Narrow lines

20px

40px

16px

Major Second

Scale

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Optimal line spacing: 1.40 ratio (ideal range 1.4–1.6).

⚠️ Hard to read: Flesch score 38/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 5 elements below WCAG AA threshold (min 1.4:1).

⚠️ Minor heading issue: 1 level skip(s) detected. Maintain sequential order for screen readers.

⚠️ Weak hierarchy: Headlines should be ≥2x body size for clear visual structure.

Buy on MyFontsFluid TypeFlesch 38

Color Palette

8 unique colors

15.72:1 AAA Light

#ffffff

Primary· 78.00000000000001%

#232323

Other· 4.3%

#f06c51

Accent· 5.5%

#e8e2f6

Accent· 4%

#a6869e

Secondary· 2.8%

#d6c8e0

Secondary· 2.5%

#b3aecb

Secondary· 2.5%

#af5d88

Secondary· 0.3%

Business & Marketing Stack

7 Tools Detected

Enterprise

CRM Systems

HubSpotMid-Market

Customer Relationship Management platforms

Customer Support

IntercomMid-Market

Live chat and helpdesk tools

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

CookieYesSMB

CookiebotMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

25 Resources

Scripts

Styles

Async

Defer

Top Script Sources

cello.so(4)cdn-cookieyes.com(3)googletagmanager.com(3)widget.intercom.io(1)eu-assets.i.posthog.com(1)

Website Identity

Cello

Organization

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.

support@cello.so

cello.so/

Location detected: 🇫🇷 Francevia ip

📧 Google Workspaceen

Social Profiles

Facebook X (Twitter)LinkedIn

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Last analyzed: 09 May 2026 at 13:05

Historical Analysis & Change Tracking