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sellerio.it

https://sellerio.it· First analyzed 21 May 2026· Updated 21 May 2026
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sellerio.it
Desktop screenshot of sellerio.it
Mobile screenshot of sellerio.it
Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)
aws.amazon.com

IP Address

63.34.249.67

Site Location

🇮🇹 Italyvia tld

Server Location

🇮🇪 Dublin, Ireland

ASN

AS16509

Organization

AWS EC2 (eu-west-1)

Server

Apache

Nameservers

ns1.register.it.ns2.register.it.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
654 ms10%
Speed Index
850 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
45 KB
74 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Amazon Web Services (AWS)

Technology Stack

7 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

Libraries

1
jQuery UI

UI Components

1
Swiper

CSS Frameworks

1
Tailwind CSS

Tag Managers

1
Google Tag Manager

Web Servers

1
Apache

SEO Analysis

B74/100
21
5
1
Meta Tags14/15
Content11/12
Headings3/8
Technical18/25
E-E-A-T0/7
Images5/7
Links5/5
URL5/5
Social4/5
Freshness2/4
Mobile4/4
Indexability3/3
S
sellerio.itsellerio.it

Sellerio Editore - Catalogo libri ed eBook

Acquista online i libri e gli eBook pubblicati dalla casa editrice Sellerio, scopri i suoi autori, le sue collane e la sua storia

Title Length42 chars

Recommended: 50-60 chars (~242px / 580px)

Description Length129 chars

Recommended: 120-160 chars

Issues (1)

  • • Missing H1 tag — every page should have exactly one H1

6 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

6,016 URLs

robots.txt

4 rules

Sitemap reference found

Local SEO

Local Search Readiness

3/100
Poor
1 14 2

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

Sponsored

AI & LLM Readiness

D40/100
Bot Access
20/25
Machine Read.
5/25
Schema Data
0/25
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:14%
Words:13,014
Token eff.:Acceptable
Sections/1K:7.5
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary20w
Descriptive Headingsavg 8.6w
Canonical URL
Open Graph3/3
Twitter Card1/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (9)
AI readiness recommendation preview...
Upgrade to view recommendations

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.
C
64/100
6
Passed
5
Critical
1
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
11/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
10/15
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
7/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
1/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
3 recommendations
  • •Accessibility recommendation preview...
Upgrade to view recommendations

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.
67/100
A+
5 mg
CO₂e / view
44.7 KB
Page Weight
95%
Cleaner Than
New Visitor
5 mg
vs
Returning (cached)
3 mg
Annual (10K/mo)
540 g
Emission Segments
Data Center
<0.001 g
Network
1 mg
Device
3 mg
Resource Breakdown
HTML
44.7 KB
Green Hosting Verified
Amazon Web Services (AWS)
Provider Match
4 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
A

Security Score

86%Very Good
Interactive

HTTPS

No WAF

272d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Amazon

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

19.01.2026

Valid Until

17.02.2027

OCSP Stapling

Enabled

Subject Alternative Names (8)

sellerio.it*.illadrodimerendine.itlavocedelviolino.itilladrodimerendine.it*.sellerio.it*.piccolaguidaairegalidinatale.itpiccolaguidaairegalidinatale.it*.lavocedelviolino.it

SHA-256 Fingerprint

B2:E0:B9:60:D1:A6:8E:BB:62:23:51:ED:2E:16:E6:71:48:26:EC:1A...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

cache-control
🔴 No Cache(no-store, no-cache, must-revalidate, private, no-cache, no-s...)
content-encoding
📦 Gzip(gzip)
content-length
45464
content-security-policy
default-src * data: blob: 'unsafe-eval' 'unsafe-inline'
content-type
text/html; charset=UTF-8
date
Thu, 21 May 2026 16:59:59 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

98

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

mail.register.it

Domain Information

sellerio.it

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Script

Cookie Consent Banner
Cookie Script
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: Cookie Script
Privacy policy page linked

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.
D
53/100
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=1.0, maximum-scale=1.0, user-scalable=no, minimal-ui
4 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Georgia + Helvetica Neue

WCAG Partial
56/100
Readability
/30
16/30

14px · LH 1.79

Hierarchy
/20
8/20
WCAG
/25
16/25

1:1 min contrast

Performance
/25
16/25

System fonts

Heading Font

Georgia

Serif

Body Font

Helvetica Neue

Sans14px

Contrast Ratio

1:1

13 issues

Reading Comfort

~35 CPL

Narrow lines
27px
h2
25px
h3
14px
p

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

❌ Very complex text: Flesch score 0/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 13 elements below WCAG AA threshold (min 1.0:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

✅ System fonts: Zero font loading delay — best possible LCP impact.

Buy on MyFontsFlesch 0

Color Palette

6 unique colors
3.54:1 AA Large Light
#888888
Other· 30.2%
#ffffff
Background· 20.8%
#23314b
Primary· 0%
#1d232e
Secondary· 12.9%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

1

Categories

2

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

Ad Networks

Media.net

Sponsored

Scripts & Styles

13 Resources

8
Scripts
5
Styles
3
Async
0
Defer

Top Script Sources

storage1010.cdn-immedia.net(3)googletagmanager.com(2)cdn.cookie-script.com(1)assets.juicer.io(1)code.jquery.com(1)

Website Identity

sellerio.it

Location detected: 🇮🇹 Italyvia tld
it

Sponsored

Last analyzed: 21 May 2026 at 17:00

Historical Analysis & Change Tracking