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vio.com

https://vio.com· First analyzed 16 May 2026· Updated 16 May 2026
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vio.com
Desktop screenshot of vio.com
Mobile screenshot of vio.com
Mobile

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Hosting Provider

Amazon Web Services (AWS)
aws.amazon.com

IP Address

63.33.246.146

Site Location

🇳🇱 Amsterdam, Netherlandsvia schema_nap

Server Location

🇮🇪 Dublin, Ireland

ASN

AS16509

Organization

AWS EC2 (eu-west-1)

Server

CloudFront

CDN

CloudFront

Nameservers

ns-220.awsdns-27.com.ns-842.awsdns-41.net.ns-1389.awsdns-45.org.ns-1898.awsdns-45.co.uk.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
420 ms10%
Speed Index
546 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
2.1 MB
249 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Hybrid
⚙️ SSR
Frontend
Framework
Next.js
CMS
Medium
Infrastructure
Platform
AWS CloudFront
CDN
CloudFront

Technology Stack

11 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
FullStory

CSS Frameworks

2
Bootstrap
Tailwind CSS

Advertising

2
TikTok PixelMicrosoft Advertising

Meta Frameworks

1
Next.js

Tag Managers

1
Google Tag Manager

Reviews

1
Trustpilot

CDN

1
Amazon CloudFront

SEO Analysis

C68/100
21
6
1
Meta Tags9/15
Content6/12
Headings6/8
Technical23/25
E-E-A-T2/7
Images5/7
Links2/5
URL5/5
Social3/5
Freshness0/4
Mobile4/4
Indexability3/3
V
vio.comvio.com

Vio | Book like an insider | Clear comparison, no hidden fees, real...

Book the right hotel at the best price. Find unbelievable deals on hotels, all in one place. Save your money & time with Vio.

Title truncated.
Title Length79 chars

Recommended: 50-60 chars (~459px / 580px)

Description Length125 chars

Recommended: 120-160 chars

Issues (1)

  • • Title is too long (79 chars, ~459px). Will be truncated in search results.

7 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

3 URLs

3 sub-sitemaps

robots.txt

47 rules

Sitemap reference found

Local SEO

Local Search Readiness

25/100
Needs Work
7 13

Sponsored

AI & LLM Readiness

D52/100
Bot Access
20/25
Machine Read.
11/25
Schema Data
8/25
Citation
13/25

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.txtinvalid
llms-full.txt
Semantic HTML
Heading Hierarchy
Text ratio:1%
Words:383
Token eff.:Optimal

Structured Data

2 JSON-LD
Person×1.3Organization×1.1WebSite
sameAs entity links

Citation Readiness

Opening Summary22w
Descriptive Headingsavg 5w
Canonical URL
Open Graph3/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (11)
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.
B
74/100
11
Passed
5
Critical
0
Warnings
Images & Alt Text
15/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
14/20
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
7/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
8/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
2 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.
55/100
D
217 mg
CO₂e / view
2.1 MB
Page Weight
50%
Cleaner Than
New Visitor
248 mg
vs
Returning (cached)
124 mg
Annual (10K/mo)
26.0 kg
Emission Segments
Data Center
11 mg
Network
64 mg
Device
142 mg
Resource Breakdown
JavaScript
1.5 MB
Images
343.5 KB
CSS
192.7 KB
HTML
66.0 KB
Other
2.0 KB
Green Hosting Verified
Amazon Web Services (AWS)
Provider Match
4 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
A

Security Score

81%Very Good
Interactive

HTTPS

No WAF

184d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Amazon

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

03.05.2026

Valid Until

16.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (7)

*.eu.daedalus.fih.io*.goseek.com*.vio.comdealbase.com*.etrip.net*.dealbase.comgoseek.com

SHA-256 Fingerprint

CB:71:55:97:6D:8C:47:09:05:AD:59:F7:BD:54:87:F6:31:5A:5A:AA...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

age
25155
cache-control
🟡 0s(max-age=0, s-maxage=300, stale-while-revalidate=86400)
content-encoding
📦 Gzip(gzip)
content-security-policy
frame-ancestors 'self'; report-uri https://o28929.ingest.us....
content-type
text/html; charset=utf-8
date
Fri, 15 May 2026 18:40:08 GMT
Good Warning Issue

Email Infrastructure

Google Workspace

Score

93

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (5)

alt1.aspmx.l.google.com
aspmx.l.google.com
alt2.aspmx.l.google.com
alt4.aspmx.l.google.com

+1 more

Domain Information

vio.com

Domain Age
28y 2m

Created

18.03.1998

Expires

17.03.2031

Last Updated

02.12.2022

Registrar

Amazon Registrar, Inc.

DNSSEC
Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner
Cookiebot
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: Cookiebot
Privacy policy page linked
Data Protection Officer mentioned

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.
B
73/100
Mobile Friendly82 breakpoints
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, shrink-to-fit=no
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Campton

WCAG AA
73/100
Readability
/30
24/30

20px · LH 1.40

Hierarchy
/20
17/20

2.8x ratio

WCAG
/25
21/25

6.36:1 min contrast

Performance
/25
11/25

1 font · 4 req

Heading Font

Campton

Sans56px

Body Font

Campton

Sans20px

Contrast Ratio

6.36:1

WCAG AA (≥4.5:1)

Reading Comfort

~33 CPL

Narrow lines
56px
h1
24px
h2
20px
h3
20px
p

✅ Excellent readability: 20px body text is ideal for all devices.

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

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 6.4:1).

⚠️ Minor heading issue: 0 level skip(s) detected. Maintain sequential order for screen readers.

✅ Strong hierarchy: Headlines are 2.8x larger than body text.

✅ Lean font stack: 1 font families keeps load times fast.

Buy on MyFontsFlesch 54

Color Palette

6 unique colors
Dark
#6d6c6a
Other· 55.3%
#4f436b
Secondary· 18%
#fdf9f6
Primary· 14%
#372d3e
Secondary· 8.6%
#e2ddda
Border· 2.6%
#404a57
Secondary· 1.6%

Business & Marketing Stack

6 Tools Detected

Enterprise

Behavior Analytics

3
Google Tag ManagerFree
FullStoryEnterprise
Google AnalyticsFree

User behavior and product analytics

Advertising

1
TikTok PixelMid-Market

Ad platforms and retargeting pixels

Privacy & Cookies

1
OsanoMid-Market

Cookie consent and privacy compliance tools

Reviews & Social Proof

1
TrustpilotMid-Market

Customer reviews and testimonials

4

Categories

6

Total Tools

1

Enterprise

3

Mid-Market

Assessment: Sophisticated marketing and sales technology infrastructure

Sponsored

Scripts & Styles

24 Resources

20
Scripts
4
Styles
7
Async
13
Defer

Top Script Sources

local(12)analytics.tiktok.com(3)edge.fullstory.com(2)googletagmanager.com(1)cmp.osano.com(1)

Website Identity

Vio.com

Vio.com

Organization

Vio.com is a Dutch-founded travel website and app that has served value-seeking travelers since 2016. With over 100 million users annually, Vio.com helps travelers find better value on every stay. Offering savings of up to 45% on accommodations worldwide, it caters to a variety of preferences, from

partners@vio.com
www.vio.com
28 years old

Nieuwe Looiersdwarsstraat 17, Amsterdam

1017 TZ, Amsterdam, Noord-Holland

NL

Location detected: 🇳🇱 Netherlands, Amsterdamvia schema_nap
Amazon Registrar, Inc.📧 Google Workspaceen-GBEst. 2016

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Last analyzed: 16 May 2026 at 01:39

Historical Analysis & Change Tracking