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ulozto.cz

https://ulozto.cz· First analyzed 09 May 2026· Updated 09 May 2026
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ulozto.cz
Desktop screenshot of ulozto.cz
Mobile screenshot of ulozto.cz
Mobile

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Hosting Provider

Cloudflare
cloudflare.com

IP Address

188.114.97.3

Site Location

🇨🇿 Czech Republicvia tld

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

CloudFlare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

santino.ns.cloudflare.com.bella.ns.cloudflare.com.

Performance

98

Core Web Vitals

Weight

First Contentful Paint
933 ms10%
Speed Index
1.2 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
11 KB
18 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Cloudflare
CDN
Cloudflare

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

6 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

Other

1
Modernizr

CSS Frameworks

1
Tailwind CSS

Tag Managers

1
Google Tag Manager

CDN

1
Cloudflare

SEO Analysis

C63/100
18
5
1
Meta Tags9/15
Content9/12
Headings8/8
Technical18/25
E-E-A-T0/7
Images0/7
Links4/5
URL5/5
Social4/5
Freshness0/4
Mobile3/4
Indexability3/3
U
ulozto.czulozto.cz

Ulož.to Disk - The Personal Backup Service

No description available for this page.

Title Length42 chars

Recommended: 50-60 chars (~249px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

  • • Missing meta description — important for click-through rates in SERPs

6 issues found

Upgrade to view details

Crawlability

Sitemap
robots.txt

40 rules

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.

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AI & LLM Readiness

D45/100
Bot Access
20/25
Machine Read.
13/25
Schema Data
1/25
Citation
11/25

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
navheader/footer
Text ratio:9%
Words:354
Token eff.:Optimal
Sections/1K:14.1
Depth:2/5

Structured Data

Microdata
Article×1.2(min)microdata

Citation Readiness

Opening Summary95w
Descriptive Headingsavg 2.4w
Canonical URL
Open Graph2/3
Twitter Card2/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (11)
AI readiness recommendation preview...
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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.
A
85/100
13
Passed
1
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
20/20
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
9/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
6/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
1 recommendation
  • •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.
66/100
A+
1 mg
CO₂e / view
11.4 KB
Page Weight
95%
Cleaner Than
New Visitor
1 mg
vs
Returning (cached)
<0.001 g
Annual (10K/mo)
144 g
Emission Segments
Data Center
<0.001 g
Network
<0.001 g
Device
<0.001 g
Resource Breakdown
Images
3.3 KB
HTML
8.2 KB
Green Hosting Verified
Cloudflare
GWF Verified
4 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

36%Critical
Interactive

HTTPS

WAF

43d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

24.03.2026

Valid Until

22.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

ulozto.cz*.ulozto.cz

SHA-256 Fingerprint

FD:C2:3D:A6:4B:A6:BA:54:44:21:11:7F:0D:D6:70:B0:CE:CA:4E:73...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

alt-svc
h3=":443"; ma=86400
cache-control
🔴 No Cache(no-store, no-cache, must-revalidate)
cf-cache-status
DYNAMIC
cf-ray🇮🇹 Milan
9f936d3d2edc3d3b-MXP
content-encoding
zstd
content-type
text/html; charset=utf-8
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

73

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

mail.ulozto.cz

Domain Information

ulozto.cz

Domain Age
19 years

Created

04.05.2007

Expires

03.05.2027

Last Updated

30.05.2023

Registrar

REG-GRANSY

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

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
79/100
Mobile Friendly7 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
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Arial

WCAG AA
84/100
Readability
/30
22/30

16px · LH --

Hierarchy
/20
18/20

2.19x ratio · ✓ H1→H6

WCAG
/25
23/25

5.13:1 min contrast

Performance
/25
21/25

System fonts

Heading Font

Arial

Sans35px

Body Font

Arial

Sans16px

Contrast Ratio

5.13:1

WCAG AA (≥4.5:1)

Reading Comfort

~44 CPL

Narrow lines
35px
h1
27px
h2
35px
h3
16px
p
Minor Second
Scale

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

⚠️ Hard to read: Flesch score 48/100. Simplify sentences for wider reach.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.1:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

✅ Strong hierarchy: Headlines are 2.2x larger than body text.

✅ Modern fluid typography: clamp() with rem units ensures zoom accessibility (WCAG 1.4.4).

Fluid Type (rem)Flesch 48

Color Palette

7 unique colors
Light
#ffffff
Primary· 55.400000000000006%
#9a0f6c
Primary· 20%
#a78a9e
Secondary· 4.5%
#a12779
Accent· 2.7%
#861a62
Accent· 1.9%

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

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Scripts & Styles

9 Resources

6
Scripts
3
Styles
3
Async
0
Defer

Top Script Sources

static.ulozto.cz(4)googletagmanager.com(2)

Website Identity

ulozto.cz

19 years old
Location detected: 🇨🇿 Czech Republicvia tld
REG-GRANSYcs

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Last analyzed: 09 May 2026 at 20:24

Historical Analysis & Change Tracking