fler.cz

https://fler.cz· First analyzed 07 May 2026· Updated 07 May 2026

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fler.cz

Mobile

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Hosting Provider

Master Internet s.r.o

IP Address

185.58.42.49

Site Location

🇨🇿 Czech Republicvia tld

Server Location

🇨🇿 Brno-střed, Czechia

ASN

AS24971

Organization

Master Internet s.r.o

Nameservers

dns1.master.cz.dns2.master.cz.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

448 ms10%

Speed Index

582 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

78 KB

4 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Master Internet s.r.o

SEO Analysis

F33/100

Meta Tags10/15

Content0/12

Headings0/8

Technical14/25

E-E-A-T0/7

Images0/7

Links0/5

URL5/5

Social0/5

Freshness0/4

Mobile1/4

Indexability3/3

fler.czfler.cz

Fler - Umění a řemeslo | Fler.cz

Na Fleru najdete více než dva miliony produktů od desetitisíců tvůrců. Každý z nich je originál.

Title Length32 chars

Recommended: 50-60 chars (~193px / 580px)

Description Length96 chars

Recommended: 120-160 chars

Issues (2)

• Very thin content (7 words). Search engines need substantial content for ranking.
• Missing H1 tag — every page should have exactly one H1

12 issues found

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Crawlability

Sitemap

Type: index

82 URLs

82 sub-sitemaps

robots.txt

69 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.

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AI & LLM Readiness

F23/100

Bot Access

20/25

Machine Read.

1/25

Schema Data

0/25

Citation

2/25

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

Text ratio:0%

Words:0

Token eff.:Too Short

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (12)

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.

66/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

6/20

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

1/15

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

2 recommendations

•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

A+

10 mg

CO₂e / view

77.9 KB

Page Weight

95%

Cleaner Than

New Visitor

11 mg

Returning (cached)

6 mg

Annual (10K/mo)

1.2 kg

Emission Segments

Data Center

2 mg

Network

2 mg

Device

5 mg

Resource Breakdown

JavaScript

75.8 KB

HTML

1.4 KB

Other

769 B

Green Hosting Not Verified

Master Internet s.r.o

3 recommendations

•Carbon footprint recommendation preview...

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Security Score

31%Critical

Interactive

HTTPS

No WAF

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

11.02.2026

Valid Until

12.05.2026

Subject Alternative Names (3)

api.fler.czfler.czwww.fler.cz

SHA-256 Fingerprint

3E:9B:E0:24:BD:DF:FE:2F:C7:62:D9:60:1F:51:5F:C5:C1:CB:EB:C4...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-cache, max-age=0, must-revalidate, no-store)

content-encoding

📦 Gzip(gzip)

content-length

1093

content-type

text/html; charset=utf-8

date

Thu, 07 May 2026 13:49:10 GMT

expires

Sun, 19 Nov 1978 05:00:00 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (3)

wes1-mx2.wedos.net

wes1-mx-backup.wedos.net

wes1-mx2.wedos.net

Domain Information

fler.cz

Domain Age

18y 3m

Created

13.01.2008

Expires

12.01.2032

Last Updated

13.06.2012

Registrar

REG-INTERNET-CZ

DNSSEC

Not Enabled

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.

51/100

Mobile Friendly

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, minimum-scale=1, maximum-scale=1, user-scalable=no

4 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Times New Roman

64/100

Readability

/30

21/30

16px · LH --

Hierarchy

/20

10/20

WCAG

/25

19/25

Performance

/25

14/25

1 font

Heading Font

Times New Roman

Body Font

Times New Roman

Serif16px

Contrast Ratio

Reading Comfort

Single Family

left aligned

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

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

⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

Buy on MyFonts

Color Palette

6 unique colors

Light

#ffffff

Primary· 98%

#b9bdc6

Secondary· 0.7999999999999999%

#e96295

Accent· 0.3%

#d4dddf

Secondary· 0.2%

#f1e9ef

Secondary· 0.1%

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Scripts & Styles

2 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(2)

Website Identity

fler.cz

18 years old

Location detected: 🇨🇿 Czech Republicvia tld

REG-INTERNET-CZcs

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Last analyzed: 07 May 2026 at 13:49

Historical Analysis & Change Tracking