rtl-sdr.com favicon

rtl-sdr.com

https://rtl-sdr.com· First analyzed 27 Apr 2026· Updated 27 Apr 2026
Export
rtl-sdr.com
Desktop screenshot of rtl-sdr.com
Mobile screenshot of rtl-sdr.com
Mobile

Sponsored

Hosting Provider

cloudflare.com

IP Address

104.20.17.6

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ed.ns.cloudflare.com.nina.ns.cloudflare.com.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
745 ms10%
Speed Index
968 ms10%
Largest Contentful Paint
25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.5 MB
79 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
WordPress
cms
Blaskanv2.6.4Custom
by Per Sandström
View Theme

SEO Analysis

D58/100
18
9
2
Meta Tags0/15
Content11/12
Headings3/8
Technical15/25
E-E-A-T3/7
Images6/7
Links5/5
URL5/5
Social2/5
Freshness2/4
Mobile3/4
Indexability3/3
R
rtl-sdr.comrtl-sdr.com

No Title Found

No description available for this page.

Title Length0 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

  • Missing page title — critical for SEO rankings and SERP display
  • Missing meta description — important for click-through rates in SERPs

Crawlability

Sitemap

Type: index

10 URLs

10 sub-sitemaps

robots.txt

2 rules

Allows all crawlers

Local SEO

Local Search Readiness

16/100
Poor
6 11 2

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

Sponsored

AI & LLM Readiness

D42/100
Bot Access
20/25
Machine Read.
9/25
Schema Data
0/25
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.txt
llms-full.txt
Semantic HTML
Heading Hierarchy
code blocksnavheader/footer
Text ratio:11%
Words:3,590
Token eff.:Poor Structure
Depth:3/5

Structured Data

No Schema

Citation Readiness

Opening Summary62w
Descriptive Headingsavg 1.9w
Canonical URL
Open Graph0/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (7)
AI readiness recommendation preview...

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
67/100
9
Passed
7
Critical
1
Warnings
Images & Alt Text
15/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
12/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
12/15
Verifies form fields have labels, error messages are clear, and inputs are properly associated.
Color & Contrast
12/15
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
7/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
3 recommendations
  • Accessibility recommendation preview...

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
C
160 mg
CO₂e / view
1.5 MB
Page Weight
60%
Cleaner Than
New Visitor
183 mg
vs
Returning (cached)
92 mg
Annual (10K/mo)
19.2 kg
Emission Segments
Data Center
8 mg
Network
47 mg
Device
105 mg
Resource Breakdown
JavaScript
343.7 KB
Images
162.0 KB
CSS
927.3 KB
HTML
35.8 KB
Other
115.8 KB
Green Hosting Verified
Cloudflare
GWF Verified
3 recommendations
  • Carbon footprint recommendation preview...
C

Security Score

61%Fair
Interactive

HTTPS

WAF

55d

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)

rtl-sdr.com*.rtl-sdr.com

SHA-256 Fingerprint

5C:D2:B7:38:AC:93:A0:EB:A9:B1:37:F7:5D:C3:78:20:8B:00:BD:A5...

Top Recommendations

Security recommendation preview

HTTP Headers

Developer Console

alt-svc
h3=":443"; ma=86400
cf-cache-status
DYNAMIC
cf-edge-cache
cache,platform=wordpress
cf-ray🇫🇷 Paris
9f306885bae86fe4-CDG
content-encoding
Brotli(br)
content-type
text/html; charset=UTF-8
Good Warning Issue

Email Infrastructure

Google Workspace

Score

90

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (5)

alt2.aspmx.l.google.com
alt4.aspmx.l.google.com
alt3.aspmx.l.google.com
aspmx.l.google.com

+1 more

Domain Information

rtl-sdr.com

Domain Age
13 years

Created

09.04.2013

Expires

09.04.2027

Last Updated

10.03.2026

Registrar

NameCheap, 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.
C
61/100
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
2 recommendations
  • Mobile compatibility recommendation preview...

Typography & Readability

LeagueGothic + Helvetica Neue

WCAG Partial
77/100
Readability
/30
25/30

15px · LH 1.47

Hierarchy
/20
14/20

4.8x ratio

WCAG
/25
17/25

1.84:1 min contrast

Performance
/25
21/25

System fonts

Heading Font

LeagueGothic

Sans72px

Body Font

Helvetica Neue

Sans15px

Contrast Ratio

1.84:1

37 issues

Reading Comfort

~50 CPL

Optimal (45–75)
72px
h1
13px
h3
15px
p

⚠️ Small text: 15px may strain on mobile. Use ≥16px for WCAG compliance.

✅ Optimal line spacing: 1.47 ratio (ideal range 1.4–1.6).

✅ Optimal line length: ~50 chars/line (ideal 45–75 CPL).

⚠️ Hard to read: Flesch score 42/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 37 elements below WCAG AA threshold (min 1.8:1).

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

Color Palette

11 unique colors
8.72:1 AAA Light
#ffffff
Background· 62.5%
#51494c
Other· 3.7%
#a5b7b8
Primary· 5.4%
#142021
Secondary· 4.6%
#5599a6
Secondary· 4.1%
#b59d7c
Secondary· 1.3%

Business & Marketing Stack

4 Tools Detected

Enterprise

Marketing Automation

1

Email marketing and automation platforms

Behavior Analytics

1

User behavior and product analytics

Advertising

1

Ad platforms and retargeting pixels

Privacy & Cookies

1

Cookie consent and privacy compliance tools

4

Categories

4

Total Tools

1

Enterprise

1

Mid-Market

Assessment: Sophisticated marketing and sales technology infrastructure

Ad Networks

Google AdSense

Sponsored

Scripts & Styles

30 Resources

20
Scripts
10
Styles
3
Async
1
Defer

Top Script Sources

rtl-sdr.com(16)pagead2.googlesyndication.com(2)fd.cleantalk.org(1)moderate.cleantalk.org(1)

Website Identity

rtl-sdr.com

13 years old
Location detected: 🇨🇦 Canadavia ip
NameCheap, Inc.📧 Google Workspaceen-US

Sponsored

Last analyzed: 27 Apr 2026 at 19:59

Historical Analysis & Change Tracking