kfrlib.com Kfrlib.com

   
KFR | Fast, modern C++ DSP framework

Domain Summary

What percent of global Internet users visit Kfrlib.com?

• 4.0E-7% of global Internet users visit Kfrlib.com

How many people visit Kfrlib.com each day?

• Kfrlib.com receives approximately 19 visitors and 86 page impressions per day.

Which countries does Kfrlib.com receive most of its visitors from?

• Kfrlib.com is mostly visited by people located in United States.

How much Kfrlib.com can earn?

• Kfrlib.com should earn about $0.41/day from advertising revenue.

What is Kfrlib.com estimated value?

• Estimated value of Kfrlib.com is $417.82.

What IP addresses does Kfrlib.com resolve to?

• Kfrlib.com resolves to the IP addresses 206.189.247.111.

Where are Kfrlib.com servers located in?

• Kfrlib.com has servers located in Slough, Slough, SL1, United Kingdom.

kfrlib.com Profile

Title: KFR | Fast, modern C++ DSP framework Description:KFR | Fast, modern C++ DSP framework, DFT/FFT, Audio resampling, FIR, IIR and Biquad filters, Filter design, Tensors, Full vectorization
Tags:
kfr | fast
filter design
iir and biquad filters
audio resampling
full vectorization
tensors
dft fft
modern c++ dsp framework
fir
Edit Site Info

What technologies does kfrlib.com use?

These are the technologies used at kfrlib.com. kfrlib.com has a total of 8 technologies installed in 6 different categories.
UI frameworks
Bootstrap Bootstrap
Web Servers
Caddy Caddy
Miscellaneous
HTTP/3 HTTP/3
Open Graph Open Graph
PWA PWA
Static Site Generator
Hugo Hugo
CDN
jsDelivr jsDelivr
JavaScript Graphics
KaTeX KaTeX

kfrlib.com Traffic Analysis

This website is viewed by an estimated 19 visitors daily, generating a total of 86 pageviews. This equates to about 575.7 monthly visitors. Kfrlib.com traffic has increased by 382.81% compared to last month.
Daily Visitors19
100.52%
Monthly Visits575.7
382.81%
Pages per Visit4.40
48.99%
Visit duration02:15
2.13%
Bounce Rate33.35%
Is this your site?Verify your site's metrics.
Daily Unique Visitors:
19
Monthly Visits:
576
Pages per Visit:
4.40
Daily Pageviews:
86
Avg. visit duration:
02:15
Bounce rate:
33.35%
Global Reach:
4.0E-7%
Monthly Visits (SEMrush):
927
Monthly Unique Visitors (SEMrush):
385
Monthly Visits (SimilarWeb):
589
HypeRank:
n/a
SEMrush Rank:
5,077,405
*All traffic values are estimates only.

Traffic sources

Direct:
49.41%
Referral:
0%
Search:
9.06%
Social:
41.53%
Paid:
0%

Desktop vs Mobile

Desktop:
100.00%
Mobile:
0%

Total Visits Last 3 Months

462
MAR
119.2
APR
575.7
MAY

Visitors by country

Country
Users%
 
United States 100.00%
Last update was 8 days ago
     
This can take up to 60 seconds. Please wait...

*HypeStat.com is not promoting or affiliated with kfrlib.com in any way. Only publicly available statistics data are displayed.

Search Engine Indexes ▼

Search engine indexes are huge databases or collections of net pages that search engines like google like google and yahoo use to retrieve applicable facts while customers carry out searches. These indexes are created through search engines like google and yahoo through crawling and indexing net pages from throughout the internet.
Google Index:
143

  ▼

SEMrush is a complete on line advertising and marketing platform that gives a extensive variety of gear and functions to help companies and entrepreneurs in enhancing their on line visibility and optimizing their virtual advertising and marketing strategies.
SemRushSemRush
Domain:
  kfrlib.com
Rank:
(Rank based on keywords, cost and organic traffic)
  5,077,405
Organic Keywords:
(Number of keywords in top 20 Google SERP)
  47
Organic Traffic:
(Number of visitors coming from top 20 search results)
  41
Organic Cost:
((How much need to spend if get same number of visitors from Google Adwords)
  $0.00
Full SEMrush Report >>

Revenue report ▼

Google.com would generate approximately $0.4 per day if the source of income were advertisements, which equates to an estimated monthly revenue of $12.3 and annual gross revenue of approximately $149.7. Based on these figures, the site's net worth is estimated at around $417.8.

How much would kfrlib.com make?

Daily Revenue:
$0.41
Monthly Revenue:
$12.30
Yearly Revenue:
$149.65
*All earnings values are estimates only.

Daily earning by country

 
CountryPageviewsEarning
 
United States 86$0.42

Loss of money due to Adblock?

Daily Revenue Loss:
$0.07
Monthly Revenue Loss:
$2.24
Yearly Revenue Loss:
$27.29
Daily Pageviews Blocked:
15
Monthly Pageviews Blocked:
464
Yearly Pageviews Blocked:
5,650

Daily revenue loss by country

 
CountryBlockedLost Money
 
United States 15$0.07

How much is kfrlib.com worth?

Website Value:
$417.8

Ad Experience Report ▼

Summary of the ad experience rating of a website for a specific platform.

Mobile summary

Root domain:
kfrlib.com
Ad filtering:
(Chrome is not filtering ads on your site.)
Off
Status:
(The status of the site that is reviewed for the Better Ads Standards.)
Not reviewed

Desktop summary

Root domain:
kfrlib.com
Ad filtering:
(Chrome is not filtering ads on your site.)
Off
Status:
(The status of the site that is reviewed for the Better Ads Standards.)
Not reviewed

Abusive Experience Report ▼

Summary of the abusive experience rating of a website.
Root domain:
kfrlib.com
Enforcement:
(Chrome is not preventing your site from opening new windows or tabs.)
Off
Status:
(The status of the site reviewed for the abusive experiences.)
Not reviewed

Where is kfrlib.com hosted? ▼

Kfrlib.com may be hosted in multiple data centers distributed in different locations around the world. This is probably just one of them.
Server IP:
206.189.247.111
ASN:
AS14061 
ISP:
DigitalOcean, LLC 
Server Location:
Slough
Slough, SLG
SL1
United Kingdom, GB
 

Other sites hosted on 206.189.247.111

There are no other sites hosted on this IP

How fast does kfrlib.com load? ▼

The average loading time of kfrlib.com is 209 ms. The Desktop speed index is 93 and mobile speed index is 67.
Average Load Time:
209 ms

Page Speed (Google PageSpeed Insights) - Desktop

93
0-49 50-89 90-100 i

Field Data

Over the last 30 days, the field data shows that this page has a speed compared to other pages in the Chrome User Experience Report.We are showing the 90th percentile of FCP and the 95th percentile of FID.

Cumulative Layout Shift (CLS)0 0% of loads for this page have a fast (<0s) Cumulative Layout Shift (CLS) 0% 0% of loads for this page have an average (0s ~ 0s) Cumulative Layout Shift (CLS) 0% 0% of loads for this page have a slow (>0s) Cumulative Layout Shift (CLS) 0%
Time To First Byte (TTFB)0 0% of loads for this page have a fast (<0s) Time To First Byte (TTFB) 0% 0% of loads for this page have an average (0s ~ 0s) Time To First Byte (TTFB) 0% 0% of loads for this page have a slow (>0s) Time To First Byte (TTFB) 0%
First Contentful Paint (FCP)0 0% of loads for this page have a fast (<0s) First Contentful Paint (FCP) 0% 0% of loads for this page have an average (0s ~ 0s) First Contentful Paint (FCP) 0% 0% of loads for this page have a slow (>0s) First Contentful Paint (FCP) 0%
First Input Delay (FID)0 0% of loads for this page have a fast (<0ms) First Input Delay (FID) 0% 0% of loads for this page have an average (0ms ~ 0ms) First Input Delay (FID) 0% 0% of loads for this page have a slow (>0ms) First Input Delay (FID) 0%
Interaction To Next Paint (INP)0 0% of loads for this page have a fast (<0ms) Interaction To Next Paint (INP) 0% 0% of loads for this page have an average (0ms ~ 0ms) Interaction To Next Paint (INP) 0% 0% of loads for this page have a slow (>0ms) Interaction To Next Paint (INP) 0%
Largest Contentful Paint (LCP)0 0% of loads for this page have a fast (<0ms) Largest Contentful Paint (LCP) 0% 0% of loads for this page have an average (0ms ~ 0ms) Largest Contentful Paint (LCP) 0% 0% of loads for this page have a slow (>0ms) Largest Contentful Paint (LCP) 0%

Origin Data

All pages served from this origin have an speed compared to other pages in the Chrome User Experience Report. over the last 30 days.To view suggestions tailored to each page, analyze individual page URLs.

Cumulative Layout Shift (CLS)0 0% of loads for this page have a fast (<0s) Cumulative Layout Shift (CLS) 0% 0% of loads for this page have an average (0s ~ 0s) Cumulative Layout Shift (CLS) 0% 0% of loads for this page have a slow (>0s) Cumulative Layout Shift (CLS) 0%
Time To First Byte (TTFB)0 0% of loads for this page have a fast (<0s) Time To First Byte (TTFB) 0% 0% of loads for this page have an average (0s ~ 0s) Time To First Byte (TTFB) 0% 0% of loads for this page have a slow (>0s) Time To First Byte (TTFB) 0%
First Contentful Paint (FCP)0 0% of loads for this page have a fast (<0s) First Contentful Paint (FCP) 0% 0% of loads for this page have an average (0s ~ 0s) First Contentful Paint (FCP) 0% 0% of loads for this page have a slow (>0s) First Contentful Paint (FCP) 0%
First Input Delay (FID)0 0% of loads for this page have a fast (<0ms) First Input Delay (FID) 0% 0% of loads for this page have an average 0ms ~ 0ms) First Input Delay (FID) 0% 0% of loads for this page have a slow (>0ms) First Input Delay (FID) 0%
Interaction To Next Paint (INP)0 0% of loads for this page have a fast (<0ms) Interaction To Next Paint (INP) 0% 0% of loads for this page have an average (0ms ~ 0ms) Interaction To Next Paint (INP) 0% 0% of loads for this page have a slow (>0ms) Interaction To Next Paint (INP) 0%
Largest Contentful Paint (LCP)0 0% of loads for this page have a fast (<0ms) Largest Contentful Paint (LCP) 0% 0% of loads for this page have an average (0ms ~ 0ms) Largest Contentful Paint (LCP) 0% 0% of loads for this page have a slow (>0ms) Largest Contentful Paint (LCP) 0%

Lab Data

Legacy JavaScript  
Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile features, unless you know you must support older browsers. Baseline Learn why most sites can deploy ES6+ code without transpiling
Max Potential First Input Delay 50 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric
Speed Index 0.8 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more about the Speed Index metric
Lazy load third-party resources with facades  
Some third-party embeds can be lazy loaded. Consider replacing them with a facade until they are required. Learn how to defer third-parties with a facade
Duplicated JavaScript  
Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.
INP by phase  
Start investigating with the longest phase. To reduce processing duration, , often JS. Delays can be minimized optimize the main-thread costs
Total Blocking Time 0 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more about the Total Blocking Time metric
First Contentful Paint 0.8 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more about the First Contentful Paint metric
First Meaningful Paint  
First Meaningful Paint measures when the primary content of a page is visible. Learn more about the First Meaningful Paint metric
Largest Contentful Paint 1.6 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn more about the Largest Contentful Paint metric
Font display  
Consider setting to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with . font-display font metric overrides
Improve image delivery  
Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size
Time to Interactive 1.6 s
Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric

Page Speed (Google PageSpeed Insights) - Mobile

67
0-49 50-89 90-100 i

Field Data

Over the last 30 days, the field data shows that this page has a speed compared to other pages in the Chrome User Experience Report.We are showing the 90th percentile of FCP and the 95th percentile of FID.

Cumulative Layout Shift (CLS)0 0% of loads for this page have a fast (<0s) Cumulative Layout Shift (CLS) 0% 0% of loads for this page have an average (0s ~ 0s) Cumulative Layout Shift (CLS) 0% 0% of loads for this page have a slow (>0s) Cumulative Layout Shift (CLS) 0%
Time To First Byte (TTFB)0 0% of loads for this page have a fast (<0s) Time To First Byte (TTFB) 0% 0% of loads for this page have an average (0s ~ 0s) Time To First Byte (TTFB) 0% 0% of loads for this page have a slow (>0s) Time To First Byte (TTFB) 0%
First Contentful Paint (FCP)0 0% of loads for this page have a fast (<0s) First Contentful Paint (FCP) 0% 0% of loads for this page have an average (0s ~ 0s) First Contentful Paint (FCP) 0% 0% of loads for this page have a slow (>0s) First Contentful Paint (FCP) 0%
First Input Delay (FID)0 0% of loads for this page have a fast (<0ms) First Input Delay (FID) 0% 0% of loads for this page have an average (0ms ~ 0ms) First Input Delay (FID) 0% 0% of loads for this page have a slow (>0ms) First Input Delay (FID) 0%
Interactive To Next Paint (INP)0 0% of loads for this page have a fast (<0s) Interactive To Next Paint (INP) 0% 0% of loads for this page have an average (0s ~ 0s) Interactive To Next Paint (INP) 0% 0% of loads for this page have a slow (>0s) Interactive To Next Paint (INP) 0%
Largest Contentful Paint (LCP)0 0% of loads for this page have a fast (<0s) Largest Contentful Paint (LCP) 0% 0% of loads for this page have an average (0s ~ 0s) Largest Contentful Paint (LCP) 0% 0% of loads for this page have a slow (>0s) Largest Contentful Paint (LCP) 0%

Origin Data

All pages served from this origin have an speed compared to other pages in the Chrome User Experience Report. over the last 30 days.To view suggestions tailored to each page, analyze individual page URLs.

Cumulative Layout Shift (CLS)0 0% of loads for this page have a fast (<0s) Cumulative Layout Shift (CLS) 0% 0% of loads for this page have an average (0s ~ 0s) Cumulative Layout Shift (CLS) 0% 0% of loads for this page have a slow (>0s) Cumulative Layout Shift (CLS) 0%
Time To First Byte (TTFB)0 0% of loads for this page have a fast (<0s) Time To First Byte (TTFB) 0% 0% of loads for this page have an average (0s ~ 0s) Time To First Byte (TTFB) 0% 0% of loads for this page have a slow (>0s) Time To First Byte (TTFB) 0%
First Contentful Paint (FCP)0 0% of loads for this page have a fast (<0s) First Contentful Paint (FCP) 0% 0% of loads for this page have an average (0s ~ 0s) First Contentful Paint (FCP) 0% 0% of loads for this page have a slow (>0s) First Contentful Paint (FCP) 0%
First Input Delay (FID)0 0% of loads for this page have a fast (<0ms) First Input Delay (FID) 0% 0% of loads for this page have an average 0ms ~ 0ms) First Input Delay (FID) 0% 0% of loads for this page have a slow (>0ms) First Input Delay (FID) 0%
Interactive To Next Paint (INP)0 0% of loads for this page have a fast (<0s) Interactive To Next Paint (INP) 0% 0% of loads for this page have an average (0s ~ 0s) Interactive To Next Paint (INP) 0% 0% of loads for this page have a slow (>0s) Interactive To Next Paint (INP) 0%
Largest Contentful Paint (LCP)0 0% of loads for this page have a fast (<0s)Largest Contentful Paint (LCP) 0% 0% of loads for this page have an average (0s ~ 0s)Largest Contentful Paint (LCP) 0% 0% of loads for this page have a slow (>0s)Largest Contentful Paint (LCP) 0%

Lab Data

Speed Index 3.6 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more about the Speed Index metric
INP by phase  
Start investigating with the longest phase. To reduce processing duration, , often JS. Delays can be minimized optimize the main-thread costs
Total Blocking Time 0 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more about the Total Blocking Time metric
Improve image delivery  
Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size
First Meaningful Paint  
First Meaningful Paint measures when the primary content of a page is visible. Learn more about the First Meaningful Paint metric
First Contentful Paint 3.6 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more about the First Contentful Paint metric
Font display  
Consider setting to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with . font-display font metric overrides
Legacy JavaScript  
Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile features, unless you know you must support older browsers. Baseline Learn why most sites can deploy ES6+ code without transpiling
Lazy load third-party resources with facades  
Some third-party embeds can be lazy loaded. Consider replacing them with a facade until they are required. Learn how to defer third-parties with a facade
Max Potential First Input Delay 50 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric
Time to Interactive 7.7 s
Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric
Largest Contentful Paint 7.7 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn more about the Largest Contentful Paint metric
Duplicated JavaScript  
Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Does kfrlib.com use compression? ▼

Website compression is the process of reducing the size of website files, such as HTML, CSS, JavaScript, and image files, to improve website performance and load times. Compressing website files can significantly reduce the amount of data that needs to be transferred from the server to the user's browser, resulting in faster page load times and improved user experience. Files on kfrlib.com are reduced by %.
kfrlib.com does not use compression.
Original size: 40.88 KB
Compressed size: n/a
File reduced by: (%)

Google Safe Browsing ▼

Google Safe Browsing is a service provided by Google that helps protect users from visiting websites that may contain malicious or harmful content, such as malware, phishing attempts, or deceptive software.
This site is not currently listed as suspicious

MyWot.com Reputation Ratings

MyWOT (short for "My Web of Trust") is a web-based reputation and rating service that provides users with information about the trustworthiness and safety of websites.
Status:
  SAFE

SSL Checker - SSL Certificate Verify ▼

An SSL (Secure Sockets Layer) certificate is a digital certificate that establishes a secure encrypted connection between a web server and a user's web browser. It provides authentication and encryption, ensuring that data transmitted between the server and the browser remains private and protected. kfrlib.com supports HTTPS.
 kfrlib.com supports HTTPS
     
Verifying SSL Support. Please wait...
Common Name: kfrlib.com
Organization:
Location:
Issuer: E5
Valid from: May 15 06:01:53 2025 GMT
Valid until: Aug 13 06:01:52 2025 GMT
Authority: CA:FALSE
Keysize:
Common Name: E5
Organization: Let's Encrypt
Location: US
Issuer: ISRG Root X1
Valid from: Mar 13 00:00:00 2024 GMT
Valid until: Mar 12 23:59:59 2027 GMT
Authority: CA:TRUE
Keysize:

Verify HTTP/2 Support ▼

HTTP/2 (Hypertext Transfer Protocol version 2) is a major revision of the HTTP protocol, which is the foundation of data communication on the World Wide Web. It was developed as an improvement over the previous HTTP/1.1 version to enhance web performance and efficiency.
 kfrlib.com supports HTTP/2
     
Verifying HTTP/2.0 Support. Please wait...

Http Header ▼

HTTP headers are extra portions of records despatched among a consumer (which include an internet browser) and a server at some stage in an HTTP request or response. They offer instructions, metadata, or manipulate parameters for the conversation among the consumer and server. 
accept-ranges: bytes
alt-svc: h3=":443"; ma=2592000
cache-control: max-age=3600
cache-control: max-age=3600, public
content-type: text/html
date: Tue, 10 Jun 2025 21:25:41 GMT
etag: "6839d8a8-a38a"
expires: Tue, 10 Jun 2025 22:25:41 GMT
last-modified: Fri, 30 May 2025 16:11:20 GMT
server: Caddy
server: nginx/1.27.5
content-length: 41866

DNS Lookup ▼

DNS entries (Domain Name System) are a critical component of the Internet infrastructure. They act as directories that translate human-readable domain names (such as example.com) to machine-readable IP addresses. DNS records are stored on DNS servers and help forward internet traffic efficiently.
Type Ip Target/Txt TTL
A 206.189.247.111 1743

Whois Lookup ▼

Domain WHOIS is a public database that provides information about domain names, including registered owners, contact information, domain registrars, registration and expiration dates, name servers, and other relevant information. Domain registration for this website began on April 10, 2016 and will expire on April 10, 2026 if not renewed. This website is now assigned through the registrar Domain.com, LLC. The WHOIS data for this website's domain was last updated on April 9, 2025.
Domain Created:
2016-04-10
Domain Expires:
2026-04-10
Domain Updated:
2025-04-09
Domain Age:
9 years 2 months 9 days
Domain Registrar:
Domain.com, LLC
Domain Owner:
Domain Privacy Service FBO Registrant.
WhoIs:
 

Domain Name: KFRLIB.COM
Registry Domain ID: 2020585741_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.domain.com
Registrar URL: www.domain.com
Updated Date: 2025-04-09T22:48:22
Creation Date: 2016-04-10T18:56:13
Registrar Registration Expiration Date: 2026-04-10T18:56:13
Registrar: Domain.com, LLC
Registrar IANA ID: 886
Reseller: Domain.com
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Registry Registrant ID: 
Registrant Name: Domain Privacy Service FBO Registrant.
Registrant Organization: Domain Privacy Service FBO Registrant.
Registrant Street: 5335 Gate Pkwy 
Registrant City: Jacksonville
Registrant State/Province: FL
Registrant Postal Code: 32256
Registrant Country: US
Registrant Phone: +1.6027165339
Registrant Phone Ext: 
Registrant Fax: 
Registrant Fax Ext: 
Registrant Email: email
Registry Admin ID: 
Admin Name: Domain Privacy Service FBO Registrant.
Admin Organization: Domain Privacy Service FBO Registrant.
Admin Street: 5335 Gate Pkwy 
Admin City: Jacksonville
Admin State/Province: FL
Admin Postal Code: 32256
Admin Country: US
Admin Phone: +1.6027165339
Admin Phone Ext: 
Admin Fax: 
Admin Fax Ext: 
Admin Email: email
Registry Tech ID: 
Tech Name: Domain Privacy Service FBO Registrant.
Tech Organization: Domain Privacy Service FBO Registrant.
Tech Street: 5335 Gate Pkwy 
Tech City: Jacksonville
Tech State/Province: FL
Tech Postal Code: 32256
Tech Country: US
Tech Phone: +1.6027165339
Tech Phone Ext: 
Tech Fax: 
Tech Fax Ext: 
Tech Email: email
Name Server: ns1.digitalocean.com
Name Server: ns2.digitalocean.com
Name Server: ns3.digitalocean.com
DNSSEC: unsigned
Registrar Abuse Contact Email: email
Registrar Abuse Contact Phone: +1.6027165396
URL of the ICANN WHOIS Data Problem Reporting System: https://icann.org/wicf
>>> Last update of WHOIS database: 2025-06-10T21:26:26Z