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Top Technologies

Google Font API
Font Scripts
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Google Tag Manager
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31 krnl.to Last Updated: 5 months

Success 55% of passed verification steps
Warning 30% of total warning
Errors 15% of total errors, require fast action

Desktop

Mobile

Performance Desktop Score 98%
Best Practices Desktop Score 100%
SEO Desktop Score 100%
PWA Desktop Score 29%
Performance Mobile Score 68%
Best Practices Mobile Score 100%
SEO Mobile Score 98%
PWA Mobile Score 38%
Page Authority Authority 9%
Domain Authority Domain Authority 5%
Moz Rank 0.9/10
Bounce Rate Rate 0%
Title Tag 10 Characters
// KRNL.TO
Meta Description 167 Characters
Join us on a life-long journey into understanding the internals of systems. We will mainly be focusing around the Windows and Linux internals, but not limited to that.
Effective URL 15 Characters
https://krnl.to
Excerpt Page content
// krnl.to// krnl.to// krnl.toFollowFollowhomenewslettermembersLinux Containers Internals: runcAt this point of our #lci-series, we have seen how to hack around and create containers. In this post, we will introduce some order and standardization. We...
Keywords Cloud Density
internals7 containers6 linux6 read5 anthony3 nandaa3 ishuah2 krnl2 kariuki2 around2
Keyword Consistency Keyword density is one of the main terms in SEO
Keyword Freq Title Desc Domain H1 H2
internals 7
containers 6
linux 6
read 5
anthony 3
nandaa 3
ishuah 2
krnl 2
kariuki 2
around 2
Google Preview Your look like this in google search result
// KRNL.TO
https://krnl.to
Join us on a life-long journey into understanding the internals of systems. We will mainly be focusing around the Windows and Linux internals, but not
Robots.txt File Detected
Sitemap.xml File Detected
Page Size Code & Text Ratio
Document Size: ~75.55 KB
Code Size: ~50.13 KB
Text Size: ~25.42 KB Ratio: 33.65%

Social Data

Estimation Traffic and Earnings

8
Unique Visits
Daily
14
Pages Views
Daily
$0
Income
Daily
224
Unique Visits
Monthly
399
Pages Views
Monthly
$0
Income
Monthly
2,592
Unique Visits
Yearly
4,704
Pages Views
Yearly
$0
Income
Yearly

Desktop

Desktop Screenshot
Properly size images Potential savings of 112 KiB
Serve images that are appropriately-sized to save cellular data and improve load time
Max Potential First Input Delay 70 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task
First Meaningful Paint 0.4 s
First Meaningful Paint measures when the primary content of a page is visible
Network Round Trip Times 30 ms
Network round trip times (RTT) have a large impact on performance. If the RTT to an origin is high, it's an indication that servers closer to the user could improve performance
Avoids an excessive DOM size 229 elements
A large DOM will increase memory usage, cause longer [style calculations](https://developers.google.com/web/fundamentals/performance/rendering/reduce-the-scope-and-complexity-of-style-calculations), and produce costly [layout reflows](https://developers.google.com/speed/articles/reflow)
Avoid large layout shifts 1 element found
These DOM elements were most affected by layout shifts. Some layout shifts may not be included in the CLS metric value due to [windowing](https://web.dev/articles/cls#what_is_cls)
User Timing marks and measures 4 user timings
Consider instrumenting your app with the User Timing API to measure your app's real-world performance during key user experiences
JavaScript execution time 0.3 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
Largest Contentful Paint element 1,040 ms
This is the largest contentful element painted within the viewport
Initial server response time was short Root document took 300 ms
Keep the server response time for the main document short because all other requests depend on it
Time to Interactive 1.4 s
Time to Interactive is the amount of time it takes for the page to become fully interactive
Minimize third-party usage Third-party code blocked the main thread for 0 ms
Third-party code can significantly impact load performance. Limit the number of redundant third-party providers and try to load third-party code after your page has primarily finished loading
Reduce unused CSS Potential savings of 15 KiB
Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity
Web app manifest or service worker do not meet the installability requirements 1 reason
Service worker is the technology that enables your app to use many Progressive Web App features, such as offline, add to homescreen, and push notifications. With proper service worker and manifest implementations, browsers can proactively prompt users to add your app to their homescreen, which can lead to higher engagement
First Contentful Paint 0.4 s
First Contentful Paint marks the time at which the first text or image is painted
Avoid long main-thread tasks 1 long task found
Lists the longest tasks on the main thread, useful for identifying worst contributors to input delay
Speed Index 0.9 s
Speed Index shows how quickly the contents of a page are visibly populated
Server Backend Latencies 70 ms
Server latencies can impact web performance. If the server latency of an origin is high, it's an indication the server is overloaded or has poor backend performance
Total Blocking Time 10 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds
Largest Contentful Paint 1.0 s
Largest Contentful Paint marks the time at which the largest text or image is painted
Minimizes main-thread work 0.6 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
Avoid serving legacy JavaScript to modern browsers Potential savings of 0 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. However, many aren't necessary for modern browsers. For your bundled JavaScript, adopt a modern script deployment strategy using module/nomodule feature detection to reduce the amount of code shipped to modern browsers, while retaining support for legacy browsers
Serve static assets with an efficient cache policy 5 resources found
A long cache lifetime can speed up repeat visits to your page
Avoids enormous network payloads Total size was 695 KiB
Large network payloads cost users real money and are highly correlated with long load times
Reduce unused JavaScript Potential savings of 106 KiB
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity

Mobile

Mobile Screenshot
Initial server response time was short Root document took 80 ms
Keep the server response time for the main document short because all other requests depend on it
Largest Contentful Paint element 3,510 ms
This is the largest contentful element painted within the viewport
First Contentful Paint 1.3 s
First Contentful Paint marks the time at which the first text or image is painted
Minimize main-thread work 3.6 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
Reduce JavaScript execution time 2.5 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
Max Potential First Input Delay 550 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task
Reduce unused CSS Potential savings of 16 KiB
Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity
Total Blocking Time 1,000 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds
Tap targets are not sized appropriately 73% appropriately sized tap targets
Interactive elements like buttons and links should be large enough (48x48px), or have enough space around them, to be easy enough to tap without overlapping onto other elements
Avoid long main-thread tasks 13 long tasks found
Lists the longest tasks on the main thread, useful for identifying worst contributors to input delay
Serve static assets with an efficient cache policy 5 resources found
A long cache lifetime can speed up repeat visits to your page
Avoids enormous network payloads Total size was 618 KiB
Large network payloads cost users real money and are highly correlated with long load times
Avoids an excessive DOM size 229 elements
A large DOM will increase memory usage, cause longer [style calculations](https://developers.google.com/web/fundamentals/performance/rendering/reduce-the-scope-and-complexity-of-style-calculations), and produce costly [layout reflows](https://developers.google.com/speed/articles/reflow)
Reduce unused JavaScript Potential savings of 105 KiB
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity
Avoid serving legacy JavaScript to modern browsers Potential savings of 0 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. However, many aren't necessary for modern browsers. For your bundled JavaScript, adopt a modern script deployment strategy using module/nomodule feature detection to reduce the amount of code shipped to modern browsers, while retaining support for legacy browsers
Time to Interactive 6.1 s
Time to Interactive is the amount of time it takes for the page to become fully interactive
Minimize third-party usage Third-party code blocked the main thread for 240 ms
Third-party code can significantly impact load performance. Limit the number of redundant third-party providers and try to load third-party code after your page has primarily finished loading
Web app manifest or service worker do not meet the installability requirements 1 reason
Service worker is the technology that enables your app to use many Progressive Web App features, such as offline, add to homescreen, and push notifications. With proper service worker and manifest implementations, browsers can proactively prompt users to add your app to their homescreen, which can lead to higher engagement
Server Backend Latencies 150 ms
Server latencies can impact web performance. If the server latency of an origin is high, it's an indication the server is overloaded or has poor backend performance
Properly size images Potential savings of 44 KiB
Serve images that are appropriately-sized to save cellular data and improve load time
Avoid large layout shifts 2 elements found
These DOM elements were most affected by layout shifts. Some layout shifts may not be included in the CLS metric value due to [windowing](https://web.dev/articles/cls#what_is_cls)
User Timing marks and measures 4 user timings
Consider instrumenting your app with the User Timing API to measure your app's real-world performance during key user experiences
Largest Contentful Paint 3.5 s
Largest Contentful Paint marks the time at which the largest text or image is painted
Document uses legible font sizes 100% legible text
Font sizes less than 12px are too small to be legible and require mobile visitors to “pinch to zoom” in order to read. Strive to have >60% of page text ≥12px
Speed Index 2.9 s
Speed Index shows how quickly the contents of a page are visibly populated
First Meaningful Paint 1.3 s
First Meaningful Paint measures when the primary content of a page is visible
Network Round Trip Times 40 ms
Network round trip times (RTT) have a large impact on performance. If the RTT to an origin is high, it's an indication that servers closer to the user could improve performance

Speed And Optimization Tips

Website speed has a huge impact on performance, affecting user experience, conversion rates and even rankings. ‪‬‬By reducing page load-times, users are less likely to get distracted and the search engines are more likely to reward you by ranking you
Title Website
Congratulations! Your title is optimized
Description Website
Warning! Your description is not optimized
Robots.txt
Congratulations! Your site have a robots.txt file
Sitemap.xml
Congratulations! We've found a sitemap file for your website
SSL Secure
Congratulations! Your site have Support to HTTPS
Headings
Warning! Your page not contain any H1 and H2 headings. H1 and H2 headings help indicate the important topics of your page to search engines
Blacklist
Congratulations! Your site is not listed in a blacklist
W3C Validator
Warning! Your site have errors W3C
Accelerated Mobile Pages (AMP)
Warning! Your site not have AMP Version
Domain Authority
Warning! Domain Authority of your website is slow. It is good to have domain authority more than 25.
GZIP Compress
Warning! Your site not is compressed, this can make slower response for the visitors
Favicon
Congratulations! Your website appears to have a favicon.
Broken Links
Congratulations! You not have broken links View links

Alexa Rank

99,999,999

Global Rank

99,999,999

-
Traffic
Search

Domain Available

Domain (TDL) and Typo Status
krnl.co Already Registered
krnl.us Already Registered
krnl.com Already Registered
krnl.org Already Registered
krnl.net Already Registered
knl.to Available
irnl.to Available
ornl.to Available

Information Server

Response Header HTTP headers carry information about the client browser, the requested page and the server
HTTP/1.1 200 OK
Age: 0
Cache-Control: public, max-age=0, must-revalidate
Connection: keep-alive
Content-Length: 0
Content-Security-Policy: default-src *; script-src * 'unsafe-eval' 'unsafe-inline'; style-src * 'unsafe-inline'; font-src *; img-src * data:
Content-Type: text/html; charset=utf-8
Date: Sat, 27 Jan 2024 04:26:23 GMT
Etag: "37dffjr1rh1np3"
Referrer-Policy: origin-when-cross-origin
Server: Vercel
Strict-Transport-Security: max-age=63072000
X-Content-Type-Options: nosniff
X-Frame-Options: deny
X-Matched-Path: /
X-Powered-By: Next.js
X-Vercel-Cache: HIT
X-Vercel-Id: iad1:iad1:iad1::pdx1::fs5lg-1706329584105-87a8bdb5513e
DNS Records DNS Resource Records associated with a hostname
View DNS Records