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Top Technologies

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Web Frameworks

92 gnu.org Last Updated: 9 months

Success 70% of passed verification steps
Warning 15% of total warning
Errors 15% of total errors, require fast action

Desktop

Mobile

Performance Desktop Score 100%
Best Practices Desktop Score 85%
SEO Desktop Score 90%
Progressive Web App Desktop Score 38%
Performance Mobile Score 100%
Best Practices Mobile Score 85%
SEO Mobile Score 89%
Progressive Web App Mobile Score 41%
Page Authority Authority 71%
Domain Authority Domain Authority 94%
Moz Rank 7.1/10
Bounce Rate Rate 0%
Charset Encoding
Great, language/character encoding is specified: UTF-8
Title Tag 55 Characters
THE GNU OPERATING SYSTEM AND THE--- SOFTWARE MOVEMENT
Meta Description 152 Characters
Since 1983, developing the--- Unix style operating system GNU, so that computer users can have the---dom to share and improve the software they use.
Effective URL 18 Characters
http://www.gnu.org
Excerpt Page content
The GNU Operating System and the--- Software Movement Skip to main text Set language English [en]   Deutsch [de]   español [es]   ف...
Keywords Cloud Density
software29 free27 freedom15 more12 system9 users8 linux7 operating7 what6 program5
Keyword Consistency Keyword density is one of the main terms in SEO
Keyword Freq Title Desc Domain H1 H2
software 29
free 27
freedom 15
more 12
system 9
users 8
linux 7
operating 7
what 6
program 5
Google Preview Your look like this in google search result
THE GNU OPERATING SYSTEM AND THE--- SOFTWARE MOVEMENT
http://www.gnu.org
Since 1983, developing the--- Unix style operating system GNU, so that computer users can have the---dom to share and improve the software they us
Robots.txt File Detected
Sitemap.xml File Detected
Whois Is a query and response protocol that is widely used for querying databases that store the registered users or assignees of an Internet resource, such as a domain name, an IP address block, or an autonomous system
Updated: 2019-01-30 / 2 years
Create on: 1995-11-24 / 25 years
Expires on: 2022-11-23 / 26 months 14 days

Gandi SAS ,US
Registrar Whois Server: whois.gandi.net
Registrar URL: http://www.gandi.net

Nameservers
NS1.GNU.ORG
NS2.GNU.ORG
NS3.GNU.ORG
NS4.GNU.ORG
Page Size Code & Text Ratio
Document Size: ~54.93 KB
Code Size: ~21 KB
Text Size: ~33.93 KB Ratio: 61.77%

Estimation Traffic and Earnings

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Technologies

PWA - Manifest

Manifest is not valid
Your site don't have valid manifest.json, read more in Web App Manifest

Desktop

Desktop Screenshot
Serve images in next-gen formats Potential savings of 178 KB
Image formats like JPEG 2000, JPEG XR, and WebP often provide better compression than PNG or JPEG, which means faster downloads and less data consumption
Does not use HTTPS 17 insecure requests found
All sites should be protected with HTTPS, even ones that don't handle sensitive data. HTTPS prevents intruders from tampering with or passively listening in on the communications between your app and your users, and is a prerequisite for HTTP/2 and many new web platform APIs
Server response times are low (TTFB) Root document took 130 ms
Time To First Byte identifies the time at which your server sends a response
Eliminate render-blocking resources Potential savings of 90 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles
Efficiently encode images Potential savings of 18 KB
Optimized images load faster and consume less cellular data
Total Blocking Time 0 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
JavaScript execution time 0.0 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
Server Backend Latencies 0 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 218 KB
Serve images that are appropriately-sized to save cellular data and improve load time
Speed Index 0.4 s
Speed Index shows how quickly the contents of a page are visibly populated
First CPU Idle 0.4 s
First CPU Idle marks the first time at which the page's main thread is quiet enough to handle input. [Learn more](https://web.dev/first-cpu-idle).
Avoids enormous network payloads Total size was 475 KB
Large network payloads cost users real money and are highly correlated with long load times
Minimizes main-thread work 1.0 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
First Contentful Paint 0.4 s
First Contentful Paint marks the time at which the first text or image is painted
Avoid chaining critical requests 2 chains found
The Critical Request Chains below show you what resources are loaded with a high priority. Consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load
Avoids an excessive DOM size 353 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)
First Meaningful Paint 0.4 s
First Meaningful Paint measures when the primary content of a page is visible
Keep request counts low and transfer sizes small 30 requests • 475 KB
To set budgets for the quantity and size of page resources, add a budget.json file
Serve static assets with an efficient cache policy 17 resources found
A long cache lifetime can speed up repeat visits to your page
Max Potential First Input Delay 20 ms
The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task
Time to Interactive 0.4 s
Time to interactive is the amount of time it takes for the page to become fully interactive
Network Round Trip Times 0 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
Estimated Input Latency 10 ms
Estimated Input Latency is an estimate of how long your app takes to respond to user input, in milliseconds, during the busiest 5s window of page load. If your latency is higher than 50 ms, users may perceive your app as laggy

Mobile

Mobile Screenshot
Server response times are low (TTFB) Root document took 100 ms
Time To First Byte identifies the time at which your server sends a response
Eliminate render-blocking resources Potential savings of 130 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles
Efficiently encode images Potential savings of 18 KB
Optimized images load faster and consume less cellular data
Total Blocking Time 0 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
JavaScript execution time 0.0 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
Server Backend Latencies 0 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 103 KB
Serve images that are appropriately-sized to save cellular data and improve load time
Speed Index 1.1 s
Speed Index shows how quickly the contents of a page are visibly populated
First CPU Idle 1.1 s
First CPU Idle marks the first time at which the page's main thread is quiet enough to handle input. [Learn more](https://web.dev/first-cpu-idle).
Avoids enormous network payloads Total size was 475 KB
Large network payloads cost users real money and are highly correlated with long load times
Minimize main-thread work 3.9 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
First Contentful Paint 1.1 s
First Contentful Paint marks the time at which the first text or image is painted
Avoid chaining critical requests 2 chains found
The Critical Request Chains below show you what resources are loaded with a high priority. Consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load
Avoids an excessive DOM size 353 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)
First Meaningful Paint 1.1 s
First Meaningful Paint measures when the primary content of a page is visible
Keep request counts low and transfer sizes small 30 requests • 475 KB
To set budgets for the quantity and size of page resources, add a budget.json file
Serve static assets with an efficient cache policy 17 resources found
A long cache lifetime can speed up repeat visits to your page
Max Potential First Input Delay 50 ms
The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task
Time to Interactive 1.1 s
Time to interactive is the amount of time it takes for the page to become fully interactive
Network Round Trip Times 0 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
Estimated Input Latency 10 ms
Estimated Input Latency is an estimate of how long your app takes to respond to user input, in milliseconds, during the busiest 5s window of page load. If your latency is higher than 50 ms, users may perceive your app as laggy
First Contentful Paint (3G) 2175 ms
First Contentful Paint 3G marks the time at which the first text or image is painted while on a 3G network
Tap targets are not sized appropriately 78% appropriately sized tap targets
Interactive elements like buttons and links should be large enough (48x48px), and have enough space around them, to be easy enough to tap without overlapping onto other elements
Document uses legible font sizes 99.62% 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
Serve images in next-gen formats Potential savings of 178 KB
Image formats like JPEG 2000, JPEG XR, and WebP often provide better compression than PNG or JPEG, which means faster downloads and less data consumption
Does not use HTTPS 17 insecure requests found
All sites should be protected with HTTPS, even ones that don't handle sensitive data. HTTPS prevents intruders from tampering with or passively listening in on the communications between your app and your users, and is a prerequisite for HTTP/2 and many new web platform APIs

Speed And Optimization Tips

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Alexa Rank

0

Local Rank: / Users: / PageViews:

Global Rank

Information Server

Response Header HTTP headers carry information about the client browser, the requested page and the server
HTTP/1.1 200 OK
Date: Wed, 01 Jan 2020 08:46:26 GMT
Server: Apache/2.4.7
Content-Location: home.html
Vary: negotiate,accept-language,Accept-Encoding
TCN: choice
Access-Control-Allow-Origin: (null)
Accept-Ranges: bytes
Content-Encoding: gzip
Cache-Control: max-age=0
Expires: Wed, 01 Jan 2020 08:46:26 GMT
Content-Length: 15446
Content-Type: text/html
Content-Language: en
DNS Records DNS Resource Records associated with a hostname
View DNS Records

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