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87 python.org Last Updated: 9 months

Success 70% of passed verification steps

Warning 7% of total warning

Errors 23% of total errors, require fast action

Mobile

Performance Desktop Score 97%

Best Practices Desktop Score 92%

SEO Desktop Score 90%

Progressive Web App Desktop Score 58%

Performance Mobile Score 81%

Best Practices Mobile Score 85%

SEO Mobile Score 90%

Progressive Web App Mobile Score 59%

Page Authority Authority 72%

Domain Authority Domain Authority 89%

Moz Rank 7.2/10

Bounce Rate Rate 0%

Charset Encoding

Great, language/character encoding is specified: UTF-8

Title Tag 21 Characters

WELCOME TO PYTHON.ORG

Meta Description 52 Characters

The official home of the Python Programming Language

Effective URL 22 Characters

https://www.python.org

Excerpt Page content

Welcome to Python.org Notice: While Javascript is not essential for this website, your interactio...

Meta Keywords 1 Detected

Python programming language object oriented web--- open source software license documentation download community

Keywords Cloud Density

python56 more11 events11 community11 news11 software7 docs7 pycon6 other6 print6

Keyword Consistency Keyword density is one of the main terms in SEO

Keyword	Freq	Title	Desc	Domain	H1	H2
python	56
more	11
events	11
community	11
news	11
software	7
docs	7
pycon	6
other	6
print	6

Google Preview Your look like this in google search result

WELCOME TO PYTHON.ORG

https://www.python.org

The official home of the Python Programming Language

Robots.txt File Detected

http://python.org/robots.txt

Sitemap.xml File No Found

http://python.org/sitemap.xml

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: 2019-02-25 / 1 year

Create on: 1995-03-27 / 25 years

Expires on: 2020-03-28 / 4 months 17 days

Gandi SAS ,US

Registrar Whois Server: whois.gandi.net

Registrar URL: http://www.gandi.net

Nameservers

NS3.P11.DYNECT.NET

NS1.P11.DYNECT.NET

NS2.P11.DYNECT.NET

NS4.P11.DYNECT.NET

Page Size Code & Text Ratio

Document Size: ~48.5 KB

Code Size: ~31.46 KB

Text Size: ~17.04 KB Ratio: 35.13%

Estimation Traffic and Earnings

Only Registered Users

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Technologies

Nginx

Web Servers

Varnish

Cache Tools

PWA - Manifest

Manifest is not valid

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

Desktop

Serve static assets with an efficient cache policy 14 resources found

A long cache lifetime can speed up repeat visits to your page

Max Potential First Input Delay 40 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

Links do not have descriptive text 6 links found

Descriptive link text helps search engines understand your content

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

Remove unused CSS Potential savings of 99 KB

Remove dead rules from stylesheets and defer the loading of CSS not used for above-the-fold content to reduce unnecessary bytes consumed by network activity

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 290 ms

Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles

Enable text compression Potential savings of 81 KB

Text-based resources should be served with compression (gzip, deflate or brotli) to minimize total network bytes

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

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 0.2 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

Speed Index 0.9 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 492 KB

Large network payloads cost users real money and are highly correlated with long load times

Minimizes main-thread work 0.7 s

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this

First Contentful Paint 0.9 s

First Contentful Paint marks the time at which the first text or image is painted

Includes front-end JavaScript libraries with known security vulnerabilities 3 vulnerabilities detected

Some third-party scripts may contain known security vulnerabilities that are easily identified and exploited by attackers

Avoid chaining critical requests 13 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 688 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 • 506 KB

To set budgets for the quantity and size of page resources, add a budget.json file

Mobile

Avoid chaining critical requests 13 chains found

Avoids an excessive DOM size 665 elements

First Meaningful Paint 3.9 s

First Meaningful Paint measures when the primary content of a page is visible

Keep request counts low and transfer sizes small 24 requests • 500 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 14 resources found

A long cache lifetime can speed up repeat visits to your page

Max Potential First Input Delay 90 ms

The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task

Time to Interactive 4.2 s

Time to interactive is the amount of time it takes for the page to become fully interactive

Links do not have descriptive text 6 links found

Descriptive link text helps search engines understand your content

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

First Contentful Paint (3G) 7665 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 96% 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 98.67% 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

Remove unused CSS Potential savings of 100 KB

Remove dead rules from stylesheets and defer the loading of CSS not used for above-the-fold content to reduce unnecessary bytes consumed by network activity

Server response times are low (TTFB) Root document took 30 ms

Time To First Byte identifies the time at which your server sends a response

Eliminate render-blocking resources Potential savings of 690 ms

Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles

Enable text compression Potential savings of 81 KB

Text-based resources should be served with compression (gzip, deflate or brotli) to minimize total network bytes

Minimize third-party usage Third-party code blocked the main thread for 120 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

Total Blocking Time 50 ms

Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.

JavaScript execution time 0.5 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

Speed Index 3.4 s

Speed Index shows how quickly the contents of a page are visibly populated

First CPU Idle 3.9 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 487 KB

Large network payloads cost users real money and are highly correlated with long load times

Minimizes main-thread work 1.3 s

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this

First Contentful Paint 3.4 s

First Contentful Paint marks the time at which the first text or image is painted

Includes front-end JavaScript libraries with known security vulnerabilities 3 vulnerabilities detected

Some third-party scripts may contain known security vulnerabilities that are easily identified and exploited by attackers

Speed And Optimization Tips

Only Registered Users

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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
Connection: keep-alive
Content-Length: 49660
Server: nginx
Content-Type: text/html; charset=utf-8
X-Frame-Options: DENY
Via: 1.1 vegur
Via: 1.1 varnish
Accept-Ranges: bytes
Date: Tue, 26 Nov 2019 13:04:49 GMT
Via: 1.1 varnish
Age: 649
X-Served-By: cache-iad2146-IAD, cache-lga21941-LGA
X-Cache: HIT, HIT
X-Cache-Hits: 2, 1
X-Timer: S1574773490.851894,VS0,VE12
Vary: Cookie
Strict-Transport-Security: max-age=63072000; includeSubDomains

DNS Records DNS Resource Records associated with a hostname

View DNS Records

Type	Name	Value	Class	TTL
A	python.org	45.55.99.72	IN	7188
NS	python.org	ns3.p11.dynect.net	IN	7188
NS	python.org	ns4.p11.dynect.net	IN	7188
NS	python.org	ns2.p11.dynect.net	IN	7188
NS	python.org	ns1.p11.dynect.net	IN	7188
MX	python.org	mail.python.org	IN	7188
TXT	python.org	_globalsign-domain-verification=MK_ZKmss4D_DdzGOsssHxxBOK6hJc6LGycFvNOESdZ	IN	3587
TXT	python.org	google-site-verification=w3b8mU3wU6cZ8uSrj3E_5f1frPejJskDpSp_nMWJ99o	IN	3587
TXT	python.org	v=spf1 mx a:mail.wooz.org ip4:188.166.95.178/32 ip6:2a03:b0c0:2:d0::71:1 include:stspg-customer.com include:_spf.google.com include:mailgun.org ~all	IN	3587
TXT	python.org	status-page-domain-verification=9y2klhzbxsgk	IN	3587
TXT	python.org	888acb5757da46ad83b7e341ec544c64	IN	3587
TXT	python.org	google-site-verification=QALZObrGl2OVG8lWUE40uVSMCAka316yADn9ZfCU5OA	IN	3587
TXT	python.org	google-site-verification=dqhMiMzpbkSyEhgjGKyEOMlEg2tF0MSHD7UN-MYfD-M	IN	3587

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87 python.org Last Updated: 9 months

Desktop

Mobile

Estimation Traffic and Earnings

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Technologies

Nginx

Varnish

PWA - Manifest

Desktop

Mobile

Speed And Optimization Tips

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Alexa Rank

0

Information Server

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