pythontutor.com Website Information

Daily Unique Visits: 18,552

Daily Page Views: 111,312

Income Per Day: $223

Estimated Value: $160,560

pythontutor.com is registered under .COM top-level domain. Please check other sites in .COM zone.

No name server records were found.

and is probably hosted by LEASEWEB-USA-SFO-12 - Leaseweb USA, Inc., US. See the full list of other websites hosted by LEASEWEB-USA-SFO-12 - Leaseweb USA, Inc., US.

The highest website pythontutor.com position in Alexa rank database was 72259 and the lowest rank position was 165514. Current position of pythontutor.com in Alexa rank database is 77307.

Desktop speed score of pythontutor.com (83/100) is better than the results of 76.15% of other sites and shows that the page is performing great on desktop computers.

Mobile usability score of pythontutor.com (65/100) is better than the results of 13.11% of other sites and means that the page is not mobile-friendly.

Mobile speed score of pythontutor.com (64/100) is better than the results of 64.03% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

pythontutor.com Alexa Rank

The traffic rank is based on three months of aggregated historical traffic data from millions of Alexa Toolbar users and is a combined measure of page views and users.

pythontutor.com whois

WHOIS gives you the ability to lookup any generic domains to find out the registered domain holder. WHOIS database are provided for information purposes only. It allows the public to check whether a specific domain name is still available or not and to obtain information related to the registration records of existing domain names.

Domain Name: PYTHONTUTOR.COM
Registry Domain ID: 1614267701_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.namecheap.com
Registrar URL: http://www.namecheap.com
Updated Date: 2021-08-20T22:47:29Z
Creation Date: 2010-09-04T14:35:01Z
Registry Expiry Date: 2030-09-04T14:35:01Z
Registrar: NameCheap, Inc.
Registrar IANA ID: 1068
Registrar Abuse Contact Email: abuse@namecheap.com
Registrar Abuse Contact Phone: +1.6613102107
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Server: NS1.US.OPALSTACK.COM
Name Server: NS2.US.OPALSTACK.COM
Name Server: NS3.US.OPALSTACK.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2024-10-08T14:50:21Z

pythontutor.com server information

Servers Location

pythontutor.com desktop page speed rank

Last tested: 2018-07-04

Desktop Speed Medium

83/100

pythontutor.com Desktop Speed Test Quick Summary

priority - 10Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 1 blocking script resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

http://pythontutor.com/build/index.bundle.js?d9c30adca8

priority - 8Minify JavaScript

Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.

Minify JavaScript for the following resources to reduce their size by 77.3KiB (18% reduction).

Minifying http://pythontutor.com/build/index.bundle.js?d9c30adca8 could save 77.3KiB (18% reduction) after compression.

priority - 1Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

https://static.doubleclick.net/instream/ad_status.js (15 minutes)
http://www.google-analytics.com/ga.js (2 hours)

pythontutor.com Desktop Resource Breakdown

Total Resources	15
Number of Hosts	7
Static Resources	6
JavaScript Resources	7
CSS Resources	1

pythontutor.com mobile page speed rank

Last tested: 2018-04-20

Mobile Speed Bad

64/100

pythontutor.com Mobile Speed Test Quick Summary

priority - 40Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 1 blocking script resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

http://pythontutor.com/build/index.bundle.js?bafd453ce8

priority - 8Prioritize visible content

Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.

The entire HTML response was not sufficient to render the above-the-fold content. This usually indicates that additional resources, loaded after HTML parsing, were required to render above-the-fold content. Prioritize visible content that is needed for rendering above-the-fold by including it directly in the HTML response.

Only about 48% of the final above-the-fold content could be rendered with the full HTML response.

Click to see the screenshot with only the HTML response:

priority - 8Minify JavaScript

Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.

Minify JavaScript for the following resources to reduce their size by 75.5KiB (18% reduction).

Minifying http://pythontutor.com/build/index.bundle.js?bafd453ce8 could save 75.5KiB (18% reduction) after compression.

priority - 1Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

https://static.doubleclick.net/instream/ad_status.js (15 minutes)
http://www.google-analytics.com/ga.js (2 hours)

pythontutor.com Mobile Resource Breakdown

Total Resources	16
Number of Hosts	8
Static Resources	7
JavaScript Resources	7
CSS Resources	1

pythontutor.com mobile page usability

Last tested: 2018-04-20

Mobile Usability Medium

65/100

pythontutor.com Mobile Usability Test Quick Summary

priority - 28Use legible font sizes

The following text on your page renders in a way that may be difficult for some of your visitors to read. Use legible font sizes to provide a better user experience.

The following text fragments have a small font size. Increase the font size to make them more legible.

Learn Python,…ript, and Ruby and 1 others render only 8 pixels tall (20 CSS pixels).

JavaScript Tutor and 8 others render only 6 pixels tall (16 CSS pixels).

Hit the “Get l…ng. Watch this and 15 others render only 6 pixels tall (16 CSS pixels).

Philip Guo and 1 others render only 6 pixels tall (16 CSS pixels).

over 3.5 milli…180 countries renders only 6 pixels tall (16 CSS pixels).

Python Tutor -…e introduction renders only 7 pixels tall (18 CSS pixels).

Your browser d…ats available. renders only 5 pixels tall (14 CSS pixels).

Click here to…t HTML5 video. renders only 5 pixels tall (14 CSS pixels).

Python 2.7 renders only 5 pixels tall (13 CSS pixels).

1 and 8 others render only 6 pixels tall (15 CSS pixels).

return f + listSum(rest) and 7 others render only 6 pixels tall (15 CSS pixels).

Edit this code and 1 others render only 5 pixels tall (13 CSS pixels).

line that has just executed renders only 5 pixels tall (12 CSS pixels).

next line to execute renders only 5 pixels tall (12 CSS pixels).

Forward > and 1 others render only 5 pixels tall (13 CSS pixels).

Step 11 of 22 renders only 5 pixels tall (13 CSS pixels).

small donation and 2 others render only 4 pixels tall (11 CSS pixels).

. Support with a and 2 others render only 4 pixels tall (11 CSS pixels).

Frames renders only 5 pixels tall (13 CSS pixels).

Global frame and 2 others render only 5 pixels tall (13 CSS pixels).

listSum and 7 others render only 5 pixels tall (13 CSS pixels).

None and 5 others render only 5 pixels tall (13 CSS pixels).

Objects renders only 5 pixels tall (13 CSS pixels).

function and 3 others render only 4 pixels tall (11 CSS pixels).

listSum(numbers) renders only 5 pixels tall (13 CSS pixels).

0 and 5 others render only 4 pixels tall (11 CSS pixels).

priority - 17Size tap targets appropriately

Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.

The following tap targets are close to other nearby tap targets and may need additional spacing around them.

The tap target <button class="ytp-watch-late…ton ytp-button"></button> and 1 others are close to other tap targets.

The tap target <div id="codAndNav" class="ui-resizable">Python 2.7…mall donation.</div> is close to 2 other tap targets.

The tap target <td id="lineNo1" class="lineNo togetherjsCloneClick">1</td> and 8 others are close to other tap targets.

The tap target <td id="v1__cod1" class="cod togetherjsCloneClick">def listSum(numbers):</td> and 8 others are close to other tap targets.

The tap target <a id="editBtn" href="visualize.html…m(myList)&py=2">Edit this code</a> is close to 1 other tap targets.

The tap target <button id="jmpStepBack" type="button">< Back</button> and 1 others are close to other tap targets.

The tap target <a href="http://pythontutor.com">Python Tutor</a> and 2 others are close to other tap targets.

The tap target <div class="_jsPlumb_endpo…e ui-droppable"></div> and 15 others are close to other tap targets.

The tap target <circle> and 28 others are close to other tap targets.

priority - 10Configure the viewport

Your page does not have a viewport specified. This causes mobile devices to render your page as it would appear on a desktop browser, scaling it down to fit on a mobile screen. Configure a viewport to allow your page to render properly on all devices.

pythontutor.com HTML validation

Errors

Almost standards mode doctype. Expected “<!DOCTYPE html>”.

Line: 1 Column: 1 - 121
"...<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html..."

The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.

Line: 85 Column: 1 - 113
"...) </div> <iframe width="720" height="480" src="https://www.youtube.com/embed/McYTtgl8ogI" frameborder="0" allowfullscreen></ifra..." Line: 121 Column: 1 - 112
"...a>: </p> <iframe width="480" height="360" src="http://www.youtube.com/embed/oDY7ScMPtqI" frameborder="0" allowfullscreen></ifra..."

The “tt” element is obsolete. Use CSS instead.

Line: 132 Column: 25 - 28
"...using the <tt>for-el..."

Element “img” is missing required attribute “src”.

Line: 160 Column: 1 - 91
"...ms.com/"> <img id="cp-thumbnail" style="width: 275px; border: 1px solid #aaa; margin-bottom: 10px;"/> </a> ..."

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

Line: 160 Column: 1 - 91
"...ms.com/"> <img id="cp-thumbnail" style="width: 275px; border: 1px solid #aaa; margin-bottom: 10px;"/> </a> ..."

Self-closing syntax (“/>”) used on a non-void HTML element. Ignoring the slash and treating as a start tag.

Line: 172 Column: 3 - 7
"...: <ul> <li/>Free, ..." Line: 175 Column: 3 - 7
"...ub</a> <li/>View <..." Line: 179 Column: 2 - 6
"...online. <li/>Main t..."

No “p” element in scope but a “p” end tag seen.

Line: 189 Column: 1 - 4
"...nd </ul> </p> </di..."

Warnings

This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.

Line: 2 Column: 122 - 43
"...onal.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <!--..."

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pythontutor.com Ping

Ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network. It measures the round-trip time for messages sent from the originating host to a destination computer that are echoed back to the source.

pythontutor.com TRACEROUTE

Traceroute is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network. The history of the route is recorded as the round-trip times of the packets received from each successive host (remote node) in the route (path); the sum of the mean times in each hop is a measure of the total time spent to establish the connection. Traceroute proceeds unless all (three) sent packets are lost more than twice, then the connection is lost and the route cannot be evaluated.

PYTHONTUTOR.COM Online Python Tutor - visualize, debug, get AI help for Python, Java, C, C++, and JavaScript

pythontutor.com Website Information

Advertisement

pythontutor.com Alexa Rank

pythontutor.com whois

pythontutor.com server information

Servers Location

pythontutor.com desktop page speed rank

pythontutor.com Desktop Speed Test Quick Summary

priority - 10Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 1 blocking script resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

priority - 8Minify JavaScript

Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.

Minify JavaScript for the following resources to reduce their size by 77.3KiB (18% reduction).

priority - 1Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

pythontutor.com Desktop Resource Breakdown

pythontutor.com mobile page speed rank

pythontutor.com Mobile Speed Test Quick Summary

priority - 40Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 1 blocking script resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

priority - 8Prioritize visible content

Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.

priority - 8Minify JavaScript

Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.

Minify JavaScript for the following resources to reduce their size by 75.5KiB (18% reduction).

priority - 1Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

pythontutor.com Mobile Resource Breakdown

pythontutor.com mobile page usability

pythontutor.com Mobile Usability Test Quick Summary

priority - 28Use legible font sizes

The following text on your page renders in a way that may be difficult for some of your visitors to read. Use legible font sizes to provide a better user experience.

The following text fragments have a small font size. Increase the font size to make them more legible.

priority - 17Size tap targets appropriately

Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.

The following tap targets are close to other nearby tap targets and may need additional spacing around them.

priority - 10Configure the viewport

Your page does not have a viewport specified. This causes mobile devices to render your page as it would appear on a desktop browser, scaling it down to fit on a mobile screen. Configure a viewport to allow your page to render properly on all devices.

pythontutor.com HTML validation

Errors

Almost standards mode doctype. Expected “<!DOCTYPE html>”.

The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.

The “tt” element is obsolete. Use CSS instead.

Element “img” is missing required attribute “src”.

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

Self-closing syntax (“/>”) used on a non-void HTML element. Ignoring the slash and treating as a start tag.

No “p” element in scope but a “p” end tag seen.

Warnings

This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.

pythontutor.com similar domains

pythontutor.com Ping

pythontutor.com TRACEROUTE