SCRATCHAPIXEL.COM Scratchapixel 4.0, Learn Computer Graphics Programming

scratchapixel.com Website Information

Daily Unique Visits: 22,705

Daily Page Views: 136,230

Income Per Day: $272

Estimated Value: $195,840

scratchapixel.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 NETWORK-SOLUTIONS-HOSTING - Network Solutions, LLC, US. See the full list of other websites hosted by NETWORK-SOLUTIONS-HOSTING - Network Solutions, LLC, US.

The highest website scratchapixel.com position in Alexa rank database was 7816 and the lowest rank position was 966369. Current position of scratchapixel.com in Alexa rank database is 63167.

Desktop speed score of scratchapixel.com (91/100) is better than the results of 90.07% of other sites and shows that the page is performing great on desktop computers.

Mobile usability score of scratchapixel.com (68/100) is better than the results of 19.67% of other sites and means that the page is not mobile-friendly.

Mobile speed score of scratchapixel.com (60/100) is better than the results of 54.7% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

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scratchapixel.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.


scratchapixel.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: SCRATCHAPIXEL.COM
Registry Domain ID: 1175942225_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.networksolutions.com
Registrar URL: http://networksolutions.com
Updated Date: 2021-06-24T08:30:58Z
Creation Date: 2007-08-23T21:22:15Z
Registry Expiry Date: 2023-08-23T21:22:15Z
Registrar: Network Solutions, LLC
Registrar IANA ID: 2
Registrar Abuse Contact Email: abuse@web.com
Registrar Abuse Contact Phone: +1.8003337680
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Server: NS91.WORLDNIC.COM
Name Server: NS92.WORLDNIC.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2022-05-17T11:54:17Z

scratchapixel.com server information

Servers Location

scratchapixel.com desktop page speed rank

Last tested: 2015-12-07


Desktop Speed Good
91/100

scratchapixel.com Desktop Speed Test Quick Summary


priority - 6Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 3 blocking CSS resources. This causes a delay in rendering your page.

Optimize CSS Delivery of the following:

http://scratchapixel.com/css/scratchapixel2.css
http://fonts.googleapis.com/css?family=Noto+Sans
http://fonts.googleapis.com/css?family=Open+Sans:700,400,300

priority - 1Enable compression

Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.

Enable compression for the following resources to reduce their transfer size by 12.8KiB (75% reduction).

Compressing http://scratchapixel.com/ could save 11.5KiB (76% reduction).
Compressing http://scratchapixel.com/css/scratchapixel2.css could save 1.4KiB (70% 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:

http://scratchapixel.com/css/scratchapixel2.css (expiration not specified)
http://www.google-analytics.com/analytics.js (2 hours)

priority - 0Minify HTML

Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.

Minify HTML for the following resources to reduce their size by 2.2KiB (15% reduction).

Minifying http://scratchapixel.com/ could save 2.2KiB (15% reduction).

priority - 0Minify CSS

Compacting CSS code can save many bytes of data and speed up download and parse times.

Minify CSS for the following resources to reduce their size by 964B (49% reduction).

Minifying http://scratchapixel.com/css/scratchapixel2.css could save 964B (49% reduction).

scratchapixel.com Desktop Resource Breakdown

Total Resources9
Number of Hosts4
Static Resources4
JavaScript Resources1
CSS Resources3

scratchapixel.com mobile page speed rank

Last tested: 2019-10-11


Mobile Speed Bad
60/100

scratchapixel.com Mobile Speed Test Quick Summary


priority - 32Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 4 blocking CSS resources. This causes a delay in rendering your page.

Optimize CSS Delivery of the following:

https://fonts.googleapis.com/css?family=Gloria+Hallelujah
https://fonts.googleapis.com/css?family=Noto+Sans
https://fonts.googleapis.com/css?family=Open+Sans:700,400,300
https://www.scratchapixel.com/css/scratchapixel.css

priority - 26Avoid landing page redirects

Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.

Avoid landing page redirects for the following chain of redirected URLs.

http://scratchapixel.com/
http://www.scratchapixel.com/
https://www.scratchapixel.com/

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 7% 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 - 4Reduce server response time

In our test, your server responded in 0.47 seconds.

priority - 2Leverage 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://www.scratchapixel.com/css/scratchapixel.css (expiration not specified)
https://www.scratchapixel.com/sap-icons/arrow-simple-down.svg (expiration not specified)
https://www.google-analytics.com/analytics.js (2 hours)

priority - 0Minify HTML

Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.

Minify HTML for the following resources to reduce their size by 638B (16% reduction).

Minifying https://www.scratchapixel.com/ could save 638B (16% reduction) after compression.

priority - 0Enable compression

Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.

Enable compression for the following resources to reduce their transfer size by 201B (33% reduction).

Compressing https://www.scratchapixel.com/sap-icons/arrow-simple-down.svg could save 201B (33% reduction).

priority - 0Minify CSS

Compacting CSS code can save many bytes of data and speed up download and parse times.

Minify CSS for the following resources to reduce their size by 114B (17% reduction).

Minifying https://www.scratchapixel.com/css/scratchapixel.css could save 114B (17% reduction) after compression.

scratchapixel.com Mobile Resource Breakdown

Total Resources15
Number of Hosts5
Static Resources7
JavaScript Resources1
CSS Resources5

scratchapixel.com mobile page usability

Last tested: 2019-10-11


Mobile Usability Medium
68/100

scratchapixel.com Mobile Usability Test Quick Summary


priority - 22Size 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 <a href="/lessons/mathe…phics/geometry">Geometry</a> and 35 others are close to other tap targets.
The tap target <a href="https://twitte…/Scratchapixel">Twitter</a> is close to 1 other tap targets.

priority - 15Use 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.

Scratchapixel 2.0 renders only 7 pixels tall (18 CSS pixels).

Sign in renders only 6 pixels tall (16 CSS pixels).

32 lessons, 16…++ source code renders only 6 pixels tall (16 CSS pixels).

The Phong Mode…odels and BRDF and 37 others render only 6 pixels tall (16 CSS pixels).
Bias vs Unbias…ssian Roulette and 20 others render only 6 pixels tall (16 CSS pixels).
Contact Us and 4 others render only 5 pixels tall (12 CSS pixels).
@ 2009-2016 Sc…later version. renders only 5 pixels tall (12 CSS pixels).

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.

scratchapixel.com HTML validation

Errors

Stray start tag “html”.

Line: 37 Column: 1 - 6
".../script> <html> <head..."

Start tag “head” seen but an element of the same type was already open.

Line: 38 Column: 1 - 6
"...> <html> <head> <titl..."

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

Line: 99 Column: 3 - 67
"...arrow'> <img style="width: 100%;" src="sap-icons/arrow-simple-down.svg"/> </di..."

Stray start tag “footer”.

Line: 110 Column: 1 - 23
"... </body> <footer class='footer'> <div..."

Warnings

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

Line: 4 Column: 16 - 88
"...TYPE html> <link href="https://fonts.googleapis.com/css?family=Gloria+Hallelujah" rel="stylesheet"> <link..."

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scratchapixel.com Ping

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scratchapixel.com TRACEROUTE

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