s4a.cat Website Information

Daily Unique Visits: 1,416

Daily Page Views: 2,832

Income Per Day: $9

Estimated Value: $2,160

s4a.cat is registered under .CAT top-level domain. Please check other sites in .CAT zone.

No name server records were found.

and is probably hosted by OVH SAS. See the full list of other websites hosted by OVH SAS.

The highest website s4a.cat position in Alexa rank database was 44171 and the lowest rank position was 988552. Current position of s4a.cat in Alexa rank database is 506406.

Desktop speed score of s4a.cat (78/100) is better than the results of 65.98% of other sites and shows that the page desktop performance can be improved.

Mobile usability score of s4a.cat (86/100) is better than the results of 27.73% of other sites and means that the page is mobile-friendly.

Mobile speed score of s4a.cat (66/100) is better than the results of 68.49% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

s4a.cat 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.

s4a.cat 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.

s4a.cat server information

Servers Location

s4a.cat desktop page speed rank

Last tested: 2017-05-28

Desktop Speed Medium

78/100

s4a.cat Desktop Speed Test Quick Summary

priority - 13Leverage 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://s4a.cat/css/main.css (10 minutes)
http://s4a.cat/css/normalize.min.css (10 minutes)
http://s4a.cat/examples/button_led.png (10 minutes)
http://s4a.cat/examples/photoresistor_led.png (10 minutes)
http://s4a.cat/examples/rgb_led.png (10 minutes)
http://s4a.cat/examples/switch_led.png (10 minutes)
http://s4a.cat/img/3steps.png (10 minutes)
http://s4a.cat/img/balloon.png (10 minutes)
http://s4a.cat/img/bernat.png (10 minutes)
http://s4a.cat/img/blocks.png (10 minutes)
http://s4a.cat/img/citilab.png (10 minutes)
http://s4a.cat/img/donate-en.png (10 minutes)
http://s4a.cat/img/hi-s4a-qr.png (10 minutes)
http://s4a.cat/img/joan.png (10 minutes)
http://s4a.cat/img/jordi.png (10 minutes)
http://s4a.cat/img/jose.png (10 minutes)
http://s4a.cat/img/logo.png (10 minutes)
http://s4a.cat/img/marina.png (10 minutes)
http://s4a.cat/img/shot01.png (10 minutes)
http://s4a.cat/img/shot02.jpg (10 minutes)
http://s4a.cat/img/victor.png (10 minutes)
http://s4a.cat/js/main.js (10 minutes)
http://s4a.cat/js/vendor/jquery-1.10.1.min.js (10 minutes)
http://s4a.cat/js/vendor/modernizr-2.6.2-respond-1.1.0.min.js (10 minutes)
http://s4a.cat/js/vendor/portamento.js (10 minutes)
https://static.doubleclick.net/instream/ad_status.js (15 minutes)
http://www.google-analytics.com/ga.js (2 hours)

priority - 7Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 69.5KiB (26% reduction).

Compressing http://s4a.cat/img/shot01.png could save 19.1KiB (31% reduction).
Compressing http://s4a.cat/img/3steps.png could save 11.9KiB (36% reduction).
Compressing http://s4a.cat/examples/switch_led.png could save 7.3KiB (24% reduction).
Compressing http://s4a.cat/examples/photoresistor_led.png could save 7.1KiB (23% reduction).
Compressing http://s4a.cat/examples/button_led.png could save 7KiB (23% reduction).
Compressing http://s4a.cat/examples/rgb_led.png could save 5.9KiB (19% reduction).
Compressing http://s4a.cat/img/blocks.png could save 4.4KiB (23% reduction).
Compressing http://s4a.cat/img/logo.png could save 2.9KiB (22% reduction).
Compressing http://s4a.cat/img/shot02.jpg could save 1.9KiB (13% reduction).
Compressing http://s4a.cat/img/donate-en.png could save 1.3KiB (27% reduction).
Compressing http://s4a.cat/img/citilab.png could save 834B (28% reduction).

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

Your page has 2 blocking script resources and 2 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

http://s4a.cat/js/vendor/modernizr-2.6.2-respond-1.1.0.min.js
http://s4a.cat/js/vendor/jquery-1.10.1.min.js

Optimize CSS Delivery of the following:

http://s4a.cat/css/normalize.min.css
http://s4a.cat/css/main.css

priority - 0Minify 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 1.8KiB (59% reduction).

Minifying http://s4a.cat/js/vendor/portamento.js could save 1.8KiB (59% reduction) after compression.

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 617B (31% reduction).

Minifying http://s4a.cat/css/main.css could save 617B (31% reduction) after compression.

s4a.cat Desktop Resource Breakdown

Total Resources	43
Number of Hosts	9
Static Resources	31
JavaScript Resources	10
CSS Resources	3

s4a.cat mobile page speed rank

Last tested: 2017-05-28

Mobile Speed Medium

66/100

s4a.cat Mobile Speed Test Quick Summary

priority - 24Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 2 blocking script resources and 2 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

http://s4a.cat/js/vendor/modernizr-2.6.2-respond-1.1.0.min.js
http://s4a.cat/js/vendor/jquery-1.10.1.min.js

Optimize CSS Delivery of the following:

http://s4a.cat/css/normalize.min.css
http://s4a.cat/css/main.css

priority - 20Leverage 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:

priority - 7Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 69.5KiB (26% reduction).

priority - 0Minify 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 1.8KiB (59% reduction).

Minifying http://s4a.cat/js/vendor/portamento.js could save 1.8KiB (59% reduction) after compression.

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 617B (31% reduction).

Minifying http://s4a.cat/css/main.css could save 617B (31% reduction) after compression.

s4a.cat Mobile Resource Breakdown

Total Resources	44
Number of Hosts	10
Static Resources	32
JavaScript Resources	10
CSS Resources	3

s4a.cat mobile page usability

Last tested: 2017-05-28

Mobile Usability Good

86/100

s4a.cat Mobile Usability Test Quick Summary

priority - 14Size content to viewport

The page content is too wide for the viewport, forcing the user to scroll horizontally. Size the page content to the viewport to provide a better user experience.

The page content is 603 CSS pixels wide, but the viewport is only 412 CSS pixels wide. The following elements fall outside the viewport:

The element <img src="img/shot01.png"> falls outside the viewport.
The element <img src="img/blocks.png"> falls outside the viewport.
The element <img src="examples/button_led.png"> falls outside the viewport.
The element <img src="examples/rgb_led.png"> falls outside the viewport.
The element <img src="examples/switch_led.png"> falls outside the viewport.
The element <img src="examples/photoresistor_led.png"> falls outside the viewport.
The element <iframe src="http://www.you…layer_embedded"> falls outside the viewport.
The element <iframe src="http://www.you…yer_detailpage"> falls outside the viewport.
The element <img src="img/3steps.png" class="steps"> falls outside the viewport.

priority - 0Size 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="index_ca.html">CA</a> and 3 others are close to other tap targets.

s4a.cat HTML validation

Errors

The “profile” attribute on the “head” element is obsolete. To declare which “meta” terms are used in the document, instead register the names as meta extensions. To trigger specific UA behaviors, use a “link” element instead.

Line: 6 Column: 61 - 50
"...[endif]--> <head profile="http://www.w3.org/2005/10/profile"> <..."

A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.

Line: 8 Column: 5 - 66
"...f-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <..."

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

Line: 27 Column: 17 - 54
"... <img class="logo" src="img/logo.png"/> ..." Line: 28 Column: 17 - 60
"... <img class="citilab" src="img/citilab.png"/> ..." Line: 70 Column: 25 - 51
"... <img src="img/shot01.png"/> ..." Line: 74 Column: 28 - 53
"... <p><img src="img/blocks.png"></p> ..." Line: 130 Column: 28 - 75
"... <p><img src="examples/button_led.png" width="580"/></p> ..." Line: 134 Column: 28 - 60
"... <p><img src="examples/rgb_led.png"/></p> ..." Line: 138 Column: 28 - 75
"... <p><img src="examples/switch_led.png" width="580"/></p> ..." Line: 142 Column: 28 - 82
"... <p><img src="examples/photoresistor_led.png" width="580"/></p> ..." Line: 186 Column: 28 - 57
"... <p><img src="img/hi-s4a-qr.png"/></p> ..." Line: 191 Column: 119 - 145
"...sors <br/><img src="img/shot02.jpg"/></li> ..." Line: 293 Column: 28 - 68
"... <p><img class="steps" src="img/3steps.png"/></p> ..." Line: 409 Column: 25 - 66
"... <img class="avatar" src="img/marina.png"/> ..." Line: 415 Column: 25 - 66
"... <img class="avatar" src="img/victor.png"/> ..." Line: 421 Column: 25 - 64
"... <img class="avatar" src="img/joan.png"/> ..." Line: 427 Column: 25 - 64
"... <img class="avatar" src="img/jose.png"/> ..." Line: 433 Column: 25 - 66
"... <img class="avatar" src="img/bernat.png"/> ..." Line: 439 Column: 25 - 65
"... <img class="avatar" src="img/jordi.png"/> ..." Line: 448 Column: 21 - 64
"... <img class="balloon" src="img/balloon.png"/> ..." Line: 513 Column: 61 - 101
"...tilab.eu"><img src="img/citilab.png" class="logo"/></a> ..."

End tag “h4” seen, but there were open elements.

Line: 96 Column: 38 - 42
"...ate to S4A</h4> ..."

Attribute “border” not allowed on element “input” at this point.

Line: 101 Column: 25 - 118
"... <input type="image" src="img/donate-en.png" border="0" name="submit" alt="Donate via PayPal."> ..." Line: 506 Column: 17 - 110
"... <input type="image" src="img/donate-en.png" border="0" name="submit" alt="Donate via PayPal."> ..."

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

Line: 152 Column: 28 - 163
"... <p><iframe width="580" height="327" src="http://www.youtube.com/embed/IzGGv9xkkRs?feature=player_embedded" frameborder="0" allowfullscreen></ifra..." Line: 156 Column: 28 - 165
"... <p><iframe width="580" height="327" src="http://www.youtube.com/embed/RJAgSUIf12U?feature=player_detailpage" frameborder="0" allowfullscreen></ifra..."

Element “h3” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)

Line: 230 Column: 29 - 32
"... <h3>S4A:</..." Line: 247 Column: 29 - 32
"... <h3>Firmwa..."

Element “ul” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)

Line: 238 Column: 29 - 32
"... <ul> ..."

Stray end tag “section”.

Line: 370 Column: 21 - 30
"... </section> ..."

Warnings

The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.

Line: 102 Column: 25 - 126
"... <img alt="" border="0" src="https://www.paypalobjects.com/es_ES/i/scr/pixel.gif" width="1" height="1"> ..." Line: 507 Column: 17 - 118
"... <img alt="" border="0" src="https://www.paypalobjects.com/es_ES/i/scr/pixel.gif" width="1" height="1"> ..."

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

Line: 5 Column: 23 - 43
"...E 8]><!--> <html class="no-js"> <!--<..."

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s4a.cat 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.

s4a.cat 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.

S4A.CAT S4A

s4a.cat Website Information

Advertisement

s4a.cat Alexa Rank

s4a.cat whois

s4a.cat server information

Servers Location

s4a.cat desktop page speed rank

s4a.cat Desktop Speed Test Quick Summary

priority - 13Leverage 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:

priority - 7Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 69.5KiB (26% reduction).

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

Your page has 2 blocking script resources and 2 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

Optimize CSS Delivery of the following:

priority - 0Minify 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 1.8KiB (59% 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 617B (31% reduction).

s4a.cat Desktop Resource Breakdown

s4a.cat mobile page speed rank

s4a.cat Mobile Speed Test Quick Summary

priority - 24Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 2 blocking script resources and 2 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

Optimize CSS Delivery of the following:

priority - 20Leverage 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:

priority - 7Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 69.5KiB (26% reduction).

priority - 0Minify 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 1.8KiB (59% 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 617B (31% reduction).

s4a.cat Mobile Resource Breakdown

s4a.cat mobile page usability

s4a.cat Mobile Usability Test Quick Summary

priority - 14Size content to viewport

The page content is too wide for the viewport, forcing the user to scroll horizontally. Size the page content to the viewport to provide a better user experience.

The page content is 603 CSS pixels wide, but the viewport is only 412 CSS pixels wide. The following elements fall outside the viewport:

priority - 0Size 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.

s4a.cat HTML validation

Errors

The “profile” attribute on the “head” element is obsolete. To declare which “meta” terms are used in the document, instead register the names as meta extensions. To trigger specific UA behaviors, use a “link” element instead.

A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.

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

End tag “h4” seen, but there were open elements.

Attribute “border” not allowed on element “input” at this point.

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

Element “h3” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)

Element “ul” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)

Stray end tag “section”.

Warnings

The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.

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

s4a.cat similar domains

s4a.cat Ping

s4a.cat TRACEROUTE