Tools & Wizards About Us
centrosanluis.com screenshot

Report Summary

  • 32

    Performance

    Renders faster than
    52% of other websites

  • 79

    Accessibility

    Visual factors better than
    that of 47% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

centrosanluis.com

Formación Profesional y Bachillerato - Centro Privado concertado en Bilbao

Page Load Speed

4.1 sec in total

First Response

180 ms

Resources Loaded

2.9 sec

Page Rendered

1 sec

centrosanluis.com screenshot

About Website

Visit centrosanluis.com now to see the best up-to-date Centro Sanluis content for Spain and also check out these interesting facts you probably never knew about centrosanluis.com

Centro de Estudios de formación concertada Bilbao. Bachillerato, formación Profesional integral, Universitaria y en inserción laboral en Bilbao.

Visit centrosanluis.com

Key Findings

We analyzed Centrosanluis.com page load time and found that the first response time was 180 ms and then it took 3.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

centrosanluis.com performance score

32

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.6 s

14/100

10%

LCP (Largest Contentful Paint)

Value5.4 s

21/100

25%

SI (Speed Index)

Value6.4 s

41/100

10%

TBT (Total Blocking Time)

Value1,170 ms

21/100

30%

CLS (Cumulative Layout Shift)

Value0.044

99/100

15%

TTI (Time to Interactive)

Value17.1 s

4/100

10%

Network Requests Diagram

centrosanluis.com

180 ms

www.centrosanluis.com

567 ms

css

36 ms

bootstrap.min.css

172 ms

font-awesome.min.css

254 ms

Our browser made a total of 110 requests to load all elements on the main page. We found that 84% of them (92 requests) were addressed to the original Centrosanluis.com, 4% (4 requests) were made to Gstatic.com and 4% (4 requests) were made to Upload.wikimedia.org. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Centrosanluis.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 163.7 kB (30%)

Content Size

537.4 kB

After Optimization

373.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Centrosanluis.com main page is 537.4 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Javascripts take 346.3 kB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 162.2 kB

  • Original 186.5 kB
  • After minification 146.3 kB
  • After compression 24.3 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. This page needs HTML code to be minified as it can gain 40.2 kB, which is 22% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 162.2 kB or 87% of the original size.

Image Optimization

-1%

Potential reduce by 19 B

  • Original 3.4 kB
  • After minification 3.4 kB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Centro Sanluis images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 1.4 kB

  • Original 346.3 kB
  • After minification 346.3 kB
  • After compression 344.8 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. This website has mostly compressed JavaScripts.

CSS Optimization

-1%

Potential reduce by 15 B

  • Original 1.3 kB
  • After minification 1.3 kB
  • After compression 1.3 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Centrosanluis.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 59 (60%)

Requests Now

98

After Optimization

39

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 98 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Centro Sanluis. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 43 to 1 for JavaScripts and from 18 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

centrosanluis.com

centrosanluis.com

180 ms

www.centrosanluis.com

www.centrosanluis.com

567 ms

css

css

36 ms

bootstrap.min.css

bootstrap.min.css

172 ms

font-awesome.min.css

font-awesome.min.css

254 ms

style.css

style.css

338 ms

style.css

style.css

258 ms

animate.css

animate.css

259 ms

hs.megamenu.css

hs.megamenu.css

289 ms

hamburgers.min.css

hamburgers.min.css

289 ms

slick.css

slick.css

344 ms

jquery.fancybox.css

jquery.fancybox.css

347 ms

custombox.min.css

custombox.min.css

348 ms

chosen.css

chosen.css

387 ms

jquery-ui.min.css

jquery-ui.min.css

391 ms

styles.multipage-education.css

styles.multipage-education.css

639 ms

custom.css

custom.css

467 ms

cookieconsent.min.css

cookieconsent.min.css

52 ms

api.js

api.js

39 ms

cookieconsent.min.js

cookieconsent.min.js

14 ms

df-messenger.js

df-messenger.js

26 ms

jquery.min.js

jquery.min.js

477 ms

jquery-migrate.min.js

jquery-migrate.min.js

391 ms

popper.min.js

popper.min.js

410 ms

bootstrap.min.js

bootstrap.min.js

421 ms

jquery-ui.core.min.js

jquery-ui.core.min.js

482 ms

datepicker.js

datepicker.js

482 ms

widget.js

widget.js

513 ms

version.js

version.js

522 ms

keycode.js

keycode.js

747 ms

position.js

position.js

748 ms

unique-id.js

unique-id.js

748 ms

safe-active-element.js

safe-active-element.js

749 ms

menu.js

menu.js

749 ms

mouse.js

mouse.js

749 ms

hs.megamenu.js

hs.megamenu.js

750 ms

chosen.jquery.js

chosen.jquery.js

751 ms

slick.js

slick.js

750 ms

jquery.fancybox.min.js

jquery.fancybox.min.js

844 ms

gmaps.min.js

gmaps.min.js

843 ms

custombox.min.js

custombox.min.js

843 ms

jquery.maskedinput.js

jquery.maskedinput.js

843 ms

hs.core.js

hs.core.js

843 ms

hs.tabs.js

hs.tabs.js

745 ms

cookie-consent.js

cookie-consent.js

58 ms

hs.header.js

hs.header.js

777 ms

hs.hamburgers.js

hs.hamburgers.js

778 ms

hs.dropdown.js

hs.dropdown.js

773 ms

hs.select.js

hs.select.js

748 ms

hs.scroll-nav.js

hs.scroll-nav.js

745 ms

hs.sticky-block.js

hs.sticky-block.js

691 ms

hs.go-to.js

hs.go-to.js

768 ms

hs.height-calc.js

hs.height-calc.js

763 ms

hs.carousel.js

hs.carousel.js

763 ms

hs.popup.js

hs.popup.js

723 ms

hs.map.js

hs.map.js

722 ms

hs.modal-window.js

hs.modal-window.js

645 ms

hs.datepicker.js

hs.datepicker.js

725 ms

hs.masked-input.js

hs.masked-input.js

704 ms

jqPaginator.min.js

jqPaginator.min.js

695 ms

32px-Flag_of_Spain_%28Civil%29.svg.png

32px-Flag_of_Spain_%28Civil%29.svg.png

224 ms

logo_sanluis.png

logo_sanluis.png

436 ms

preloader-black.svg

preloader-black.svg

436 ms

estudiafp.jpg

estudiafp.jpg

712 ms

bannerLANBIDE23.png

bannerLANBIDE23.png

1190 ms

Flag_of_the_Basque_Country.svg

Flag_of_the_Basque_Country.svg

272 ms

Flag_of_the_United_Kingdom_%281-2%29.svg

Flag_of_the_United_Kingdom_%281-2%29.svg

348 ms

32px-Flag_of_the_Basque_Country.svg.png

32px-Flag_of_the_Basque_Country.svg.png

348 ms

estudiabachillerato..jpg

estudiabachillerato..jpg

773 ms

FormacionProfesional.jpg

FormacionProfesional.jpg

535 ms

Bachillerato.jpg

Bachillerato.jpg

644 ms

GradoUniversitarioMasteresInformatica.jpg

GradoUniversitarioMasteresInformatica.jpg

768 ms

Aprendizaje.jpg

Aprendizaje.jpg

771 ms

OfertaEducativaCursos.jpg

OfertaEducativaCursos.jpg

771 ms

IMG_20240201_125720.jpg

IMG_20240201_125720.jpg

770 ms

1710341126910.jpg

1710341126910.jpg

1182 ms

IMG_4245(1).jpeg

IMG_4245(1).jpeg

882 ms

foto2.jpg

foto2.jpg

697 ms

2401rapSANLUIS%20(3).JPG

2401rapSANLUIS%20(3).JPG

708 ms

logo-q.jpg

logo-q.jpg

763 ms

logo-iso-9001.jpg

logo-iso-9001.jpg

785 ms

logo-iso-14001.jpg

logo-iso-14001.jpg

795 ms

ISO145001.jpg

ISO145001.jpg

863 ms

logo-gobierno-vasco.jpg

logo-gobierno-vasco.jpg

872 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4gaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4gaVc.ttf

183 ms

recaptcha__en.js

recaptcha__en.js

108 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

776 ms

hotel-restaurant.woff

hotel-restaurant.woff

828 ms

real-estate.woff

real-estate.woff

918 ms

finance.woff

finance.woff

917 ms

education-48.woff

education-48.woff

918 ms

communication-48-x-48.woff

communication-48-x-48.woff

917 ms

logo-eu.jpg

logo-eu.jpg

903 ms

logo-erasmus.png

logo-erasmus.png

905 ms

logo-lanbide.jpg

logo-lanbide.jpg

903 ms

logo-ge.png

logo-ge.png

902 ms

logo-kontzilia.jpg

logo-kontzilia.jpg

902 ms

logo-aice.jpg

logo-aice.jpg

888 ms

logo-bizkaired.jpg

logo-bizkaired.jpg

886 ms

logo-bilbao-centro.jpg

logo-bilbao-centro.jpg

890 ms

logo-arce.jpg

logo-arce.jpg

887 ms

logo-plan-recuperacion.jpg

logo-plan-recuperacion.jpg

890 ms

logo-laukoa.jpg

logo-laukoa.jpg

905 ms

fallback

fallback

128 ms

fallback__ltr.css

fallback__ltr.css

12 ms

hs-icons.ttf

hs-icons.ttf

561 ms

css

css

18 ms

logo_48.png

logo_48.png

4 ms

KFOmCnqEu92Fr1Mu4mxP.ttf

KFOmCnqEu92Fr1Mu4mxP.ttf

28 ms

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

29 ms

Accessibility Review

centrosanluis.com accessibility score

79

Accessibility Issues

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

Buttons do not have an accessible name

High

Links do not have a discernible name

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

ARIA IDs are not unique

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Best Practices

centrosanluis.com best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

centrosanluis.com SEO score

86

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

robots.txt is not valid

Mobile Friendly

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

Impact

Issue

High

Document uses legible font sizes

Language and Encoding

  • Language Detected

    ES

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Centrosanluis.com can be misinterpreted by Google and other search engines. Our service has detected that Spanish is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Centrosanluis.com main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

centrosanluis.com

Open Graph data is detected on the main page of Centro Sanluis. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: