Tools & Wizards About Us
altersol.es screenshot

Report Summary

  • 58

    Performance

    Renders faster than
    74% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 42% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 71

    SEO

    Google-friendlier than
    30% of websites

altersol.es

Energía solar Madrid | Empresa de energía solar en Madrid.

Page Load Speed

3 sec in total

First Response

300 ms

Resources Loaded

2.1 sec

Page Rendered

604 ms

altersol.es screenshot

About Website

Welcome to altersol.es homepage info - get ready to check Altersol best content right away, or after learning these important things about altersol.es

Instalación (instalador) y mantenimiento de energía solar (placas solares) Instalaciones placas solares Instalaciones de autoconsumo Instalación de aerotermia Mantenimiento (revisión y reparación) ene...

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Key Findings

We analyzed Altersol.es page load time and found that the first response time was 300 ms and then it took 2.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

altersol.es performance score

58

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.8 s

90/100

10%

LCP (Largest Contentful Paint)

Value6.6 s

8/100

25%

SI (Speed Index)

Value3.3 s

90/100

10%

TBT (Total Blocking Time)

Value470 ms

61/100

30%

CLS (Cumulative Layout Shift)

Value0.101

89/100

15%

TTI (Time to Interactive)

Value6.2 s

62/100

10%

Network Requests Diagram

altersol.es

300 ms

altersol.es

415 ms

gtm.js

62 ms

webStyle.css

82 ms

main.js

154 ms

Our browser made a total of 27 requests to load all elements on the main page. We found that 96% of them (26 requests) were addressed to the original Altersol.es, 4% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Altersol.es.

Page Optimization Overview & Recommendations

Page size can be reduced by 22.7 kB (1%)

Content Size

1.8 MB

After Optimization

1.8 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Altersol.es main page is 1.8 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 25% of websites need less resources to load. Images take 1.8 MB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 20.5 kB

  • Original 27.1 kB
  • After minification 25.1 kB
  • After compression 6.5 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 20.5 kB or 76% of the original size.

Image Optimization

-0%

Potential reduce by 650 B

  • Original 1.8 MB
  • After minification 1.8 MB

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. Altersol images are well optimized though.

JavaScript Optimization

-30%

Potential reduce by 230 B

  • Original 759 B
  • After minification 759 B
  • After compression 529 B

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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 230 B or 30% of the original size.

CSS Optimization

-25%

Potential reduce by 1.3 kB

  • Original 5.0 kB
  • After minification 5.0 kB
  • After compression 3.8 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. Altersol.es needs all CSS files to be minified and compressed as it can save up to 1.3 kB or 25% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

14

After Optimization

14

  • Images
  • JavaScript
  • CSS

The browser has sent 14 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Altersol. According to our analytics all requests are already optimized.

Network Requests Diagram

altersol.es

altersol.es

300 ms

altersol.es

altersol.es

415 ms

gtm.js

gtm.js

62 ms

webStyle.css

webStyle.css

82 ms

main.js

main.js

154 ms

logoAltersol.png

logoAltersol.png

93 ms

cargador-coche-instalacion.jpg

cargador-coche-instalacion.jpg

135 ms

fondoContenido.jpg

fondoContenido.jpg

607 ms

ingenieria_gestoria.jpg

ingenieria_gestoria.jpg

369 ms

climatizacion_piscinas.jpg

climatizacion_piscinas.jpg

500 ms

cargador-coche-electrico-instalaciones.jpg

cargador-coche-electrico-instalaciones.jpg

533 ms

altersol_ftv_autoconsumo.jpg

altersol_ftv_autoconsumo.jpg

733 ms

altersol_vaillant_aerotermia_instalacion_madrid.jpg

altersol_vaillant_aerotermia_instalacion_madrid.jpg

524 ms

bonificacion_ibi.jpg

bonificacion_ibi.jpg

604 ms

altersol_autoconsumo_fotovoltaico.jpg

altersol_autoconsumo_fotovoltaico.jpg

800 ms

altersol_termica_instaladores_madrid.jpg

altersol_termica_instaladores_madrid.jpg

788 ms

altersol_instalacion_industrial_energia_solar.jpg

altersol_instalacion_industrial_energia_solar.jpg

1213 ms

logo_altersol.webp

logo_altersol.webp

682 ms

endef.webp

endef.webp

682 ms

kostal.webp

kostal.webp

758 ms

Logo%20atersa.webp

Logo%20atersa.webp

759 ms

Logo_Sunfer_2019.webp

Logo_Sunfer_2019.webp

813 ms

Logo_Vaillant.webp

Logo_Vaillant.webp

834 ms

Logo-Fronius-1820x830.webp

Logo-Fronius-1820x830.webp

837 ms

logoSteca.webp

logoSteca.webp

875 ms

logotipo_fondo%20termicol.webp

logotipo_fondo%20termicol.webp

873 ms

AF-LOGOTIPO-TURBOFANS-IDENTIDAD-21.webp

AF-LOGOTIPO-TURBOFANS-IDENTIDAD-21.webp

894 ms

Accessibility Review

altersol.es accessibility score

76

Accessibility Issues

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.

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

altersol.es best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

altersol.es SEO score

71

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

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    N/A

  • Language Claimed

    ES

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Altersol.es can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is Spanish. Our system also found out that Altersol.es main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

altersol.es

Open Graph description is not detected on the main page of Altersol. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: