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The overall score for this website.


How accessible the website is to mobile and disabled users.


How satisfying the website is likely to be for users.


How well marketed and popular the website is.


How well designed and built the website is.

Nibbler tested a sample of 2 pages from this website at 11:45 AM on Sep 22, 2022 (BST).

Top priorities for website improvement

  • Add meaningful anchor text that describes the link's destination. If the link contains an image, ensure you have provided alt text. (read more)
  • Sign up for a Twitter account and make sure it is linked to from your site. (read more)
  • Add width and height attributes to all image tags. The width and height you specify should be the same as the source image. If you want to resize an image in the browser, use CSS. (read more)


This website does not appear to be associated with a Twitter account.

  • This website did not contain a link to Twitter.
    • Sign up for a Twitter account and make sure it is linked to from your site.


1,145,522 Most popular website in the world

There has been no mentionable change in this website's popularity recently.

  • This is the 1,145,522 most popular website in the world.
  • Over the past 3 months, this website has experienced no measurable change in popularity.

Source: Alexa


4% of images have a clearly defined size

No images are being resized by the browser


Mobile screenshot of endesaluz.esTablet screenshot of
  • All of this website appears to be optimised for viewing on a mobile phone or a tablet.

Media specific CSS detected

MediaMin widthMax widthCSS file

Server behavior10.0

Yes404 page


  • This website handles missing pages correctly by sending a 404 HTTP status code.
  • This website was served with GZIP encoding. This is very good because it reduces the loading time of a web page.
  • This website returns page content with or without a trailing slash on the URLs, but each page has a canonical tag to denote the correct version. This is ideal, as search engines will know which version to index.
  • This website follows the best practice of using a permanent (HTTP 301) redirect from to This is ideal.


100% of pages use analytics

Multiple Analytics Solutions

  • Every page in this website is using some form of analytics software. This is excellent and should allow for a complete analysis of visitor behavior.

Analytics Software Found

Software Name
Google Analytics
Google Tag Manager

Page titles10.0

100% of pages have defined titles

0% of page titles are weak

  • All pages were found to use page titles appropriately. Page titles appear in search results and at the top of the browser's window when visiting the site. Appropriate page titles are particularly important for search engine optimization.


ahora alta ambiente aplicar asociarlo assist barata bono calcula cambiar comprometidos conforme considera consumo contratar contrato ctrico cuota dispara dual duraci eficiencia elige endesa energ estar factura gratis happy horas mantenimiento medio mejor mensual mismo netflix nica nueva ocurre okgas okluz para permanencia personalizada plan precio primer promocionadas puedo quieres recompensamos recompensas servicios siempre significa sobre social sorpresas sostenible suministro tarifa tarifas tempo tendr tengo tiene titular todas vate

  • All pages were found to use defined headings. This is excellent as it allows visitors and search engines to summarize the content of webpages quickly. Correctly defined headings aid accessibility and are particularly important for search engine optimization.

Page headings detail

URLHeadingLevel a Endesa y llévate un 20% dto. en tu consumo de luz el primer año(1)H1 One Endesa: Tarifas con el mismo precio todas las horas del díaH2 Tempo Happy Endesa: Elige cuándo quieres que tu consumo de luz sea gratisH2 tu Mejor Tarifa de Luz, Gas o Luz y GasH2 tarifa de luz sin permanenciaH3 dto. en tu consumo de luz para siempre(1)H3 tus 50h deH3 DTO. en mantenimiento 1 añoH3 Luz + One Gas + MantenimientoH3 GasH3 LuzH3¿Cuándo es más barata la luz con Endesa?H3¿Las horas promocionadas aplicarían sobre la factura de gas?H3¿Cómo dar de alta luz y gas de Endesa?H3¿Qué se considera dual?H3¿Cuáles son los servicios OKGas de Endesa y OKLuz Assist Endesa?H3¿Puedo cambiar el titular del contrato?H3 Única:H1 sorpresasH3 PersonalizadaH3 tu eficienciaH3 permanenciaH3¿Qué es Única de Endesa?H3¿Qué significa estar comprometidos con el medio ambiente?H3¿Con Única tendré energía sostenible?H3¿Cómo se calcula tu cuota mensual personalizada?H3¿Qué puedo contratar con Única de Endesa?H3 tengo Netflix, ¿puedo asociarlo ahora con Única de Endesa?H3¿Qué es el plan de recompensas?H3¿Qué ocurre si tu consumo se dispara?H3¿Y si no estás conforme con tu nueva cuota personalizada?H3¿Qué duración tiene mi contrato de ÚNICA?H3¿Tendré permanencia si contrato ÚNICA?H3¿Con ÚNICA el suministro eléctrico tiene bono social?H3

Meta tags10.0

This is how this website will look in Google search listings:

▷ Endesa Luz y gas | Tarifas de luz 💡 y gas |

¿Quieres contratar la luz o el gas con Endesa? Podrás contratar online: ✅Tarifas Tempo Endesa: 50 horas GRATIS ✅Tarifa One, la primera tarifa de luz y de gas ...

  • All pages were found to include a meta description. This is good because search engines (like Google) show this text in search result pages.

Meta Tags (name attribute)

Page URLNameContent, initial-scale=1, shrink-to-fit=no¿Quieres contratar la luz o el gas con Endesa? Podrás contratar online: ✅Tarifas Tempo Endesa: 50 horas GRATIS ✅Tarifa One, la primera tarifa de luz y de gas 100% online., initial-scale=1, shrink-to-fit=no¿Quieres contratar energía con Endesa? Podrás contratar online: ✅Tarifa Personalizada ✅ Cuota fija mensual ♻️ Recompensamos tu eficiencia.


100% of pages are optimized for printing

  • All pages of this website appear to be optimized for printing (using CSS).

Media specific CSS detected

MediaMin widthMax widthCSS file

URL format10.0

  • This website uses appropriate web addresses (URLs) throughout. This is excellent and will help search engine placement, usability and the marketability of this website.

Amount of content10.0

Rendering Chart...

  • This website has an average of 3,716 words per page. The amount of content on a website has been shown to correlate with its search engine ranking.

Amount of content discovered



Last updated September 1, 2022

  • It looks like this website was last updated on Thursday, September 1, 2022. This is good because visitors perceive up-to-date websites as more credible. Websites that are updated regularly are also spidered by search engines more often.
  • To find this information we used the last modified dates reported by this website's server in addition to looking for dates written on each page.

Domain agei

  • Sorry, we cannot check the domain age of .es websites.

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