Report Summary

  • 25

    Performance

    Renders faster than
    44% of other websites

  • 73

    Accessibility

    Visual factors better than
    that of 38% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 85

    SEO

    Google-friendlier than
    55% of websites

science.eus

Science.eus | The gateway to research in the Basque Country

Page Load Speed

4.7 sec in total

First Response

359 ms

Resources Loaded

3.9 sec

Page Rendered

433 ms

science.eus screenshot

About Website

Welcome to science.eus homepage info - get ready to check Science best content right away, or after learning these important things about science.eus

Science.eus, the website of science in Euskadi. Information about the main research groups, infrastructures and research organizations in the Basque Country

Visit science.eus

Key Findings

We analyzed Science.eus page load time and found that the first response time was 359 ms and then it took 4.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

science.eus performance score

25

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value9.0 s

0/100

10%

LCP (Largest Contentful Paint)

Value12.8 s

0/100

25%

SI (Speed Index)

Value11.0 s

6/100

10%

TBT (Total Blocking Time)

Value580 ms

51/100

30%

CLS (Cumulative Layout Shift)

Value0.212

59/100

15%

TTI (Time to Interactive)

Value17.6 s

4/100

10%

Network Requests Diagram

science.eus

359 ms

www.science.eus

654 ms

en

634 ms

gtm.js

80 ms

system.base.css

238 ms

Our browser made a total of 95 requests to load all elements on the main page. We found that 80% of them (76 requests) were addressed to the original Science.eus, 6% (6 requests) were made to Fonts.googleapis.com and 3% (3 requests) were made to Use.fontawesome.com. The less responsive or slowest element that took the longest time to load (1.4 sec) belongs to the original domain Science.eus.

Page Optimization Overview & Recommendations

Page size can be reduced by 933.8 kB (39%)

Content Size

2.4 MB

After Optimization

1.5 MB

In fact, the total size of Science.eus main page is 2.4 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. 45% of websites need less resources to load. Images take 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 34.4 kB

  • Original 42.7 kB
  • After minification 37.4 kB
  • After compression 8.3 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 5.3 kB, which is 12% 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 34.4 kB or 81% of the original size.

Image Optimization

-10%

Potential reduce by 129.5 kB

  • Original 1.3 MB
  • After minification 1.2 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. Science images are well optimized though.

JavaScript Optimization

-71%

Potential reduce by 530.1 kB

  • Original 741.8 kB
  • After minification 475.0 kB
  • After compression 211.7 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 530.1 kB or 71% of the original size.

CSS Optimization

-82%

Potential reduce by 239.8 kB

  • Original 291.7 kB
  • After minification 239.9 kB
  • After compression 51.9 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. Science.eus needs all CSS files to be minified and compressed as it can save up to 239.8 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 65 (74%)

Requests Now

88

After Optimization

23

The browser has sent 88 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Science. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 31 to 1 for JavaScripts and from 36 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

science.eus accessibility score

73

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

science.eus best practices score

75

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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

science.eus SEO score

85

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

High

Image elements do not have [alt] attributes

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Science.eus can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Science.eus 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

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