Tools & Wizards About Us

Report Summary

  • 40

    Performance

    Renders faster than
    59% of other websites

  • 96

    Accessibility

    Visual factors better than
    that of 88% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

crai.ub.edu

Centre de Recursos per a l'Aprenentatge i la Investigació (CRAI UB)

Page Load Speed

6.6 sec in total

First Response

621 ms

Resources Loaded

4.9 sec

Page Rendered

1.1 sec

About Website

Visit crai.ub.edu now to see the best up-to-date CRAI UB content for Spain and also check out these interesting facts you probably never knew about crai.ub.edu

Integra els serveis de biblioteca, suport a la docència i a la recerca, i està format pels CRAI biblioteques i les unitats tècniques i pel CeDocBiV i el CEDI.

Visit crai.ub.edu

Key Findings

We analyzed Crai.ub.edu page load time and found that the first response time was 621 ms and then it took 6 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

crai.ub.edu performance score

40

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value11.7 s

0/100

10%

LCP (Largest Contentful Paint)

Value30.3 s

0/100

25%

SI (Speed Index)

Value14.7 s

1/100

10%

TBT (Total Blocking Time)

Value280 ms

81/100

30%

CLS (Cumulative Layout Shift)

Value0.021

100/100

15%

TTI (Time to Interactive)

Value20.2 s

2/100

10%

Network Requests Diagram

crai.ub.edu

621 ms

js

64 ms

slick.css

260 ms

slick.module.css

350 ms

ajax-progress.module.css

400 ms

Our browser made a total of 163 requests to load all elements on the main page. We found that 94% of them (153 requests) were addressed to the original Crai.ub.edu, 2% (3 requests) were made to Static.addtoany.com and 1% (2 requests) were made to Cdnjs.cloudflare.com. The less responsive or slowest element that took the longest time to load (1.8 sec) belongs to the original domain Crai.ub.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.6 MB (17%)

Content Size

9.9 MB

After Optimization

8.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Crai.ub.edu main page is 9.9 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. 50% of websites need less resources to load. Images take 8.8 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 70.3 kB

  • Original 85.4 kB
  • After minification 80.9 kB
  • After compression 15.1 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 70.3 kB or 82% of the original size.

Image Optimization

-9%

Potential reduce by 802.7 kB

  • Original 8.8 MB
  • After minification 8.0 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. CRAI UB images are well optimized though.

JavaScript Optimization

-64%

Potential reduce by 273.3 kB

  • Original 427.4 kB
  • After minification 420.0 kB
  • After compression 154.1 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 273.3 kB or 64% of the original size.

CSS Optimization

-84%

Potential reduce by 501.2 kB

  • Original 599.9 kB
  • After minification 543.1 kB
  • After compression 98.7 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. Crai.ub.edu needs all CSS files to be minified and compressed as it can save up to 501.2 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 148 (95%)

Requests Now

156

After Optimization

8

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 156 CSS, Javascripts, AJAX and image requests in order to completely render the main page of CRAI UB. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 53 to 1 for JavaScripts and from 81 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

crai.ub.edu accessibility score

96

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

[id] attributes on active, focusable elements are not unique

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

Links do not have a discernible name

Best Practices

crai.ub.edu best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

crai.ub.edu SEO score

90

Search Engine Optimization Advices

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

    CA

  • Language Claimed

    CA

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Crai.ub.edu can be misinterpreted by Google and other search engines. Our service has detected that Catalan is used on the page, and it matches the claimed language. Our system also found out that Crai.ub.edu 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 description is not detected on the main page of CRAI UB. 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: