Report Summary

  • 15

    Performance

    Renders faster than
    27% of other websites

  • 97

    Accessibility

    Visual factors better than
    that of 92% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

crai.ub.edu

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

Page Load Speed

7.3 sec in total

First Response

1.7 sec

Resources Loaded

4.9 sec

Page Rendered

783 ms

crai.ub.edu screenshot

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 1.7 sec and then it took 5.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

crai.ub.edu performance score

15

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.3 s

0/100

10%

LCP (Largest Contentful Paint)

Value10.7 s

0/100

25%

SI (Speed Index)

Value12.5 s

3/100

10%

TBT (Total Blocking Time)

Value13,400 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.056

98/100

15%

TTI (Time to Interactive)

Value34.1 s

0/100

10%

Network Requests Diagram

crai.ub.edu

1667 ms

system.base.css

261 ms

system.menus.css

352 ms

system.messages.css

380 ms

system.theme.css

384 ms

Our browser made a total of 118 requests to load all elements on the main page. We found that 81% of them (96 requests) were addressed to the original Crai.ub.edu, 9% (11 requests) were made to Platform.twitter.com and 3% (3 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.7 sec) belongs to the original domain Crai.ub.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 727.2 kB (32%)

Content Size

2.3 MB

After Optimization

1.6 MB

In fact, the total size of Crai.ub.edu main page is 2.3 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. 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. Images take 1.6 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 58.6 kB

  • Original 72.4 kB
  • After minification 69.1 kB
  • After compression 13.9 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 58.6 kB or 81% of the original size.

Image Optimization

-14%

Potential reduce by 225.0 kB

  • Original 1.6 MB
  • After minification 1.4 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. Obviously, CRAI UB needs image optimization as it can save up to 225.0 kB or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-73%

Potential reduce by 261.8 kB

  • Original 360.4 kB
  • After minification 265.4 kB
  • After compression 98.6 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 261.8 kB or 73% of the original size.

CSS Optimization

-86%

Potential reduce by 181.8 kB

  • Original 212.4 kB
  • After minification 135.9 kB
  • After compression 30.6 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 181.8 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 69 (59%)

Requests Now

116

After Optimization

47

The browser has sent 116 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 39 to 1 for JavaScripts and from 32 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

crai.ub.edu accessibility score

97

Accessibility Issues

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

crai.ub.edu 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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

crai.ub.edu SEO score

79

Search Engine Optimization Advices

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: