Tools & Wizards About Us

Report Summary

  • 46

    Performance

    Renders faster than
    64% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 83% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

r2cities.eu

R2Cities: Residential Renovation towards nearly zero energy cities

Page Load Speed

2.4 sec in total

First Response

330 ms

Resources Loaded

1.8 sec

Page Rendered

201 ms

About Website

Visit r2cities.eu now to see the best up-to-date R2Cities content and also check out these interesting facts you probably never knew about r2cities.eu

The R2Cities project aims to develop and demonstrate replicable strategies for designing, constructing and managing large scale district renovation projects for achieving nearly zero energy cities.

Visit r2cities.eu

Key Findings

We analyzed R2cities.eu page load time and found that the first response time was 330 ms and then it took 2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

r2cities.eu performance score

46

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.1 s

45/100

10%

LCP (Largest Contentful Paint)

Value8.9 s

1/100

25%

SI (Speed Index)

Value6.9 s

34/100

10%

TBT (Total Blocking Time)

Value370 ms

71/100

30%

CLS (Cumulative Layout Shift)

Value0.024

100/100

15%

TTI (Time to Interactive)

Value12.4 s

15/100

10%

Network Requests Diagram

r2cities.eu

330 ms

analytics.js

7 ms

jsdomenu.js

85 ms

jsdomenubar.js

161 ms

jquery-3.7.1.min.js

243 ms

Our browser made a total of 116 requests to load all elements on the main page. We found that 74% of them (86 requests) were addressed to the original R2cities.eu, 16% (18 requests) were made to Platform.twitter.com and 3% (3 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (573 ms) belongs to the original domain R2cities.eu.

Page Optimization Overview & Recommendations

Page size can be reduced by 125.2 kB (13%)

Content Size

997.1 kB

After Optimization

871.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of R2cities.eu main page is 997.1 kB. 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 739.3 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 40.8 kB

  • Original 52.5 kB
  • After minification 52.5 kB
  • After compression 11.8 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 40.8 kB or 78% of the original size.

Image Optimization

-8%

Potential reduce by 57.3 kB

  • Original 739.3 kB
  • After minification 681.9 kB

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. R2Cities images are well optimized though.

JavaScript Optimization

-13%

Potential reduce by 26.6 kB

  • Original 204.2 kB
  • After minification 204.1 kB
  • After compression 177.6 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 26.6 kB or 13% of the original size.

CSS Optimization

-47%

Potential reduce by 516 B

  • Original 1.1 kB
  • After minification 1.1 kB
  • After compression 587 B

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. R2cities.eu needs all CSS files to be minified and compressed as it can save up to 516 B or 47% of the original size.

Requests Breakdown

Number of requests can be reduced by 25 (23%)

Requests Now

111

After Optimization

86

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 111 CSS, Javascripts, AJAX and image requests in order to completely render the main page of R2Cities. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 26 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

r2cities.eu accessibility score

94

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

Links do not have a discernible name

Best Practices

r2cities.eu 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

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

r2cities.eu SEO score

91

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

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 R2cities.eu 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 R2cities.eu 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 R2Cities. 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: