Report Summary

  • 27

    Performance

    Renders faster than
    47% of other websites

  • 65

    Accessibility

    Visual factors better than
    that of 40% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    47% of websites

  • 84

    SEO

    Google-friendlier than
    60% of websites

voltimum.it

Voltimum Italia – Il primo portale Europeo dell

Page Load Speed

3.6 sec in total

First Response

264 ms

Resources Loaded

3.2 sec

Page Rendered

223 ms

voltimum.it screenshot

About Website

Visit voltimum.it now to see the best up-to-date Voltimum content for Italy and also check out these interesting facts you probably never knew about voltimum.it

Voltimum è da anni uno strumento indipendente e riconosciuto dal mercato come fornitore leader di informazioni indispensabili per la filiera elettrica

Visit voltimum.it

Key Findings

We analyzed Voltimum.it page load time and found that the first response time was 264 ms and then it took 3.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

voltimum.it performance score

27

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.7 s

13/100

10%

LCP (Largest Contentful Paint)

Value6.9 s

7/100

25%

SI (Speed Index)

Value7.0 s

32/100

10%

TBT (Total Blocking Time)

Value1,260 ms

19/100

30%

CLS (Cumulative Layout Shift)

Value0.074

95/100

15%

TTI (Time to Interactive)

Value13.4 s

11/100

10%

Network Requests Diagram

voltimum.it

264 ms

www.voltimum.it

436 ms

css__a72rXNmi6NINBFa2RtBDhVWUBb93dxds9kdO7VuNX44__oA8k3k2p4XO3EIyjvXVGGxgFAHeeh-41bP4yk-nzOBk__1vrloJnrWbGgWJtSF3J9kM5Fq1V1-gxFRi2gjMgFbVo.css

416 ms

css__E4_KINWLj37aHTt1Wld976AMUXUlt7TMi8H87xtFMWU__dxVvjQx4yTgfy_Q2t7p15fOtfRnIWDLvTGiBZGEeImU__1vrloJnrWbGgWJtSF3J9kM5Fq1V1-gxFRi2gjMgFbVo.css

14 ms

css__LwnlcdbaRa9VOUkREsn1DDBSn6BumMm2RV10f0LvNx4__0jGftd3YYJd9jKCn0LbMp67Cstu3jgxrIxj8JpQYy7M__1vrloJnrWbGgWJtSF3J9kM5Fq1V1-gxFRi2gjMgFbVo.css

16 ms

Our browser made a total of 68 requests to load all elements on the main page. We found that 4% of them (3 requests) were addressed to the original Voltimum.it, 47% (32 requests) were made to D3p5wkccolzpd5.cloudfront.net and 41% (28 requests) were made to D2wmefcb92kfgk.cloudfront.net. The less responsive or slowest element that took the longest time to load (2 sec) relates to the external source D3p5wkccolzpd5.cloudfront.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 851.4 kB (45%)

Content Size

1.9 MB

After Optimization

1.0 MB

In fact, the total size of Voltimum.it main page is 1.9 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 857.0 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 90.9 kB

  • Original 111.6 kB
  • After minification 99.5 kB
  • After compression 20.8 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. This page needs HTML code to be minified as it can gain 12.1 kB, which is 11% 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 90.9 kB or 81% of the original size.

Image Optimization

-7%

Potential reduce by 58.4 kB

  • Original 857.0 kB
  • After minification 798.7 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. Voltimum images are well optimized though.

JavaScript Optimization

-68%

Potential reduce by 249.4 kB

  • Original 366.8 kB
  • After minification 357.6 kB
  • After compression 117.5 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 249.4 kB or 68% of the original size.

CSS Optimization

-81%

Potential reduce by 452.8 kB

  • Original 558.9 kB
  • After minification 557.9 kB
  • After compression 106.0 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. Voltimum.it needs all CSS files to be minified and compressed as it can save up to 452.8 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 23 (35%)

Requests Now

66

After Optimization

43

The browser has sent 66 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Voltimum. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

voltimum.it accessibility score

65

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

Links do not have a discernible name

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

voltimum.it 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

High

Page has valid source maps

SEO Factors

voltimum.it SEO score

84

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

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

    IT

  • Language Claimed

    IT

  • Encoding

    UTF-8

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