Report Summary

  • 32

    Performance

    Renders faster than
    52% of other websites

  • 77

    Accessibility

    Visual factors better than
    that of 45% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 91

    SEO

    Google-friendlier than
    71% of websites

istitutovolterra.it

Istituto Volterra - Istituto Tecnico Tecnologico Statale “Vito Volterra” a San Donà di Piave (VE)

Page Load Speed

4.4 sec in total

First Response

416 ms

Resources Loaded

3.5 sec

Page Rendered

408 ms

istitutovolterra.it screenshot

About Website

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

Istituto Tecnico Tecnologico Statale “Vito Volterra” a San Donà di Piave (VE)

Visit istitutovolterra.it

Key Findings

We analyzed Istitutovolterra.it page load time and found that the first response time was 416 ms and then it took 3.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

istitutovolterra.it performance score

32

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.0 s

1/100

10%

LCP (Largest Contentful Paint)

Value14.9 s

0/100

25%

SI (Speed Index)

Value14.5 s

1/100

10%

TBT (Total Blocking Time)

Value580 ms

51/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value12.7 s

14/100

10%

Network Requests Diagram

istitutovolterra.it

416 ms

www.istitutovolterra.it

917 ms

lightbox.css

223 ms

SpryMenuBarHorizontal.css

212 ms

SpryAccordion.css

219 ms

Our browser made a total of 82 requests to load all elements on the main page. We found that 82% of them (67 requests) were addressed to the original Istitutovolterra.it, 9% (7 requests) were made to Ilquotidianodellapa.it and 2% (2 requests) were made to Gazzettaamministrativa.it. The less responsive or slowest element that took the longest time to load (917 ms) belongs to the original domain Istitutovolterra.it.

Page Optimization Overview & Recommendations

Page size can be reduced by 499.1 kB (44%)

Content Size

1.1 MB

After Optimization

646.3 kB

In fact, the total size of Istitutovolterra.it main page is 1.1 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 552.7 kB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 65.0 kB

  • Original 76.0 kB
  • After minification 53.0 kB
  • After compression 11.0 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 23.0 kB, which is 30% 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 65.0 kB or 85% of the original size.

Image Optimization

-10%

Potential reduce by 54.8 kB

  • Original 552.7 kB
  • After minification 498.0 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. Istituto Volterra images are well optimized though.

JavaScript Optimization

-72%

Potential reduce by 344.2 kB

  • Original 475.3 kB
  • After minification 381.5 kB
  • After compression 131.1 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 344.2 kB or 72% of the original size.

CSS Optimization

-85%

Potential reduce by 35.2 kB

  • Original 41.4 kB
  • After minification 21.6 kB
  • After compression 6.2 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. Istitutovolterra.it needs all CSS files to be minified and compressed as it can save up to 35.2 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 46 (59%)

Requests Now

78

After Optimization

32

The browser has sent 78 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Istituto Volterra. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 22 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

istitutovolterra.it accessibility score

77

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-hidden="true"] elements contain focusable descendents

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

<frame> or <iframe> elements do not have a title

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

istitutovolterra.it 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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

istitutovolterra.it SEO score

91

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

    IT

  • Language Claimed

    IT

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Istitutovolterra.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 Istitutovolterra.it main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

Open Graph description is not detected on the main page of Istituto Volterra. 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: