Tools & Wizards About Us
isissvalleseriana.it screenshot

Report Summary

  • 54

    Performance

    Renders faster than
    71% of other websites

  • 92

    Accessibility

    Visual factors better than
    that of 78% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

isissvalleseriana.it

Istituto Statale d'Istruzione Secondaria Superiore "Valle Seriana"

Page Load Speed

2.5 sec in total

First Response

411 ms

Resources Loaded

2 sec

Page Rendered

104 ms

isissvalleseriana.it screenshot

About Website

Welcome to isissvalleseriana.it homepage info - get ready to check Isiss Valle Seriana best content for Italy right away, or after learning these important things about isissvalleseriana.it

Sito web istituzionale Istituto Statale d'Istruzione Secondaria Superiore "Valle Seriana" - Via Marconi, 45 - 24025 Gazzaniga (BG)

Visit isissvalleseriana.it

Key Findings

We analyzed Isissvalleseriana.it page load time and found that the first response time was 411 ms and then it took 2.1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

isissvalleseriana.it performance score

54

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

42/100

10%

LCP (Largest Contentful Paint)

Value10.6 s

0/100

25%

SI (Speed Index)

Value5.4 s

56/100

10%

TBT (Total Blocking Time)

Value170 ms

93/100

30%

CLS (Cumulative Layout Shift)

Value0.092

92/100

15%

TTI (Time to Interactive)

Value10.4 s

24/100

10%

Network Requests Diagram

isissvalleseriana.it

411 ms

www.isissvalleseriana.it

443 ms

urchin.js

7 ms

INDEX_01.gif

329 ms

fixo.png

439 ms

Our browser made a total of 35 requests to load all elements on the main page. We found that 94% of them (33 requests) were addressed to the original Isissvalleseriana.it, 6% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (644 ms) belongs to the original domain Isissvalleseriana.it.

Page Optimization Overview & Recommendations

Page size can be reduced by 42.7 kB (22%)

Content Size

196.4 kB

After Optimization

153.7 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Isissvalleseriana.it main page is 196.4 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. 45% of websites need less resources to load. Images take 172.2 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 13.8 kB

  • Original 17.4 kB
  • After minification 13.1 kB
  • After compression 3.5 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 4.2 kB, which is 24% 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 13.8 kB or 80% of the original size.

Image Optimization

-16%

Potential reduce by 27.9 kB

  • Original 172.2 kB
  • After minification 144.3 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. Obviously, Isiss Valle Seriana needs image optimization as it can save up to 27.9 kB or 16% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-14%

Potential reduce by 971 B

  • Original 6.8 kB
  • After minification 6.8 kB
  • After compression 5.9 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 971 B or 14% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

32

After Optimization

32

  • Images
  • JavaScript

The browser has sent 32 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Isiss Valle Seriana. According to our analytics all requests are already optimized.

Network Requests Diagram

isissvalleseriana.it

isissvalleseriana.it

411 ms

www.isissvalleseriana.it

www.isissvalleseriana.it

443 ms

urchin.js

urchin.js

7 ms

INDEX_01.gif

INDEX_01.gif

329 ms

fixo.png

fixo.png

439 ms

saperi.jpg

saperi.jpg

331 ms

classe_viva.jpg

classe_viva.jpg

332 ms

crs_service.jpg

crs_service.jpg

439 ms

logo_bergamo_scienza.png

logo_bergamo_scienza.png

440 ms

openday_logo.jpg

openday_logo.jpg

437 ms

edusat.jpg

edusat.jpg

449 ms

eL.png

eL.png

553 ms

logoUSRlomb.jpg

logoUSRlomb.jpg

542 ms

BDP_logo.jpg

BDP_logo.jpg

542 ms

logo%20USP-Bergamo.jpg

logo%20USP-Bergamo.jpg

644 ms

logo_150_anni_unita'_d'Italia.jpg

logo_150_anni_unita'_d'Italia.jpg

544 ms

__utm.gif

__utm.gif

3 ms

INDEX_01-ImageMap_02_sopra.gif

INDEX_01-ImageMap_02_sopra.gif

210 ms

INDEX_01-ImageMap_02_clic.gif

INDEX_01-ImageMap_02_clic.gif

212 ms

INDEX_01-ImageMap_03_sopra.gif

INDEX_01-ImageMap_03_sopra.gif

214 ms

INDEX_01-ImageMap_03_clic.gif

INDEX_01-ImageMap_03_clic.gif

212 ms

INDEX_01-ImageMap_04_sopra.gif

INDEX_01-ImageMap_04_sopra.gif

110 ms

INDEX_01-ImageMap_04_clic.gif

INDEX_01-ImageMap_04_clic.gif

214 ms

INDEX_01-ImageMap_05_sopra.gif

INDEX_01-ImageMap_05_sopra.gif

215 ms

INDEX_01-ImageMap_05_gi.gif

INDEX_01-ImageMap_05_gi.gif

315 ms

INDEX_01-ImageMap_06_sopra.gif

INDEX_01-ImageMap_06_sopra.gif

423 ms

INDEX_01-ImageMap_06_clic.gif

INDEX_01-ImageMap_06_clic.gif

318 ms

INDEX_01-ImageMap_07_sopra.gif

INDEX_01-ImageMap_07_sopra.gif

423 ms

INDEX_01-ImageMap_07_clic.gif

INDEX_01-ImageMap_07_clic.gif

425 ms

INDEX_01-ImageMap_08_sopra.gif

INDEX_01-ImageMap_08_sopra.gif

320 ms

INDEX_01-ImageMap_08_clic.gif

INDEX_01-ImageMap_08_clic.gif

419 ms

INDEX_01-ImageMap_09_sopra.gif

INDEX_01-ImageMap_09_sopra.gif

429 ms

INDEX_01-ImageMap_09_clic.gif

INDEX_01-ImageMap_09_clic.gif

427 ms

INDEX_01-ImageMap_01_sopra.gif

INDEX_01-ImageMap_01_sopra.gif

524 ms

INDEX_01-ImageMap_01_clic.gif

INDEX_01-ImageMap_01_clic.gif

527 ms

Accessibility Review

isissvalleseriana.it accessibility score

92

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

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

High

Some elements have a [tabindex] value greater than 0

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

isissvalleseriana.it 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

isissvalleseriana.it SEO score

91

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

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

    N/A

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Isissvalleseriana.it can be misinterpreted by Google and other search engines. Our service has detected that Italian is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Isissvalleseriana.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

isissvalleseriana.it

Open Graph description is not detected on the main page of Isiss Valle Seriana. 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: