Tools & Wizards About Us
vatlib.it screenshot

Report Summary

  • 25

    Performance

    Renders faster than
    44% of other websites

  • 69

    Accessibility

    Visual factors better than
    that of 34% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 50

    SEO

    Google-friendlier than
    18% of websites

vatlib.it

Home

Page Load Speed

4.5 sec in total

First Response

412 ms

Resources Loaded

3.5 sec

Page Rendered

562 ms

vatlib.it screenshot

About Website

Click here to check amazing Vatlib content for Italy. Otherwise, check out these important facts you probably never knew about vatlib.it

Vatican Library

Visit vatlib.it

Key Findings

We analyzed Vatlib.it page load time and found that the first response time was 412 ms and then it took 4 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

vatlib.it performance score

25

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.3 s

19/100

10%

LCP (Largest Contentful Paint)

Value17.6 s

0/100

25%

SI (Speed Index)

Value6.9 s

33/100

10%

TBT (Total Blocking Time)

Value500 ms

58/100

30%

CLS (Cumulative Layout Shift)

Value0.634

9/100

15%

TTI (Time to Interactive)

Value13.5 s

11/100

10%

Network Requests Diagram

vatlib.it

412 ms

www.vaticanlibrary.va

727 ms

slick.css

292 ms

slick-theme.css

299 ms

jquery-ui.min.css

413 ms

Our browser made a total of 58 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Vatlib.it, 97% (56 requests) were made to Vaticanlibrary.va and 2% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (2 sec) relates to the external source Vaticanlibrary.va.

Page Optimization Overview & Recommendations

Page size can be reduced by 616.0 kB (7%)

Content Size

8.3 MB

After Optimization

7.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Vatlib.it main page is 8.3 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. 50% of websites need less resources to load. Images take 7.5 MB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 129.6 kB

  • Original 146.5 kB
  • After minification 139.7 kB
  • After compression 16.9 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 129.6 kB or 88% of the original size.

Image Optimization

-1%

Potential reduce by 66.8 kB

  • Original 7.5 MB
  • After minification 7.5 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. Vatlib images are well optimized though.

JavaScript Optimization

-72%

Potential reduce by 319.4 kB

  • Original 445.4 kB
  • After minification 444.5 kB
  • After compression 126.1 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 319.4 kB or 72% of the original size.

CSS Optimization

-79%

Potential reduce by 100.3 kB

  • Original 126.8 kB
  • After minification 118.6 kB
  • After compression 26.5 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. Vatlib.it needs all CSS files to be minified and compressed as it can save up to 100.3 kB or 79% of the original size.

Requests Breakdown

Number of requests can be reduced by 11 (20%)

Requests Now

54

After Optimization

43

  • Images
  • JavaScript
  • CSS

The browser has sent 54 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vatlib. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

vatlib.it

vatlib.it

412 ms

www.vaticanlibrary.va

www.vaticanlibrary.va

727 ms

slick.css

slick.css

292 ms

slick-theme.css

slick-theme.css

299 ms

jquery-ui.min.css

jquery-ui.min.css

413 ms

jquery-ui.theme.min.css

jquery-ui.theme.min.css

312 ms

jquery-ui.structure.min.css

jquery-ui.structure.min.css

414 ms

styles.css

styles.css

517 ms

jquery-1.12.4.min.js

jquery-1.12.4.min.js

486 ms

jquery-ui.min.js

jquery-ui.min.js

695 ms

slick.min.js

slick.min.js

324 ms

jquery.validate.min.js

jquery.validate.min.js

323 ms

calenda.js

calenda.js

324 ms

scripts.js

scripts.js

408 ms

js

js

55 ms

ic_arrow_down.png

ic_arrow_down.png

105 ms

ic_en.jpg

ic_en.jpg

104 ms

logo.png

logo.png

106 ms

ic_user.png

ic_user.png

104 ms

ic_carrello.png

ic_carrello.png

137 ms

ic_studio_privato.png

ic_studio_privato.png

206 ms

ic_uso_professionale.png

ic_uso_professionale.png

206 ms

ic_consulta.png

ic_consulta.png

207 ms

ic_ordini.png

ic_ordini.png

206 ms

ic_calendario.png

ic_calendario.png

234 ms

ic_search.png

ic_search.png

307 ms

ic_cataloghi.png

ic_cataloghi.png

309 ms

MSS-catalog.png

MSS-catalog.png

310 ms

ic_pubblicazioni.png

ic_pubblicazioni.png

308 ms

Hanna_logo_ing.jpg

Hanna_logo_ing.jpg

331 ms

slidersala.jpg

slidersala.jpg

714 ms

Medagliere072021.png

Medagliere072021.png

927 ms

slide008.png

slide008.png

1963 ms

MSS-catalog.png

MSS-catalog.png

543 ms

DVL.png

DVL.png

544 ms

Owl.png

Owl.png

630 ms

ST480_lit.jpg

ST480_lit.jpg

545 ms

Aditus_400x178.png

Aditus_400x178.png

624 ms

danteabs.png

danteabs.png

822 ms

ST561.jpg

ST561.jpg

924 ms

ST564.jpg

ST564.jpg

1224 ms

AA14.jpg

AA14.jpg

1119 ms

ST565.jpg

ST565.jpg

1963 ms

Sanctuary-of-Culture.png

Sanctuary-of-Culture.png

1022 ms

loader.gif

loader.gif

1027 ms

search-icon-lg.png

search-icon-lg.png

1124 ms

search-lg-go-icon.png

search-lg-go-icon.png

1131 ms

ic_twitter_white.png

ic_twitter_white.png

1177 ms

ic_contattaci.png

ic_contattaci.png

1171 ms

CabinCondensed-Regular.ttf

CabinCondensed-Regular.ttf

1185 ms

ic_newsletter.png

ic_newsletter.png

1218 ms

logo_white.png

logo_white.png

1221 ms

logo_nttdata.png

logo_nttdata.png

1224 ms

close-icon-black.png

close-icon-black.png

797 ms

sprite_checkbox.png

sprite_checkbox.png

873 ms

sprite_dots.png

sprite_dots.png

878 ms

ajax-loader.gif

ajax-loader.gif

886 ms

slick.woff

slick.woff

873 ms

Accessibility Review

vatlib.it accessibility score

69

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

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

vatlib.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

vatlib.it SEO score

50

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

High

Image elements do not have [alt] attributes

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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 Vatlib.it 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 Vatlib.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

vatlib.it

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