Tools & Wizards About Us
biblhertz.it screenshot

Report Summary

  • 64

    Performance

    Renders faster than
    77% of other websites

  • 80

    Accessibility

    Visual factors better than
    that of 49% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

biblhertz.it

Startseite

Page Load Speed

2.5 sec in total

First Response

433 ms

Resources Loaded

1.9 sec

Page Rendered

181 ms

biblhertz.it screenshot

About Website

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

Bibliotheca Hertziana - Max-Planck-Planck-Institut für Kunstgeschichte

Visit biblhertz.it

Key Findings

We analyzed Biblhertz.it page load time and found that the first response time was 433 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 40% of websites can load faster.

Performance Metrics

biblhertz.it performance score

64

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.4 s

70/100

10%

LCP (Largest Contentful Paint)

Value2.5 s

90/100

25%

SI (Speed Index)

Value5.4 s

56/100

10%

TBT (Total Blocking Time)

Value630 ms

47/100

30%

CLS (Cumulative Layout Shift)

Value0.201

61/100

15%

TTI (Time to Interactive)

Value6.7 s

56/100

10%

Network Requests Diagram

biblhertz.it

433 ms

jquery.fancybox-1.3.4.css

99 ms

stylesheet_7ee08aac6d.css

194 ms

startpage.css

195 ms

startpage_menu.css

197 ms

Our browser made a total of 35 requests to load all elements on the main page. We found that all of those requests were addressed to Biblhertz.it and no external sources were called. The less responsive or slowest element that took the longest time to load (863 ms) belongs to the original domain Biblhertz.it.

Page Optimization Overview & Recommendations

Page size can be reduced by 154.4 kB (16%)

Content Size

945.7 kB

After Optimization

791.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Biblhertz.it main page is 945.7 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. 20% of websites need less resources to load. Images take 762.0 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 18.8 kB

  • Original 24.6 kB
  • After minification 22.9 kB
  • After compression 5.7 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 18.8 kB or 77% of the original size.

Image Optimization

-3%

Potential reduce by 25.1 kB

  • Original 762.0 kB
  • After minification 736.9 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. Biblhertz images are well optimized though.

JavaScript Optimization

-67%

Potential reduce by 87.5 kB

  • Original 130.1 kB
  • After minification 122.1 kB
  • After compression 42.6 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 87.5 kB or 67% of the original size.

CSS Optimization

-79%

Potential reduce by 23.0 kB

  • Original 29.0 kB
  • After minification 21.4 kB
  • After compression 6.0 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. Biblhertz.it needs all CSS files to be minified and compressed as it can save up to 23.0 kB or 79% of the original size.

Requests Breakdown

Number of requests can be reduced by 19 (56%)

Requests Now

34

After Optimization

15

  • Images
  • JavaScript
  • CSS

The browser has sent 34 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Biblhertz. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

biblhertz.it

biblhertz.it

433 ms

jquery.fancybox-1.3.4.css

jquery.fancybox-1.3.4.css

99 ms

stylesheet_7ee08aac6d.css

stylesheet_7ee08aac6d.css

194 ms

startpage.css

startpage.css

195 ms

startpage_menu.css

startpage_menu.css

197 ms

rm_romahpgallery.css

rm_romahpgallery.css

197 ms

startpage_dunkel.css

startpage_dunkel.css

195 ms

fancybox.css

fancybox.css

194 ms

ausklapptext.css

ausklapptext.css

288 ms

menu_de.css

menu_de.css

290 ms

jquery-1.6.4.min.js

jquery-1.6.4.min.js

393 ms

jquery.easing-1.3.pack.js

jquery.easing-1.3.pack.js

290 ms

jquery.mousewheel-3.0.4.pack.js

jquery.mousewheel-3.0.4.pack.js

291 ms

jquery.fancybox-1.3.4.pack.js

jquery.fancybox-1.3.4.pack.js

292 ms

keyframe_info.js

keyframe_info.js

383 ms

start_sf.js

start_sf.js

384 ms

accordion.js

accordion.js

385 ms

accordion_reloaded.js

accordion_reloaded.js

387 ms

ausklapptext.js

ausklapptext.js

387 ms

keyframe_startpage.js

keyframe_startpage.js

479 ms

rm_romahpgallery.js

rm_romahpgallery.js

479 ms

bg_kachel_dunkel.jpg

bg_kachel_dunkel.jpg

290 ms

search.gif

search.gif

111 ms

logo_mpi_rom.gif

logo_mpi_rom.gif

101 ms

logo_mpg.gif

logo_mpg.gif

113 ms

seitenanzeiger_grau.png

seitenanzeiger_grau.png

109 ms

seitenanzeiger_transparent.png

seitenanzeiger_transparent.png

110 ms

Vortrag_Savelli_Cecilia_2.jpg

Vortrag_Savelli_Cecilia_2.jpg

863 ms

Bruenn_1593_Willenberg_02.jpg

Bruenn_1593_Willenberg_02.jpg

586 ms

Paolo_Guidotti__Giudizio_di_Salomone__Bassano_Romano__Palazzo_GiustinianiKLEIN.jpg

Paolo_Guidotti__Giudizio_di_Salomone__Bassano_Romano__Palazzo_GiustinianiKLEIN.jpg

588 ms

Papsttagung.jpg

Papsttagung.jpg

586 ms

542133c7d3.jpg

542133c7d3.jpg

493 ms

mainnav_home.gif

mainnav_home.gif

386 ms

seitenanzeiger_rot.png

seitenanzeiger_rot.png

485 ms

print.css

print.css

98 ms

Accessibility Review

biblhertz.it accessibility score

80

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-*] attributes do not match their roles

High

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

High

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

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

biblhertz.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

SEO Factors

biblhertz.it SEO score

92

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

    DE

  • Language Claimed

    DE

  • Encoding

    UTF-8

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

biblhertz.it

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