Tools & Wizards About Us
biblioteca.org.ar screenshot

Report Summary

  • 90

    Performance

    Renders faster than
    91% of other websites

  • 44

    Accessibility

    Visual factors better than
    that of 19% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 67

    SEO

    Google-friendlier than
    26% of websites

biblioteca.org.ar

Biblioteca Virtual Universal

Page Load Speed

399 ms in total

First Response

40 ms

Resources Loaded

247 ms

Page Rendered

112 ms

biblioteca.org.ar screenshot

About Website

Welcome to biblioteca.org.ar homepage info - get ready to check Biblioteca best content for Spain right away, or after learning these important things about biblioteca.org.ar

La Biblioteca Virtual Universal, integrada por voluntarios honorarios, es la más variada en lengua castellana, presentando más de 18000 obras digitalizadas de literatura general, educativas y técnicas...

Visit biblioteca.org.ar

Key Findings

We analyzed Biblioteca.org.ar page load time and found that the first response time was 40 ms and then it took 359 ms to load all DOM resources and completely render a web page. This is an excellent result, as only 5% of websites can load faster.

Performance Metrics

biblioteca.org.ar performance score

90

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.5 s

96/100

10%

LCP (Largest Contentful Paint)

Value1.8 s

99/100

25%

SI (Speed Index)

Value1.5 s

100/100

10%

TBT (Total Blocking Time)

Value360 ms

71/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value3.7 s

90/100

10%

Network Requests Diagram

biblioteca.org.ar

40 ms

biblioteca.org.ar

65 ms

js

77 ms

newback4.gif

20 ms

images.gif

28 ms

Our browser made a total of 45 requests to load all elements on the main page. We found that 98% of them (44 requests) were addressed to the original Biblioteca.org.ar, 2% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (82 ms) belongs to the original domain Biblioteca.org.ar.

Page Optimization Overview & Recommendations

Page size can be reduced by 22.1 kB (51%)

Content Size

43.4 kB

After Optimization

21.3 kB

  • HTML
  • Images

In fact, the total size of Biblioteca.org.ar main page is 43.4 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. 15% of websites need less resources to load. HTML takes 25.7 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 20.1 kB

  • Original 25.7 kB
  • After minification 23.0 kB
  • After compression 5.6 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 20.1 kB or 78% of the original size.

Image Optimization

-11%

Potential reduce by 2.0 kB

  • Original 17.7 kB
  • After minification 15.7 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. Obviously, Biblioteca needs image optimization as it can save up to 2.0 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

Requests Breakdown

Number of requests can be reduced by 31 (72%)

Requests Now

43

After Optimization

12

  • Images
  • JavaScript

The browser has sent 43 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Biblioteca. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Network Requests Diagram

biblioteca.org.ar

biblioteca.org.ar

40 ms

biblioteca.org.ar

biblioteca.org.ar

65 ms

js

js

77 ms

newback4.gif

newback4.gif

20 ms

images.gif

images.gif

28 ms

inglaterra.gif

inglaterra.gif

28 ms

italia.gif

italia.gif

28 ms

bibliotecas.gif

bibliotecas.gif

37 ms

LOGOnovsemilla2.jpg

LOGOnovsemilla2.jpg

29 ms

bannermenu1.png

bannermenu1.png

31 ms

spacer.gif

spacer.gif

34 ms

menuB_r1_c1.gif

menuB_r1_c1.gif

33 ms

menuB_r1_c5.gif

menuB_r1_c5.gif

35 ms

menuB_r1_c8.gif

menuB_r1_c8.gif

34 ms

menuB_r2_c5.gif

menuB_r2_c5.gif

35 ms

menuB_r3_c1.gif

menuB_r3_c1.gif

40 ms

menuB_r3_c2.gif

menuB_r3_c2.gif

40 ms

menuB_r4_c2.gif

menuB_r4_c2.gif

40 ms

menuB_r5_c2.gif

menuB_r5_c2.gif

40 ms

menuB_r5_c6.gif

menuB_r5_c6.gif

41 ms

menuB_r5_c9.gif

menuB_r5_c9.gif

41 ms

menuB_r6_c6.gif

menuB_r6_c6.gif

46 ms

menuB_r7_c2.gif

menuB_r7_c2.gif

46 ms

menuB_r7_c3.gif

menuB_r7_c3.gif

46 ms

menuB_r7_c8.gif

menuB_r7_c8.gif

47 ms

menuB_r8_c3.gif

menuB_r8_c3.gif

47 ms

menuB_r9_c3.gif

menuB_r9_c3.gif

48 ms

menuB_r9_c4.gif

menuB_r9_c4.gif

52 ms

menuB_r10_c4.gif

menuB_r10_c4.gif

53 ms

menuB_r11_c4.gif

menuB_r11_c4.gif

52 ms

menuB_r12_c7.gif

menuB_r12_c7.gif

53 ms

iman.gif

iman.gif

53 ms

space4.gif

space4.gif

54 ms

moss.gif

moss.gif

47 ms

spacecentro.gif

spacecentro.gif

48 ms

unase.gif

unase.gif

48 ms

voluntarioshome.gif

voluntarioshome.gif

49 ms

pcrecer.gif

pcrecer.gif

50 ms

desarrollo.gif

desarrollo.gif

50 ms

space3.gif

space3.gif

82 ms

busqrapida.gif

busqrapida.gif

73 ms

go.gif

go.gif

72 ms

obrasdigi.gif

obrasdigi.gif

72 ms

Anoticias.gif

Anoticias.gif

71 ms

rurales.gif

rurales.gif

71 ms

Accessibility Review

biblioteca.org.ar accessibility score

44

Accessibility Issues

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

<input type="image"> elements do not have [alt] text

High

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

biblioteca.org.ar best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

SEO Factors

biblioteca.org.ar SEO score

67

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

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    ES

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Biblioteca.org.ar can be misinterpreted by Google and other search engines. Our service has detected that Spanish 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 Biblioteca.org.ar 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

biblioteca.org.ar

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