Tools & Wizards About Us

Report Summary

  • 78

    Performance

    Renders faster than
    85% of other websites

  • 77

    Accessibility

    Visual factors better than
    that of 44% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 58

    SEO

    Google-friendlier than
    21% of websites

mundolibros.com

Buscador Libros usados Buscar libros descatalogados Librerias usados

Page Load Speed

5 sec in total

First Response

2.2 sec

Resources Loaded

2.7 sec

Page Rendered

117 ms

About Website

Visit mundolibros.com now to see the best up-to-date Mundo Libros content and also check out these interesting facts you probably never knew about mundolibros.com

Buscador de Libros. Busc9.89.178ar libros descatalogados, libros usados, libros antiguos. Librerias de usados.

Visit mundolibros.com

Key Findings

We analyzed Mundolibros.com page load time and found that the first response time was 2.2 sec and then it took 2.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

mundolibros.com performance score

78

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.3 s

74/100

10%

LCP (Largest Contentful Paint)

Value2.6 s

88/100

25%

SI (Speed Index)

Value2.3 s

99/100

10%

TBT (Total Blocking Time)

Value520 ms

56/100

30%

CLS (Cumulative Layout Shift)

Value0.006

100/100

15%

TTI (Time to Interactive)

Value5.7 s

68/100

10%

Network Requests Diagram

mundolibros.com

2206 ms

www.mundolibros.com

87 ms

estilos.css

28 ms

adsbygoogle.js

106 ms

show_ads.js

70 ms

Our browser made a total of 21 requests to load all elements on the main page. We found that 86% of them (18 requests) were addressed to the original Mundolibros.com, 14% (3 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (2.2 sec) belongs to the original domain Mundolibros.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 347.3 kB (54%)

Content Size

639.6 kB

After Optimization

292.3 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Mundolibros.com main page is 639.6 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. Only 10% of websites need less resources to load. Javascripts take 586.8 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 18.0 kB

  • Original 22.7 kB
  • After minification 20.4 kB
  • After compression 4.8 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 18.0 kB or 79% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 28.8 kB
  • After minification 28.8 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. Mundo Libros images are well optimized though.

JavaScript Optimization

-56%

Potential reduce by 328.4 kB

  • Original 586.8 kB
  • After minification 586.8 kB
  • After compression 258.4 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 328.4 kB or 56% of the original size.

CSS Optimization

-77%

Potential reduce by 926 B

  • Original 1.2 kB
  • After minification 1.1 kB
  • After compression 276 B

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. Mundolibros.com needs all CSS files to be minified and compressed as it can save up to 926 B or 77% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

19

After Optimization

19

  • Images
  • JavaScript
  • CSS

The browser has sent 19 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Mundo Libros. According to our analytics all requests are already optimized.

Network Requests Diagram

Accessibility Review

mundolibros.com accessibility score

77

Accessibility Issues

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

Best Practices

mundolibros.com best practices score

58

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

Serves images with low resolution

General

Impact

Issue

High

Browser errors were logged to the console

High

Page has valid source maps

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

mundolibros.com SEO score

58

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

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

    ES

  • Encoding

    ISO-8859-1

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