Tools & Wizards About Us

Report Summary

  • 30

    Performance

    Renders faster than
    50% of other websites

  • 62

    Accessibility

    Visual factors better than
    that of 28% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 70

    SEO

    Google-friendlier than
    30% of websites

libroteca.net

Descarga Libros gratis. Literatura universal. Libros de idiomas. Grandes autores

Page Load Speed

4.7 sec in total

First Response

140 ms

Resources Loaded

4.1 sec

Page Rendered

420 ms

About Website

Visit libroteca.net now to see the best up-to-date Libroteca content for Spain and also check out these interesting facts you probably never knew about libroteca.net

Miles de libros gratuitos. Descarga de libros. Obras y autores universales

Visit libroteca.net

Key Findings

We analyzed Libroteca.net page load time and found that the first response time was 140 ms and then it took 4.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

libroteca.net performance score

30

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value0.8 s

100/100

10%

LCP (Largest Contentful Paint)

Value9.2 s

1/100

25%

SI (Speed Index)

Value8.2 s

20/100

10%

TBT (Total Blocking Time)

Value2,120 ms

7/100

30%

CLS (Cumulative Layout Shift)

Value0.029

100/100

15%

TTI (Time to Interactive)

Value16.2 s

5/100

10%

Network Requests Diagram

libroteca.net

140 ms

estilos.css

32 ms

adsbygoogle.js

6 ms

getad.php

381 ms

Titulo-azul.gif

48 ms

Our browser made a total of 82 requests to load all elements on the main page. We found that 20% of them (16 requests) were addressed to the original Libroteca.net, 17% (14 requests) were made to A.tribalfusion.com and 9% (7 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (662 ms) relates to the external source T.adonly.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 346.8 kB (49%)

Content Size

706.2 kB

After Optimization

359.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Libroteca.net main page is 706.2 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. 40% of websites need less resources to load. Javascripts take 580.1 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 66.1 kB

  • Original 87.1 kB
  • After minification 79.3 kB
  • After compression 21.1 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 66.1 kB or 76% of the original size.

Image Optimization

-28%

Potential reduce by 10.7 kB

  • Original 37.7 kB
  • After minification 27.0 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, Libroteca needs image optimization as it can save up to 10.7 kB or 28% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-46%

Potential reduce by 269.1 kB

  • Original 580.1 kB
  • After minification 579.5 kB
  • After compression 311.1 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 269.1 kB or 46% of the original size.

CSS Optimization

-79%

Potential reduce by 958 B

  • Original 1.2 kB
  • After minification 1.0 kB
  • After compression 259 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. Libroteca.net needs all CSS files to be minified and compressed as it can save up to 958 B or 79% of the original size.

Requests Breakdown

Number of requests can be reduced by 39 (51%)

Requests Now

76

After Optimization

37

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 76 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Libroteca. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 23 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

libroteca.net accessibility score

62

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

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

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

Best Practices

libroteca.net 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

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

libroteca.net SEO score

70

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

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

    ES

  • Language Claimed

    ES

  • Encoding

    WINDOWS-1252

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Libroteca.net 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 Libroteca.net main page’s claimed encoding is windows-1252. 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 Libroteca. 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: