Tools & Wizards About Us
freelibros.org screenshot

Report Summary

  • 57

    Performance

    Renders faster than
    74% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 69% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 85

    SEO

    Google-friendlier than
    55% of websites

freelibros.org

FreeLibros – Tu Biblioteca Virtual

Page Load Speed

2.1 sec in total

First Response

54 ms

Resources Loaded

1.4 sec

Page Rendered

595 ms

freelibros.org screenshot

About Website

Visit freelibros.org now to see the best up-to-date Free Libros content for Mexico and also check out these interesting facts you probably never knew about freelibros.org

FreeLibros es una biblioteca virtual para compartir libros en diferentes formatos para los estudiantes y amantes de la lectura, con descargas desde mega, drive.

Visit freelibros.org

Key Findings

We analyzed Freelibros.org page load time and found that the first response time was 54 ms and then it took 2 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

freelibros.org performance score

57

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

38/100

10%

LCP (Largest Contentful Paint)

Value3.6 s

59/100

25%

SI (Speed Index)

Value5.1 s

62/100

10%

TBT (Total Blocking Time)

Value570 ms

52/100

30%

CLS (Cumulative Layout Shift)

Value0.164

72/100

15%

TTI (Time to Interactive)

Value6.9 s

54/100

10%

Network Requests Diagram

freelibros.org

54 ms

freelibros.org

268 ms

www.freelibros.net

23 ms

www.freelibros.net

393 ms

css

49 ms

Our browser made a total of 34 requests to load all elements on the main page. We found that 6% of them (2 requests) were addressed to the original Freelibros.org, 79% (27 requests) were made to Freelibros.net and 3% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (393 ms) relates to the external source Freelibros.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 91.7 kB (24%)

Content Size

385.5 kB

After Optimization

293.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Freelibros.org main page is 385.5 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. 25% of websites need less resources to load. Javascripts take 158.8 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 86.3 kB

  • Original 106.4 kB
  • After minification 106.4 kB
  • After compression 20.1 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 86.3 kB or 81% of the original size.

Image Optimization

-7%

Potential reduce by 5.3 kB

  • Original 70.8 kB
  • After minification 65.5 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. Free Libros images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 124 B

  • Original 158.8 kB
  • After minification 158.8 kB
  • After compression 158.7 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. This website has mostly compressed JavaScripts.

CSS Optimization

-0%

Potential reduce by 0 B

  • Original 49.5 kB
  • After minification 49.5 kB
  • After compression 49.5 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. Freelibros.org has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 10 (36%)

Requests Now

28

After Optimization

18

  • Images
  • JavaScript
  • CSS

The browser has sent 28 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Free Libros. 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 as a result speed up the page load time.

Network Requests Diagram

freelibros.org

freelibros.org

54 ms

freelibros.org

freelibros.org

268 ms

www.freelibros.net

www.freelibros.net

23 ms

www.freelibros.net

www.freelibros.net

393 ms

css

css

49 ms

2d4fd.css

2d4fd.css

23 ms

ac6d9.css

ac6d9.css

30 ms

cf18c.js

cf18c.js

36 ms

70bda.js

70bda.js

109 ms

4720d.js

4720d.js

35 ms

545b0.js

545b0.js

39 ms

2b11c.js

2b11c.js

36 ms

api.js

api.js

148 ms

b441f.js

b441f.js

42 ms

f97d6.js

f97d6.js

288 ms

OneSignalSDK.js

OneSignalSDK.js

119 ms

e-202420.js

e-202420.js

29 ms

suv4.js

suv4.js

148 ms

wp-emoji-release.min.js

wp-emoji-release.min.js

83 ms

logo-freelibros-oficial.png

logo-freelibros-oficial.png

43 ms

arrow-right-blue-light.png

arrow-right-blue-light.png

42 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

327 ms

4db846976d64d27cffba56d713538f375bab8546-142x175.jpg

4db846976d64d27cffba56d713538f375bab8546-142x175.jpg

11 ms

6a7a9db537d10730fc3462d59381130edd672ada-142x175.jpg

6a7a9db537d10730fc3462d59381130edd672ada-142x175.jpg

41 ms

4db846976d64d27cffba56d713538f375bab8546-72x70.jpg

4db846976d64d27cffba56d713538f375bab8546-72x70.jpg

14 ms

6a7a9db537d10730fc3462d59381130edd672ada-72x70.jpg

6a7a9db537d10730fc3462d59381130edd672ada-72x70.jpg

15 ms

3cd2faa7427388524db9d3cc46b9c97e58e84ba4-72x70.jpg

3cd2faa7427388524db9d3cc46b9c97e58e84ba4-72x70.jpg

13 ms

504dac014fa62c1a104e66e4c7f428b177f38f2e-72x70.jpg

504dac014fa62c1a104e66e4c7f428b177f38f2e-72x70.jpg

10 ms

e8db9ee3e52ffe7105b02405f653dc198d3b478a-72x70.jpg

e8db9ee3e52ffe7105b02405f653dc198d3b478a-72x70.jpg

21 ms

1ce4816b6db67bef50813cc28d11a99d0d40c3ea-142x175.jpg

1ce4816b6db67bef50813cc28d11a99d0d40c3ea-142x175.jpg

20 ms

1ce4816b6db67bef50813cc28d11a99d0d40c3ea-72x70.jpg

1ce4816b6db67bef50813cc28d11a99d0d40c3ea-72x70.jpg

22 ms

980c36d90ef4d8e66bf6227c655eef90a2dd29a9-72x70.jpg

980c36d90ef4d8e66bf6227c655eef90a2dd29a9-72x70.jpg

24 ms

0b22c528bae2a58ef616a1a87e906243d63c6aad-72x70.jpg

0b22c528bae2a58ef616a1a87e906243d63c6aad-72x70.jpg

23 ms

d4c4320e54f40b3d818da599903e242955a743a6-72x70.jpg

d4c4320e54f40b3d818da599903e242955a743a6-72x70.jpg

30 ms

Accessibility Review

freelibros.org accessibility score

88

Accessibility Issues

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

<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.

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

Best Practices

freelibros.org 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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

freelibros.org SEO score

85

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

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

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Freelibros.org 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 Freelibros.org 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

freelibros.org

Open Graph data is detected on the main page of Free Libros. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: