Tools & Wizards About Us

Report Summary

  • 46

    Performance

    Renders faster than
    64% of other websites

  • 84

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

casadellibro.es

Libros e eBooks, descuentos y envíos gratis | Casa del Libro

Page Load Speed

2.5 sec in total

First Response

308 ms

Resources Loaded

2.1 sec

Page Rendered

102 ms

About Website

Click here to check amazing Casa Del Libro content. Otherwise, check out these important facts you probably never knew about casadellibro.es

Todos los libros, eBooks y mejores eReaders están en Casa del Libro: ¡Descubre ofertas y ENVÍOS GRATIS!

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Key Findings

We analyzed Casadellibro.es page load time and found that the first response time was 308 ms and then it took 2.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

casadellibro.es performance score

46

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.4 s

72/100

10%

LCP (Largest Contentful Paint)

Value6.2 s

11/100

25%

SI (Speed Index)

Value2.7 s

96/100

10%

TBT (Total Blocking Time)

Value900 ms

31/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value11.2 s

20/100

10%

Network Requests Diagram

casadellibro.es

308 ms

www.casadellibro.com

308 ms

ON%20BOLSILLO%20VERANO%202024_180x256.webp

383 ms

9788410257184.webp

322 ms

9788466364140.webp

436 ms

Our browser made a total of 163 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Casadellibro.es, 21% (34 requests) were made to Imagessl.casadellibro.com and 13% (21 requests) were made to Staticsni.casadellibro.com. The less responsive or slowest element that took the longest time to load (1.4 sec) relates to the external source Imagessl6.casadellibro.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.1 MB (48%)

Content Size

2.2 MB

After Optimization

1.1 MB

  • HTML
  • Images

In fact, the total size of Casadellibro.es main page is 2.2 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 70% of websites need less resources to load. HTML takes 1.2 MB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 1.1 MB

  • Original 1.2 MB
  • After minification 1.2 MB
  • After compression 156.2 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 1.1 MB or 87% of the original size.

Image Optimization

-0%

Potential reduce by 2.1 kB

  • Original 976.2 kB
  • After minification 974.0 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. Casa Del Libro images are well optimized though.

Requests Breakdown

Number of requests can be reduced by 30 (19%)

Requests Now

161

After Optimization

131

  • Images
  • JavaScript

The browser has sent 161 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Casa Del Libro. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 21 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

casadellibro.es accessibility score

84

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

Buttons do not have an accessible name

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

casadellibro.es best practices score

75

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

casadellibro.es SEO score

100

Search Engine Optimization Advices

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

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 Casadellibro.es 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 Casadellibro.es 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

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