Tools & Wizards About Us
relibrea.com screenshot

Report Summary

  • 34

    Performance

    Renders faster than
    54% of other websites

  • 95

    Accessibility

    Visual factors better than
    that of 86% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 72

    SEO

    Google-friendlier than
    31% of websites

relibrea.com

RELIBREA | Compra y vende libros de segunda mano

Page Load Speed

1.9 sec in total

First Response

180 ms

Resources Loaded

1.6 sec

Page Rendered

156 ms

relibrea.com screenshot

About Website

Welcome to relibrea.com homepage info - get ready to check RELIBREA best content for Spain right away, or after learning these important things about relibrea.com

Tu comunidad de referencia, con más de 100.000 libros usados en toda España. Ahorra hasta un 70% en libros de texto, lectura e incluso comics y libros antiguos.

Visit relibrea.com

Key Findings

We analyzed Relibrea.com page load time and found that the first response time was 180 ms and then it took 1.7 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

relibrea.com performance score

34

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.1 s

47/100

10%

LCP (Largest Contentful Paint)

Value6.6 s

8/100

25%

SI (Speed Index)

Value5.6 s

53/100

10%

TBT (Total Blocking Time)

Value1,330 ms

17/100

30%

CLS (Cumulative Layout Shift)

Value0.018

100/100

15%

TTI (Time to Interactive)

Value11.6 s

18/100

10%

Network Requests Diagram

relibrea.com

180 ms

relibrea.com

614 ms

app.css

178 ms

font-awesome.min.css

51 ms

jquery-3.2.1.min.js

39 ms

Our browser made a total of 26 requests to load all elements on the main page. We found that 58% of them (15 requests) were addressed to the original Relibrea.com, 8% (2 requests) were made to Maxcdn.bootstrapcdn.com and 8% (2 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (614 ms) belongs to the original domain Relibrea.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 50.3 kB (11%)

Content Size

473.3 kB

After Optimization

423.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Relibrea.com main page is 473.3 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. 35% of websites need less resources to load. Images take 350.4 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 34.1 kB

  • Original 43.2 kB
  • After minification 31.6 kB
  • After compression 9.1 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. This page needs HTML code to be minified as it can gain 11.6 kB, which is 27% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 34.1 kB or 79% of the original size.

Image Optimization

-4%

Potential reduce by 15.3 kB

  • Original 350.4 kB
  • After minification 335.2 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. RELIBREA images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 560 B

  • Original 48.8 kB
  • After minification 48.8 kB
  • After compression 48.2 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

-1%

Potential reduce by 307 B

  • Original 30.9 kB
  • After minification 30.9 kB
  • After compression 30.6 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. Relibrea.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 9 (39%)

Requests Now

23

After Optimization

14

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 23 CSS, Javascripts, AJAX and image requests in order to completely render the main page of RELIBREA. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

relibrea.com

relibrea.com

180 ms

relibrea.com

relibrea.com

614 ms

app.css

app.css

178 ms

font-awesome.min.css

font-awesome.min.css

51 ms

jquery-3.2.1.min.js

jquery-3.2.1.min.js

39 ms

app.js

app.js

312 ms

webfont.js

webfont.js

40 ms

es6-promise@1.0.0

es6-promise@1.0.0

50 ms

jsonld.min.js

jsonld.min.js

52 ms

app2.js

app2.js

243 ms

adsbygoogle.js

adsbygoogle.js

231 ms

analytics.js

analytics.js

71 ms

relibrea-libros-logotipo.png

relibrea-libros-logotipo.png

123 ms

relibrea-home-libros-segundamano.jpg

relibrea-home-libros-segundamano.jpg

272 ms

relibrea-promo-index.jpg

relibrea-promo-index.jpg

122 ms

relibrea-bnr-1.jpg

relibrea-bnr-1.jpg

271 ms

relibrea-bnr-2.jpg

relibrea-bnr-2.jpg

261 ms

relibrea-bnr-3.jpg

relibrea-bnr-3.jpg

280 ms

relibrea-libros-logotipo.svg

relibrea-libros-logotipo.svg

274 ms

relibrea-website-sprite@1x.png

relibrea-website-sprite@1x.png

397 ms

relibrea-prensa-startup-libros@1x.png

relibrea-prensa-startup-libros@1x.png

325 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

24 ms

show_ads_impl.js

show_ads_impl.js

283 ms

collect

collect

26 ms

relibrea-home-nueva-web-compraventa2.jpg

relibrea-home-nueva-web-compraventa2.jpg

219 ms

js

js

62 ms

Accessibility Review

relibrea.com accessibility score

95

Accessibility Issues

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

Links do not have a discernible name

Best Practices

relibrea.com best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

relibrea.com SEO score

72

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

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

    UTF-8

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

relibrea.com

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