Tools & Wizards About Us
es.nicebooks.com screenshot

Report Summary

  • 66

    Performance

    Renders faster than
    79% of other websites

  • 80

    Accessibility

    Visual factors better than
    that of 49% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

es.nicebooks.com

NiceBooks, búsqueda de libros por ISBN, comparación de precios de libros

Page Load Speed

13.5 sec in total

First Response

2.9 sec

Resources Loaded

8.2 sec

Page Rendered

2.4 sec

es.nicebooks.com screenshot

About Website

Visit es.nicebooks.com now to see the best up-to-date Es Nice Books content for United States and also check out these interesting facts you probably never knew about es.nicebooks.com

NiceBooks ofrece una base de datos de millones de libros que los puedes buscar por el número de ISBN y comparar los precios de las mayores librerías en línea.

Visit es.nicebooks.com

Key Findings

We analyzed Es.nicebooks.com page load time and found that the first response time was 2.9 sec and then it took 10.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

es.nicebooks.com performance score

66

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

24/100

10%

LCP (Largest Contentful Paint)

Value4.1 s

47/100

25%

SI (Speed Index)

Value5.2 s

60/100

10%

TBT (Total Blocking Time)

Value150 ms

94/100

30%

CLS (Cumulative Layout Shift)

Value0.017

100/100

15%

TTI (Time to Interactive)

Value10.3 s

25/100

10%

Network Requests Diagram

es.nicebooks.com

2897 ms

css

60 ms

public.css

89 ms

polyfill.min.js

532 ms

axios.min.js

86 ms

Our browser made a total of 83 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Es.nicebooks.com, 65% (54 requests) were made to Images.nicebooks.com and 22% (18 requests) were made to Static.nicebooks.com. The less responsive or slowest element that took the longest time to load (3.5 sec) relates to the external source Images.nicebooks.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 50.0 kB (2%)

Content Size

2.6 MB

After Optimization

2.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Es.nicebooks.com main page is 2.6 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. 60% of websites need less resources to load. Images take 2.4 MB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 46.6 kB

  • Original 61.8 kB
  • After minification 59.8 kB
  • After compression 15.2 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 46.6 kB or 75% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 2.4 MB
  • After minification 2.4 MB

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. Es Nice Books images are well optimized though.

JavaScript Optimization

-4%

Potential reduce by 1.7 kB

  • Original 46.1 kB
  • After minification 46.0 kB
  • After compression 44.4 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. This website has mostly compressed JavaScripts.

CSS Optimization

-4%

Potential reduce by 1.7 kB

  • Original 49.3 kB
  • After minification 49.3 kB
  • After compression 47.6 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. Es.nicebooks.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 14 (18%)

Requests Now

79

After Optimization

65

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 79 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Es Nice Books. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

es.nicebooks.com

es.nicebooks.com

2897 ms

css

css

60 ms

public.css

public.css

89 ms

polyfill.min.js

polyfill.min.js

532 ms

axios.min.js

axios.min.js

86 ms

modal.js

modal.js

45 ms

public.js

public.js

85 ms

sweetalert2@10

sweetalert2@10

58 ms

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340 ms

header.png

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21 ms

logo.svg

logo.svg

21 ms

user.svg

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26 ms

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580 ms

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441 ms

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908 ms

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1090 ms

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2088 ms

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2047 ms

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2759 ms

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2848 ms

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3062 ms

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2877 ms

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3320 ms

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3069 ms

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115 ms

font

font

52 ms

font

font

59 ms

js

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112 ms

bat.js

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55 ms

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54 ms

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30 ms

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30 ms

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33 ms

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37 ms

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38 ms

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37 ms

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42 ms

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16 ms

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16 ms

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8 ms

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3156 ms

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2917 ms

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2632 ms

Accessibility Review

es.nicebooks.com accessibility score

80

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

High

Links do not have a discernible name

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.

Best Practices

es.nicebooks.com best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

High

Page has valid source maps

SEO Factors

es.nicebooks.com 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 Es.nicebooks.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 Es.nicebooks.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

es.nicebooks.com

Open Graph description is not detected on the main page of Es Nice Books. 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: