Tools & Wizards About Us
es.nicebooks.com screenshot

Report Summary

  • 64

    Performance

    Renders faster than
    78% of other websites

  • 80

    Accessibility

    Visual factors better than
    that of 50% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 100

    SEO

    Google-friendlier than
    95% of websites

es.nicebooks.com

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

Page Load Speed

3.8 sec in total

First Response

256 ms

Resources Loaded

3.4 sec

Page Rendered

196 ms

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 256 ms and then it took 3.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

es.nicebooks.com performance score

64

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

36/100

10%

LCP (Largest Contentful Paint)

Value4.2 s

45/100

25%

SI (Speed Index)

Value3.7 s

86/100

10%

TBT (Total Blocking Time)

Value310 ms

77/100

30%

CLS (Cumulative Layout Shift)

Value0.017

100/100

15%

TTI (Time to Interactive)

Value10.4 s

24/100

10%

Network Requests Diagram

es.nicebooks.com

256 ms

es.nicebooks.com

529 ms

public.css

680 ms

jquery.lightbox-0.5.css

374 ms

css

58 ms

Our browser made a total of 77 requests to load all elements on the main page. We found that 5% of them (4 requests) were addressed to the original Es.nicebooks.com, 62% (48 requests) were made to Nicebooks.sizeapi.com and 18% (14 requests) were made to Nicebooks.com. The less responsive or slowest element that took the longest time to load (1.5 sec) relates to the external source Nicebooks.sizeapi.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 274.6 kB (41%)

Content Size

675.5 kB

After Optimization

401.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Es.nicebooks.com main page is 675.5 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. 35% of websites need less resources to load. Images take 300.3 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 22.5 kB

  • Original 28.8 kB
  • After minification 18.6 kB
  • After compression 6.3 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 10.2 kB, which is 35% 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 22.5 kB or 78% of the original size.

Image Optimization

-3%

Potential reduce by 8.2 kB

  • Original 300.3 kB
  • After minification 292.2 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. Es Nice Books images are well optimized though.

JavaScript Optimization

-62%

Potential reduce by 150.2 kB

  • Original 241.6 kB
  • After minification 226.7 kB
  • After compression 91.5 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 150.2 kB or 62% of the original size.

CSS Optimization

-89%

Potential reduce by 93.7 kB

  • Original 104.7 kB
  • After minification 76.1 kB
  • After compression 11.1 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 needs all CSS files to be minified and compressed as it can save up to 93.7 kB or 89% of the original size.

Requests Breakdown

Number of requests can be reduced by 17 (24%)

Requests Now

72

After Optimization

55

  • Images
  • JavaScript
  • CSS

The browser has sent 72 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 6 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

es.nicebooks.com

es.nicebooks.com

256 ms

es.nicebooks.com

es.nicebooks.com

529 ms

public.css

public.css

680 ms

jquery.lightbox-0.5.css

jquery.lightbox-0.5.css

374 ms

css

css

58 ms

css

css

69 ms

css

css

90 ms

jquery.min.js

jquery.min.js

632 ms

fastclick.js

fastclick.js

487 ms

foundation.min.js

foundation.min.js

662 ms

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2a0f8d04a21f9b030828f713499c6c934fbacca3

337 ms

brick.png

brick.png

190 ms

sizeapi.svg

sizeapi.svg

261 ms

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333 ms

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327 ms

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324 ms

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328 ms

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329 ms

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522 ms

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526 ms

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522 ms

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533 ms

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526 ms

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518 ms

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720 ms

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720 ms

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715 ms

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724 ms

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726 ms

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731 ms

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923 ms

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918 ms

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919 ms

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913 ms

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923 ms

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934 ms

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1109 ms

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1419 ms

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1118 ms

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1112 ms

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1123 ms

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1129 ms

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1308 ms

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1310 ms

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1313 ms

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1323 ms

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1327 ms

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1510 ms

header.png

header.png

164 ms

es.gif

es.gif

164 ms

ca.gif

ca.gif

164 ms

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de.gif

164 ms

fr.gif

fr.gif

164 ms

gb.gif

gb.gif

231 ms

it.gif

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230 ms

us.gif

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231 ms

footer.png

footer.png

233 ms

bat.js

bat.js

73 ms

analytics.js

analytics.js

77 ms

fbevents.js

fbevents.js

300 ms

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cJZKeOuBrn4kERxqtaUH3T8E0i7KZn-EPnyo3HZu7kw.woff

91 ms

font

font

108 ms

toadOcfmlt9b38dHJxOBGMa9awK0IKUjIWABZIchFI8.woff

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118 ms

collect

collect

19 ms

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1212 ms

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1207 ms

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1222 ms

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1221 ms

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1318 ms

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1404 ms

107 ms

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1216 ms

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1210 ms

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1226 ms

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1222 ms

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1314 ms

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1398 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: