Analyze Escola | Colégio São João Batista de Nova Friburgo | Rio de Janeiro

Da Educação Infantil Bilíngue ao Pré-vestibular que mais aprova, o Colégio Sâo João Batista tem como objetivo uma formação plena...

Page load speed analysis

  • 46/100

    Normal result
  • 4

    Successful tests
  • 4

    Failed tests
  • First response

    1.6 sec

  • Resources loaded

    14.3 sec

  • Page rendered

    181 ms

  • Total page load time

    16.1 sec

Visit now to see the best up-to-date Csjb content for Brazil and also check out these interesting facts you probably never knew about

We analyzed page load time and found that the first response time was 1.6 sec and then it took 14.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Page optimization

  • HTML 31.9 kB
    Images 1.3 MB
    Javascripts 326.2 kB
    CSS 251.0 kB

    In fact, the total size of main page is 1.9 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. 30% of websites need less resources to load. Images take 1.3 MB which makes up the majority of the site volume.

    • Original 31.9 kB
    • After minification 25.8 kB
    • After compression 5.8 kB

    HTML optimization

    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 6.1 kB, which is 19% 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 26.1 kB or 82% of the original size.

    • Original 1.3 MB
    • After optimization 964.0 kB

    Image optimization

    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. Obviously, Csjb needs image optimization as it can save up to 363.9 kB or 27% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

    • Original 326.2 kB
    • After minification 319.6 kB
    • After compression 109.4 kB

    JavaScript optimization

    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 216.8 kB or 66% of the original size.

    • Original 251.0 kB
    • After minification 249.3 kB
    • After compression 43.3 kB

    CSS optimization

    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. needs all CSS files to be minified and compressed as it can save up to 207.7 kB or 83% of the original size.

Network requests diagram

  • geral.css
  • index.css
  • caption.css
  • jquery-1.3.2.min.js
  • jcaption.js
  • facebox.css
  • facebox.js
  • jan.js
  • imageslideshow.js
  • ga.js
  • __utm.gif
  • logo_csjb.png
  • faixa_azul.gif
  • l_ensinomedico.png
  • l_ensinofundamental.png
  • l_extensivotematico.png
  • l_educacaoinfantil.png
  • l_rpm.png
  • l_historia.png
  • l_infraestrutura.png
  • l_educadores.png
  • l_downloads.png
  • l_depoimentos.png
  • l_noticias.png
  • l_galeriadefotos.png
  • l_materialdidatico.png
  • l_preinscricao.png
  • l_contato.png
  • l_trabalheconosco.png
  • facebook.png
  • twitter.png
  • googleplus.png
  • youtube.png
  • abedassociado.gif
  • 174173amostraedital2016.jpg
  • 157AMOSTRAENEM1.jpg
  • 145145ENSINOMEDICO.jpg
  • 1671lugar_uerj2015.jpg
  • 169niteroimed.jpg
  • 146listasmaterial2016.jpg
  • f_topo.png
  • p04.jpg
  • 145BANNERSITE01.jpg
  • sdk.js
  • 10FUNDAMENTAL%20II.jpg
  • 13750X90X72-NOVO-RPM.jpg
  • closelabel.gif
  • loading.gif
  • tl.png
  • www-embed-player-vfl8xM8me.css
  • www-embed-player.js
  • xd_arbiter.php
  • xd_arbiter.php
  • Lrq7Jibxdtv2QOPyDSqncpDfQFNs3PE6SoUrUNh2GTU.js
  • ad_status.js
  • zN7GBFwfMP4uA6AR0HCoLQ.ttf
  • RxZJdnzeo3R5zSexge8UUaCWcynf_cDxXwCLxiixG1c.ttf
  • b.png
  • tr.png
  • bl.png
  • br.png
  • 144b_ensinomedico.png
  • 9BILINGUE.jpg
  • 12750X90X72ENSINOMEDICO.jpg

Our browser made a total of 67 requests to load all elements on the main page. We found that 81% of them (54 requests) were addressed to the original, 3% (2 requests) were made to and 3% (2 requests) were made to The less responsive or slowest element that took the longest time to load (9.9 sec) belongs to the original domain

Additional info on


The browser has sent 64 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Csjb. 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 from 5 to 1 for CSS and as a result speed up the page load time.











Possible request optimization













Normal result

IP address uses IP address which is currently shared with 4 other domains. The more sites share the same IP address, the higher the host server’s workload is. It is strongly recommended that the host server should be changed or the hosting provider should be requested to give a different (separate) IP address for this domain.

Poor result

IP Trace

DNS records

Type Host Target/ip TTL Other
A 300
NS 300
NS 300

300 Mname:
Serial: 2021060800
Refresh: 86400
Retry: 7200
Expire: 3600000
Minimum-ttl: 86400
MX 300 Pri: 0

Language and encoding

Normal result


PT pt language flag


PT pt language flag





Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise can be misinterpreted by Google and other search engines. Our service has detected that Portuguese is used on the page, and it matches the claimed language. Our system also found out that main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

HTTPS certificate

SSL Certificate has no SSL certificate. Web browsing can be safer with HTTPS connection, so we suggest that it should be obtained for this site.

Poor result

Visitor World Map

Country of origin for 100% of all visits is Brazil. It lies approximately 6570 miles away from the server location (Israel) and such a long distance can negatively affect website speed, as it takes some time for data to travel back and forth between those places. That’s why one of the best ways to speed up page load time for the majority of users is moving the server to Brazil or just closer to the user base.

Poor result

Poor result

Social Sharing Optimization

Open Graph description is not detected on the main page of Csjb. 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:

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