Analyze Biblioteca del Congreso de la Nación

La Biblioteca del Congreso de la Nación, facilita el acceso a la información en forma gratuita mediante la gestión de recursos bibliográficos y tecnológicos

Page load speed analysis

  • 56/100

    Normal result
  • 7

    Successful tests
  • 1

    Failed test
  • First response

    1.2 sec

  • Resources loaded

    3.1 sec

  • Page rendered

    681 ms

  • Total page load time

    5 sec

Visit now to see the best up-to-date Bcn content for Argentina 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 1.2 sec and then it took 3.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Page optimization

  • HTML 73.8 kB
    Images 2.1 MB
    Javascripts 354.5 kB
    CSS 229.4 kB

    In fact, the total size of main page is 2.7 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 2.1 MB which makes up the majority of the site volume.

    • Original 73.8 kB
    • After minification 64.2 kB
    • After compression 10.4 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 9.6 kB, which is 13% 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 63.4 kB or 86% of the original size.

    • Original 2.1 MB
    • After optimization 2.0 MB

    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. Bcn images are well optimized though.

    • Original 354.5 kB
    • After minification 302.2 kB
    • After compression 97.6 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 256.9 kB or 72% of the original size.

    • Original 229.4 kB
    • After minification 185.2 kB
    • After compression 28.2 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 201.2 kB or 88% of the original size.

Network requests diagram

  • bootstrap.css
  • animate.css
  • shop-homepage.css
  • style.css
  • style_marrones.css
  • css
  • css
  • css
  • jquery-1.11.0.js
  • jquery.mousewheel-3.0.6.pack.js
  • jquery.fancybox.js
  • jquery.fancybox.css
  • jquery.fancybox-buttons.css
  • jquery.fancybox-buttons.js
  • jquery.fancybox-thumbs.css
  • jquery.fancybox-thumbs.js
  • jquery.fancybox-media.js
  • bootstrap.min.js
  • jqBootstrapValidation.js
  • contact_me.js
  • jquery.elastic.source.js
  • jquery.zoom.js
  • scripts.js
  • timthumb.php
  • bg_top_1.jpg
  • imagen_debajo_del%20logo%20BCN.jpg
  • timthumb.php
  • timthumb.php
  • timthumb.php
  • timthumb.php
  • timthumb.php
  • timthumb.php
  • banner-video-institucional-2015.jpg
  • bannercodigocivilycomercial11.jpg
  • bannercodigoelectoralABRIL1b.jpg
  • Banner_columnaInstituional_3.jpg
  • suscribite%20agenda%20cultural-01.jpg
  • Banner_Informesss.jpg
  • timthumb.php
  • timthumb.php
  • timthumb.php
  • timthumb.php
  • timthumb.php
  • timthumb.php
  • pie-de-pagina-textogrande.jpg
  • YDAoLskQQ5MOAgvHUQCcLRTHiN2BPBirwIkMLKUspj4.woff
  • We_iSDqttE3etzfdfhuPRVMR8FhBa8rkfAKaPBwAU3s.woff
  • We_iSDqttE3etzfdfhuPRYa6iXjgqaxY3DU3RqApPOI.woff
  • We_iSDqttE3etzfdfhuPRWwXwFHHZlCwprwJOQ-Se7k.woff
  • UyYrYy3ltEffJV9QueSi4RdbPw3QSf9R-kE0EsQUn2A.woff
  • Q_pTky3Sc3ubRibGToTAYiylde52zikAzebNtJS89aM.woff
  • glyphicons-halflings-regular.woff
  • analytics.js
  • ga.js
  • fancybox_overlay.png
  • logo.jpg
  • fancybox_sprite.png
  • fancybox_loading.gif
  • collect
  • __utm.gif
  • collect
  • collect

Our browser made a total of 63 requests to load all elements on the main page. We found that 76% of them (48 requests) were addressed to the original, 10% (6 requests) were made to and 6% (4 requests) were made to The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain

Additional info on


The browser has sent 53 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Bcn. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and from 11 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 1 other domain. 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.

Normal result

IP Trace

DNS records

Type Host Target/ip TTL Other
A 86400
NS 86396

10800 Mname:
Serial: 2004081716
Refresh: 86400
Retry: 86400
Expire: 1296000
Minimum-ttl: 10800
MX 86400 Pri: 10

86400 Txt: v=spf1 mx ip4: -all

Language and encoding

Good result


ES es language flag


ES es 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 Spanish is used on the page, and it matches the claimed language. Our system also found out that 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.

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.

Normal result

Visitor World Map

Country of origin for 90.1% of all visits is Argentina. It’s good for that their server is also located in Argentina, as that enables the majority of their visitors to benefit from a much faster page load time.

Good result

Good result

Social Sharing Optimization

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

Share this report in social media

Analyze another website