3.5 sec in total
657 ms
2.7 sec
169 ms
Click here to check amazing LibrosUNED content for Spain. Otherwise, check out these important facts you probably never knew about librosuned.com
Librería virtual oficial de la UNED. Todos los libros y otros materiales didácticos utilizados en la UNED.
Visit librosuned.comWe analyzed Librosuned.com page load time and found that the first response time was 657 ms and then it took 2.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.
librosuned.com performance score
name
value
score
weighting
Value8.9 s
0/100
10%
Value8.9 s
1/100
25%
Value9.7 s
10/100
10%
Value150 ms
94/100
30%
Value0.048
99/100
15%
Value9.5 s
30/100
10%
657 ms
495 ms
459 ms
704 ms
236 ms
Our browser made a total of 35 requests to load all elements on the main page. We found that 94% of them (33 requests) were addressed to the original Librosuned.com, 6% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (704 ms) belongs to the original domain Librosuned.com.
Page size can be reduced by 286.1 kB (47%)
613.1 kB
327.0 kB
In fact, the total size of Librosuned.com main page is 613.1 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. 25% of websites need less resources to load. Images take 243.1 kB which makes up the majority of the site volume.
Potential reduce by 23.8 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 4.4 kB, which is 14% 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 23.8 kB or 75% of the original size.
Potential reduce by 13.8 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. LibrosUNED images are well optimized though.
Potential reduce by 120.7 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 120.7 kB or 65% of the original size.
Potential reduce by 127.8 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. Librosuned.com needs all CSS files to be minified and compressed as it can save up to 127.8 kB or 84% of the original size.
Number of requests can be reduced by 9 (29%)
31
22
The browser has sent 31 CSS, Javascripts, AJAX and image requests in order to completely render the main page of LibrosUNED. 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.
librosuned.com
657 ms
Default.aspx
495 ms
ajax.js
459 ms
jquery1.11.1.min.js
704 ms
stylesheet.css
236 ms
layout2014.css
597 ms
jquery.nivo.slider.pack.js
491 ms
nivo-slider.css
489 ms
javi.css
490 ms
foundation.min.css
673 ms
modernizr.js
597 ms
WebResource.axd
368 ms
ga.js
39 ms
logotipoLU4.png
110 ms
librosuned_promo_5desc.jpg
225 ms
FondoSlider40_coleccAtlas.jpg
336 ms
FondoSlider_ColeccAstronomia.jpg
454 ms
6201305UD02.jpg
118 ms
6502206GR02A01.jpg
130 ms
6502208UD01.jpg
221 ms
6602303UD02.jpg
234 ms
6603108UD01.jpg
241 ms
6702303GR02A01.jpg
337 ms
carrito.png
332 ms
logoUNEDBrb.png
342 ms
logoFRJS.png
350 ms
bullet_alerta.png
440 ms
sprite_png8.png
437 ms
loading.gif
441 ms
proximanova-light-webfont.woff
220 ms
__utm.gif
11 ms
proximanova-bold-webfont.woff
221 ms
transparent.png
115 ms
arrows.png
120 ms
bullets.png
115 ms
librosuned.com accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
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
Links do not have a discernible name
librosuned.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Page has valid source maps
librosuned.com SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
robots.txt is not valid
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
Document doesn't use legible font sizes
Tap targets are not sized appropriately
ES
ES
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Librosuned.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 Librosuned.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.
librosuned.com
Open Graph description is not detected on the main page of LibrosUNED. 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: