3.2 sec in total
418 ms
2.5 sec
272 ms
Click here to check amazing OPAC content. Otherwise, check out these important facts you probably never knew about opac.net
Visit opac.netWe analyzed Opac.net page load time and found that the first response time was 418 ms and then it took 2.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.
opac.net performance score
name
value
score
weighting
Value7.6 s
0/100
10%
Value36.7 s
0/100
25%
Value19.6 s
0/100
10%
Value1,150 ms
22/100
30%
Value0.408
24/100
15%
Value28.1 s
0/100
10%
418 ms
641 ms
248 ms
258 ms
45 ms
Our browser made a total of 32 requests to load all elements on the main page. We found that 91% of them (29 requests) were addressed to the original Opac.net, 6% (2 requests) were made to Ajax.googleapis.com and 3% (1 request) were made to Netdna.bootstrapcdn.com. The less responsive or slowest element that took the longest time to load (1.4 sec) belongs to the original domain Opac.net.
Page size can be reduced by 719.7 kB (37%)
1.9 MB
1.2 MB
In fact, the total size of Opac.net 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. 35% of websites need less resources to load. Images take 1.7 MB which makes up the majority of the site volume.
Potential reduce by 9.4 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 2.6 kB, which is 23% 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 9.4 kB or 82% of the original size.
Potential reduce by 584.4 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. Obviously, OPAC needs image optimization as it can save up to 584.4 kB or 34% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 21.9 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 21.9 kB or 35% of the original size.
Potential reduce by 104.0 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. Opac.net needs all CSS files to be minified and compressed as it can save up to 104.0 kB or 84% of the original size.
Number of requests can be reduced by 3 (11%)
27
24
The browser has sent 27 CSS, Javascripts, AJAX and image requests in order to completely render the main page of OPAC. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.
opac.net
418 ms
bootstrap.min.css
641 ms
custom.css
248 ms
count.js
258 ms
jquery.min.js
45 ms
bootstrap.min.js
10 ms
starter-template.css
256 ms
ie-emulation-modes-warning.js
274 ms
jquery.min.js
68 ms
bootstrap.min.js
271 ms
ie10-viewport-bug-workaround.js
361 ms
opac1.jpg
638 ms
00.jpg
409 ms
00tactil.jpg
394 ms
01.jpg
430 ms
02.jpg
485 ms
03.jpg
436 ms
04.jpg
652 ms
05.jpg
662 ms
06.jpg
716 ms
07.jpg
716 ms
08.jpg
726 ms
09.jpg
763 ms
10.jpg
903 ms
11.jpg
913 ms
12.jpg
987 ms
13.jpg
989 ms
14.jpg
965 ms
15.jpg
890 ms
16.jpg
1400 ms
17.jpg
1156 ms
18.jpg
1039 ms
opac.net accessibility score
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
Buttons do not have an accessible name
<frame> or <iframe> elements do not have a title
Image elements do not have [alt] attributes
Links do not have a discernible name
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
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
opac.net 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
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
opac.net SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
Image elements do not have [alt] attributes
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
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Opac.net can be misinterpreted by Google and other search engines. Our service has detected that Spanish is used on the page, and it does not match the claimed English language. Our system also found out that Opac.net 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.
opac.net
Open Graph description is not detected on the main page of OPAC. 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: