4.4 sec in total
1.5 sec
2.7 sec
174 ms
Click here to check amazing Portico content for United Kingdom. Otherwise, check out these important facts you probably never knew about portico.bl.uk
We are the national library of the UK
Visit portico.bl.ukWe analyzed Portico.bl.uk page load time and found that the first response time was 1.5 sec 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.
portico.bl.uk performance score
name
value
score
weighting
Value4.1 s
21/100
10%
Value8.9 s
1/100
25%
Value7.0 s
32/100
10%
Value1,350 ms
17/100
30%
Value0.18
67/100
15%
Value12.7 s
14/100
10%
1512 ms
170 ms
253 ms
173 ms
173 ms
Our browser made a total of 69 requests to load all elements on the main page. We found that 38% of them (26 requests) were addressed to the original Portico.bl.uk, 7% (5 requests) were made to Pbs.twimg.com and 7% (5 requests) were made to Platform.twitter.com. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Portico.bl.uk.
Page size can be reduced by 360.6 kB (24%)
1.5 MB
1.2 MB
In fact, the total size of Portico.bl.uk main page is 1.5 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. 45% of websites need less resources to load. Images take 1.1 MB which makes up the majority of the site volume.
Potential reduce by 60.9 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 60.9 kB or 82% of the original size.
Potential reduce by 61.0 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. Portico images are well optimized though.
Potential reduce by 217.9 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 217.9 kB or 69% of the original size.
Potential reduce by 20.9 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. Portico.bl.uk needs all CSS files to be minified and compressed as it can save up to 20.9 kB or 79% of the original size.
Number of requests can be reduced by 39 (60%)
65
26
The browser has sent 65 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Portico. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 19 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.
portico.bl.uk
1512 ms
blglobal.min.css
170 ms
homepage.min.css
253 ms
redirection_mobile.min.js
173 ms
global.min.js
173 ms
jquery-1.5.1.min.js
171 ms
jquery.cookie.js
171 ms
homepage-1.1.js
111 ms
jquery.hoverIntent.min.js
112 ms
jquery.cycle.all.latest.min.js
538 ms
softclick.js
494 ms
buttons.js
10 ms
sitestat.min.js
494 ms
widgets.js
101 ms
spacer.gif
101 ms
bl_logo_100.gif
99 ms
homepagebanner.gif
101 ms
gored.gif
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shakespeare-carousel_853x325.jpg
556 ms
arrowwhite.gif
189 ms
8114-Alice-adult-learning-Carousel.jpg
423 ms
home-carousel-bl-labs-comp-winner-01.jpg
554 ms
Fundraising-DM__HomepageCarousel.jpg
555 ms
Alice_Exhibition_products__HomepageCarousel.jpg
659 ms
home-iow-mercator-atlas-england-c29-c%2013.jpg
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Mother's-Day-header-100px%20(1).jpg
610 ms
shakespeare-news_100x60.jpg
581 ms
Fundraising-DM_News-item100x60.jpg
602 ms
britishlibrary_newton.jpg
606 ms
gtm.js
36 ms
universal.html
137 ms
homepagesprite.png
655 ms
ga.js
46 ms
conversion_async.js
46 ms
oct.js
86 ms
__utm.gif
32 ms
65 ms
adsct
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adsct
61 ms
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__utm.gif
90 ms
spacer.gif
85 ms
timeline.1b43d11859b7663a2225b885f87704a5.js
135 ms
getAllAppDefault.esi
110 ms
syndication
126 ms
347304647112945664
165 ms
getSegment.php
22 ms
checkOAuth.esi
4 ms
t.dhj
55 ms
t.dhj
93 ms
s
184 ms
cm
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timeline.4d087f49a21e27038d9769d7c976b8fa.default.css
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timeline.4d087f49a21e27038d9769d7c976b8fa.default.css
39 ms
s-3271.xgi
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hbpix
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logovbigsquare_normal.gif
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E070014_for_Twitter_normal.JPG
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Twitter_Dore_Street_c13856-01_normal.jpg
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blake_normal.jpg
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ltXM3QN8_normal.jpg
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pixel
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52154.gif
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2981
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blglobalprint.min.css
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portico.bl.uk accessibility score
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.
portico.bl.uk 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
portico.bl.uk SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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 uses legible font sizes
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Portico.bl.uk can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Portico.bl.uk 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.
portico.bl.uk
Open Graph description is not detected on the main page of Portico. 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: