2.1 sec in total
423 ms
1.6 sec
135 ms
Visit vega.sanger.ac.uk now to see the best up-to-date Vega Sanger content for China and also check out these interesting facts you probably never knew about vega.sanger.ac.uk
Visit vega.sanger.ac.ukWe analyzed Vega.sanger.ac.uk page load time and found that the first response time was 423 ms and then it took 1.7 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.
vega.sanger.ac.uk performance score
name
value
score
weighting
Value2.7 s
59/100
10%
Value2.8 s
82/100
25%
Value4.3 s
77/100
10%
Value130 ms
96/100
30%
Value0
100/100
15%
Value5.4 s
71/100
10%
423 ms
109 ms
314 ms
159 ms
547 ms
Our browser made a total of 20 requests to load all elements on the main page. We found that 75% of them (15 requests) were addressed to the original Vega.sanger.ac.uk, 25% (5 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (547 ms) belongs to the original domain Vega.sanger.ac.uk.
Page size can be reduced by 750.9 kB (57%)
1.3 MB
576.2 kB
In fact, the total size of Vega.sanger.ac.uk main page is 1.3 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. 15% of websites need less resources to load. Javascripts take 796.2 kB which makes up the majority of the site volume.
Potential reduce by 27.0 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 4.8 kB, which is 15% 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 27.0 kB or 82% of the original size.
Potential reduce by 296 B
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. Vega Sanger images are well optimized though.
Potential reduce by 552.2 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 552.2 kB or 69% of the original size.
Potential reduce by 171.4 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. Vega.sanger.ac.uk needs all CSS files to be minified and compressed as it can save up to 171.4 kB or 70% of the original size.
Number of requests can be reduced by 3 (17%)
18
15
The browser has sent 18 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vega Sanger. 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.
vega.sanger.ac.uk
423 ms
index.html
109 ms
04454e66054a4325b44c25caebbb9b10.css
314 ms
465849e9779693b524d9635c453b2e6b.image.css
159 ms
4c12335bd73088d35b443342d9b73202.js
547 ms
7efbe1ce0f5c4958630df1b69f4993e2.js
268 ms
Mus_musculus.png
192 ms
Rattus_norvegicus.png
233 ms
vega.gif
83 ms
b374278bc944ed317ef2cb1f740147f9.png
394 ms
fd2a5decac4da7ba80972fdf51d2dfc7.jpg
349 ms
analytics.js
72 ms
accounts_dropdown
137 ms
piwik2.js
80 ms
__utm.gif
88 ms
linkid.js
11 ms
collect
11 ms
collect
11 ms
piwik.php
245 ms
collect
11 ms
vega.sanger.ac.uk 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.
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
Image elements do not have [alt] attributes
Form elements do not have associated labels
Links do not have a discernible name
Tables and lists
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Impact
Issue
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Some elements have a [tabindex] value greater than 0
vega.sanger.ac.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
Missing source maps for large first-party JavaScript
vega.sanger.ac.uk 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 uses legible font sizes
Tap targets are not sized appropriately
EN
EN
ISO-8859-1
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Vega.sanger.ac.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 Vega.sanger.ac.uk 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.
vega.sanger.ac.uk
Open Graph description is not detected on the main page of Vega Sanger. 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: