3.8 sec in total
90 ms
3.4 sec
266 ms
Visit ncbi.nlm.nih.gov now to see the best up-to-date Ncbi Nlm Nih content for China and also check out these interesting facts you probably never knew about ncbi.nlm.nih.gov
Visit ncbi.nlm.nih.govWe analyzed Ncbi.nlm.nih.gov page load time and found that the first response time was 90 ms and then it took 3.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.
ncbi.nlm.nih.gov performance score
name
value
score
weighting
Value2.8 s
55/100
10%
Value3.6 s
61/100
25%
Value2.8 s
95/100
10%
Value350 ms
73/100
30%
Value0.049
99/100
15%
Value6.8 s
55/100
10%
90 ms
115 ms
71 ms
19 ms
29 ms
Our browser made a total of 34 requests to load all elements on the main page. We found that 94% of them (32 requests) were addressed to the original Ncbi.nlm.nih.gov, 6% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (2.8 sec) belongs to the original domain Ncbi.nlm.nih.gov.
Page size can be reduced by 864.8 kB (74%)
1.2 MB
308.5 kB
In fact, the total size of Ncbi.nlm.nih.gov main page is 1.2 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. 25% of websites need less resources to load. Javascripts take 984.8 kB which makes up the majority of the site volume.
Potential reduce by 57.4 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. 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 57.4 kB or 86% of the original size.
Potential reduce by 3.5 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, Ncbi Nlm Nih needs image optimization as it can save up to 3.5 kB or 27% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 718.4 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 718.4 kB or 73% of the original size.
Potential reduce by 85.6 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. Ncbi.nlm.nih.gov needs all CSS files to be minified and compressed as it can save up to 85.6 kB or 79% of the original size.
Number of requests can be reduced by 20 (63%)
32
12
The browser has sent 32 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ncbi Nlm Nih. 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 from 6 to 1 for CSS and as a result speed up the page load time.
ncbi.nlm.nih.gov
90 ms
www.ncbi.nlm.nih.gov
115 ms
jig.min.js
71 ms
normalize.css
19 ms
standard_base.css
29 ms
new_grid.css
50 ms
homepage.css
60 ms
page.css
59 ms
InstrumentPageStarterJS.js
393 ms
hfjs2.js
394 ms
jig.min.css
52 ms
28977
431 ms
arrow-sprite.png
38 ms
2375536
430 ms
3242381
56 ms
submit.svg
40 ms
download.svg
38 ms
learn.svg
41 ms
develop.svg
43 ms
analyze.svg
47 ms
research.svg
44 ms
12285
410 ms
218235
54 ms
218233
411 ms
12244
409 ms
3418709
2808 ms
footer_imgs.png
380 ms
stat
353 ms
analytics.js
357 ms
alerts.js
335 ms
news.cgi
861 ms
stat
78 ms
clear.png
18 ms
collect
13 ms
ncbi.nlm.nih.gov 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.
ncbi.nlm.nih.gov best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
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
ncbi.nlm.nih.gov SEO score
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Ncbi.nlm.nih.gov 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 Ncbi.nlm.nih.gov 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.
ncbi.nlm.nih.gov
Open Graph description is not detected on the main page of Ncbi Nlm Nih. 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: