5.1 sec in total
214 ms
4.6 sec
320 ms
Click here to check amazing Dna content. Otherwise, check out these important facts you probably never knew about dna.us
MIT 7.01SC Fundamentals of Biology
Visit dna.usWe analyzed Dna.us page load time and found that the first response time was 214 ms and then it took 4.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.
dna.us performance score
name
value
score
weighting
Value3.2 s
44/100
10%
Value3.2 s
73/100
25%
Value40.3 s
0/100
10%
Value71,070 ms
0/100
30%
Value0
100/100
15%
Value95.8 s
0/100
10%
214 ms
37 ms
93 ms
163 ms
128 ms
Our browser made a total of 72 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Dna.us, 53% (38 requests) were made to Youtube.com and 35% (25 requests) were made to Jnn-pa.googleapis.com. The less responsive or slowest element that took the longest time to load (2 sec) relates to the external source Static.doubleclick.net.
Page size can be reduced by 334.8 kB (44%)
756.3 kB
421.6 kB
In fact, the total size of Dna.us main page is 756.3 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. 85% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. CSS take 426.5 kB which makes up the majority of the site volume.
Potential reduce by 21.1 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 2.7 kB, which is 11% 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 21.1 kB or 87% of the original size.
Potential reduce by 4.7 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. This website has mostly compressed JavaScripts.
Potential reduce by 308.9 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. Dna.us needs all CSS files to be minified and compressed as it can save up to 308.9 kB or 72% of the original size.
Number of requests can be reduced by 8 (12%)
69
61
The browser has sent 69 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dna. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and as a result speed up the page load time.
dna.us
214 ms
counter.js
37 ms
TnpCMgtDPgk
93 ms
BIIWlZqWxKg
163 ms
YnF1b_Kqf88
128 ms
QTb6YsxMbBY
385 ms
CdAgzk5tQhs
112 ms
uBRdfsz_YB4
174 ms
t.php
99 ms
www-player.css
11 ms
www-embed-player.js
38 ms
base.js
105 ms
tMr9XH64rtM
752 ms
zQfcPQpKZUk
862 ms
www-player.css
66 ms
P-Ry4rRdDbk
779 ms
uDXH6Uu0ghc
1024 ms
zLGHH9Rwvlw
968 ms
www-embed-player.js
262 ms
base.js
370 ms
DRBREvFL19g
1045 ms
CT9lYy6qSfg
1157 ms
o_1dTvszV4Y
1097 ms
9dHBTckFvME
1209 ms
PzY0MWEEE6U
1242 ms
reYwbnuhFU0
1295 ms
YCeKtM6Hnmc
1426 ms
nCBTC3-xsLM
1749 ms
K5n0BMKZR_Q
1750 ms
sAD1Xr3-rmI
1293 ms
qY0ixUWJx0g
1349 ms
uERjKWXO4NQ
1743 ms
2TL8rY9Rc_A
1705 ms
MqNq9S1_Ct8
1705 ms
LvLbaVW84nE
1704 ms
ad_status.js
1969 ms
OK7_ReXhVaQ
1939 ms
Rn9zldxtZko
1938 ms
x_vlxGFrZLY
1937 ms
SvjeCxVu2dI
1937 ms
wAFWjcG1j0S59k6y9gmRkscrkcYt8sjUn-04af-yL2Q.js
804 ms
embed.js
599 ms
id
163 ms
embed.js
63 ms
Create
609 ms
Create
608 ms
Create
607 ms
Create
609 ms
Create
582 ms
Create
433 ms
Create
348 ms
Create
292 ms
Create
233 ms
Create
175 ms
Create
187 ms
Create
192 ms
Create
191 ms
Create
183 ms
Create
181 ms
Create
181 ms
Create
180 ms
Create
179 ms
Create
184 ms
Create
186 ms
Create
184 ms
Create
180 ms
Create
177 ms
Create
176 ms
Create
170 ms
KFOmCnqEu92Fr1Mu4mxM.woff
117 ms
KFOlCnqEu92Fr1MmEU9fBBc-.woff
118 ms
id
64 ms
dna.us 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
<frame> or <iframe> elements do not have a title
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
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>).
dna.us best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
dna.us SEO score
EN
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Dna.us can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Dna.us 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.
dna.us
Open Graph description is not detected on the main page of Dna. 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: