3.7 sec in total
958 ms
2.3 sec
435 ms
Visit stm.sciencemag.org now to see the best up-to-date Stm Science Mag content for China and also check out these interesting facts you probably never knew about stm.sciencemag.org
Visit stm.sciencemag.orgWe analyzed Stm.sciencemag.org page load time and found that the first response time was 958 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.
stm.sciencemag.org performance score
name
value
score
weighting
Value3.9 s
25/100
10%
Value13.5 s
0/100
25%
Value11.8 s
4/100
10%
Value3,340 ms
2/100
30%
Value0.086
93/100
15%
Value19.8 s
2/100
10%
958 ms
14 ms
158 ms
10 ms
13 ms
Our browser made a total of 71 requests to load all elements on the main page. We found that 8% of them (6 requests) were addressed to the original Stm.sciencemag.org, 35% (25 requests) were made to D3ukwgt0ah4zb1.cloudfront.net and 17% (12 requests) were made to Assets.adobedtm.com. The less responsive or slowest element that took the longest time to load (958 ms) belongs to the original domain Stm.sciencemag.org.
Page size can be reduced by 817.0 kB (65%)
1.3 MB
449.0 kB
In fact, the total size of Stm.sciencemag.org 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. 60% of websites need less resources to load. Javascripts take 671.6 kB which makes up the majority of the site volume.
Potential reduce by 92.5 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 92.5 kB or 82% of the original size.
Potential reduce by 1.9 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. Stm Science Mag images are well optimized though.
Potential reduce by 473.2 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 473.2 kB or 70% of the original size.
Potential reduce by 249.4 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. Stm.sciencemag.org needs all CSS files to be minified and compressed as it can save up to 249.4 kB or 82% of the original size.
Number of requests can be reduced by 42 (74%)
57
15
The browser has sent 57 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Stm Science Mag. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 29 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.
stm.sciencemag.org
958 ms
css_L3FVYo74-qaZKLMEKW_k9h3AGLY5CZfZbpFVUiBD5yE.css
14 ms
css_7Dn1WFPVC3lQVdjyrM_s0oZhFIlPkkotpcNUoOg4njY.css
158 ms
css_CqRXmcBAAE_jBq_520UERjn4Zf8_DbwPtCLgsEu1xzo.css
10 ms
css_7yZIWn2kVrX-iU87vbx59zBpfQYlc7DocA9WQv41-KY_highwire.style.highwire.css.css
13 ms
css_M5UNRHEZ-8wZXxkqnIvDcdzQIJUobb0FNqsposaxb20.css
218 ms
css_HzrFFJifLNt0GDr4PJdIRs1t59zEGQLoH_Xof5zSer4.css
256 ms
css_Mzc0m7P5WWkQ0Wr9mS4zHBUbjjRuTwv13jsnrV5SyhI.css
14 ms
modernizr.js
207 ms
satelliteLib-a9d46808a35b7b8034adfab1d8207407222304d5.js
10 ms
modernizr.min.js
4 ms
js_gXGQPVsYr4CtgXkRg81CynHH6ATIwzlo_khhCBgrhqQ.js
8 ms
js_suYoIs9QbV0E-AvVU_pH-6QjXjK_OmkLWqn0I-aJj7c.js
5 ms
js_agtIj0vwY1jWqD6x6QpiyCS3s7JV2s4nue-pBDiTF8A.js
7 ms
js_npR5-XrfYuUILfknt4ldGkQAqyZi9dJQXopDxZazNMU.js
9 ms
js_ejY_gr9CBCtuLJgCTdgetOz4folLcfg71DYj6ewkN9s.js
12 ms
js_RdhAVSSNIW8r2j6LR2p8OEMY4OwwgmitFeGHGHBK7zo.js
11 ms
js_UN3CIvg3Thfvjfqpr46ZyvH2ThE8u1aoaIc3lkOfXBc.js
13 ms
id
8 ms
satellite-541328889484fa1dac000117.js
5 ms
satellite-56bbbe5064746d730a0012a6.js
5 ms
id
105 ms
logo-stm.svg
440 ms
style-jcore.css
365 ms
dc68314e10a8040acde692e6fadba264.gif
386 ms
logo-aaas.svg
141 ms
F1.medium.gif
40 ms
logo-science-aaas.svg
383 ms
60a0fc32-0816-4858-9fb8-6ae4f6c1aa0a.css
137 ms
satellite-5661e0c664746d7772001c6a.js
20 ms
satellite-563285fd64746d41dd000162.js
17 ms
satellite-542d911c45c922556400047f.js
183 ms
analytics.js
250 ms
s-code-contents-325d54ac1d8b061a29ba0242b53a2f6fac7e9e18.js
241 ms
rt_stm_mar9_R1.jpg
748 ms
rt_stm_mar9_R2.jpg
746 ms
rt_stm_mar9_R3.jpg
704 ms
rt_stm_mar9_R5.jpg
787 ms
Immunology-Launch-STM-Rotator-1270x415_1.jpg
889 ms
1.js
237 ms
satellite-5452793117a14e08000008b2.js
198 ms
satellite-54c14b5a3966380015640700.js
198 ms
satellite-56609cd764746d5ccc0014ed.js
197 ms
ac
419 ms
v.gif
125 ms
id
34 ms
collect
14 ms
iframe_api
37 ms
satellite-5660a0b864746d5609003761.js
10 ms
970213f5-af86-47f1-ac0c-f1a9e244ea3a
115 ms
b82313b8-0be3-4a4c-a6cc-00f9f95cb2a9
271 ms
670790fb-7b98-462b-aabf-d7e3ee55c4f9
206 ms
a5e81c4c-cfc6-4083-8028-54c6f1c82620
164 ms
s39051819017622
7 ms
collect
91 ms
@Top,Right2,x30,x51,x60
25 ms
form-subscribe-capture.html
253 ms
form-stm.html
256 ms
satellite-56d4d53d64746d545d0016a5.js
2 ms
1457637303
58 ms
45 ms
www-widgetapi.js
50 ms
1454708206
45 ms
1456955804
44 ms
46 ms
48 ms
715710fa-3e24-47ef-8e79-04ac2e6be5fc
185 ms
eb4f41be-1bf9-4f7f-8dd4-aeda86124da1
185 ms
ga-audiences
108 ms
fonts.css
143 ms
fontawesome-webfont.woff
139 ms
stm.sciencemag.org accessibility score
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
[aria-*] attributes do not have valid values
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
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
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.
stm.sciencemag.org best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
General
Impact
Issue
Detected JavaScript libraries
Missing source maps for large first-party JavaScript
stm.sciencemag.org 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
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Stm.sciencemag.org 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 Stm.sciencemag.org 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.
stm.sciencemag.org
Open Graph description is not detected on the main page of Stm Science Mag. 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: