3.6 sec in total
221 ms
3.1 sec
333 ms
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Visit scm.comWe analyzed Scm.com page load time and found that the first response time was 221 ms and then it took 3.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.
scm.com performance score
name
value
score
weighting
Value4.3 s
18/100
10%
Value6.7 s
7/100
25%
Value5.2 s
60/100
10%
Value80 ms
99/100
30%
Value0.041
99/100
15%
Value6.7 s
57/100
10%
221 ms
421 ms
227 ms
741 ms
189 ms
Our browser made a total of 42 requests to load all elements on the main page. We found that 86% of them (36 requests) were addressed to the original Scm.com, 7% (3 requests) were made to Fonts.gstatic.com and 5% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (927 ms) belongs to the original domain Scm.com.
Page size can be reduced by 365.0 kB (30%)
1.2 MB
840.6 kB
In fact, the total size of Scm.com 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. 35% of websites need less resources to load. Images take 810.1 kB which makes up the majority of the site volume.
Potential reduce by 29.2 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 29.2 kB or 81% of the original size.
Potential reduce by 79.8 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. Scm images are well optimized though.
Potential reduce by 112.8 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 112.8 kB or 60% of the original size.
Potential reduce by 143.1 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. Scm.com needs all CSS files to be minified and compressed as it can save up to 143.1 kB or 84% of the original size.
We found no issues to fix!
33
33
The browser has sent 33 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Scm. According to our analytics all requests are already optimized.
scm.com
221 ms
scm.com
421 ms
www.scm.com
227 ms
www.scm.com
741 ms
M9AvTs7VTy4u1k8sKAAA.css
189 ms
RclhCoAgDEDhC7lWeKKloxR15kzo9hUE_Xsfz2I8Tm6XsV9ADlujzlMOxSwozu1BgPxD6CJJMSo21ipFw2DotCZWM6O6_K7BxUv7TbXe.js
376 ms
css
61 ms
M9EvL9BNzU1KTdHLzcwDAA.js
303 ms
analytics.js
50 ms
scm-logo-compact.svg
116 ms
scm-logo.svg
138 ms
icon-search.svg
114 ms
graphene-1200x330.jpg
391 ms
Roald_Hoffmann1-e1448444915732-80x80.jpg
202 ms
chevron-right-sprite.png
212 ms
NMRShielding_LUMO1-612x392.png
745 ms
VibronicFineStructurePtEmitter-612x398.png
297 ms
holetransfer_organic-612x400.png
694 ms
New32eClusters_HOMO_pDOS-1-e1450733885696-612x400.jpg
393 ms
Hydrogen_Bonding_AT_base_pair-612x400.jpg
580 ms
TiO2_nanocrystal_growth-612x400.png
581 ms
Cl-Al-donation_MAO_MgCl2-235x140.
682 ms
PAH_gasification-235x140.png
680 ms
2D-PbS2_diode-235x140.
825 ms
twitter.png
729 ms
linkedin.png
775 ms
youtube.png
779 ms
v0SdcGFAl2aezM9Vq_aFTQ.ttf
54 ms
DvlFBScY1r-FMtZSYIYoYw.ttf
79 ms
4cKlrioa77J2iqTqBgkRWg.ttf
81 ms
icon-academic.svg
754 ms
icon-gui.svg
788 ms
icon-team.svg
799 ms
icon-binaries.svg
831 ms
icon-adf.svg
837 ms
icon-band.svg
854 ms
icon-dftb.svg
881 ms
icon-mopac.svg
885 ms
icon-reaxff.svg
895 ms
icon-cosmo-rs.svg
927 ms
collect
30 ms
print.css
97 ms
scm.com 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.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
scm.com 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
scm.com 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
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 Scm.com 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 Scm.com 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.
scm.com
Open Graph description is not detected on the main page of Scm. 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: