1.5 sec in total
121 ms
1.1 sec
316 ms
Welcome to semrock.com homepage info - get ready to check Semrock best content for United States right away, or after learning these important things about semrock.com
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Visit semrock.comWe analyzed Semrock.com page load time and found that the first response time was 121 ms and then it took 1.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.
semrock.com performance score
name
value
score
weighting
Value7.3 s
1/100
10%
Value13.9 s
0/100
25%
Value12.7 s
3/100
10%
Value4,030 ms
1/100
30%
Value0.019
100/100
15%
Value14.0 s
10/100
10%
121 ms
58 ms
128 ms
41 ms
48 ms
Our browser made a total of 64 requests to load all elements on the main page. We found that 80% of them (51 requests) were addressed to the original Semrock.com, 8% (5 requests) were made to Fonts.gstatic.com and 3% (2 requests) were made to Googleadservices.com. The less responsive or slowest element that took the longest time to load (481 ms) relates to the external source Fonts.gstatic.com.
Page size can be reduced by 640.4 kB (40%)
1.6 MB
962.8 kB
In fact, the total size of Semrock.com main page is 1.6 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. 55% of websites need less resources to load. Images take 708.2 kB which makes up the majority of the site volume.
Potential reduce by 22.8 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 22.8 kB or 64% of the original size.
Potential reduce by 20.6 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. Semrock images are well optimized though.
Potential reduce by 473.5 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 473.5 kB or 67% of the original size.
Potential reduce by 123.5 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. Semrock.com needs all CSS files to be minified and compressed as it can save up to 123.5 kB or 81% of the original size.
Number of requests can be reduced by 28 (52%)
54
26
The browser has sent 54 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Semrock. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 18 to 1 for CSS and as a result speed up the page load time.
semrock.com
121 ms
semrock.com
58 ms
www.semrock.com
128 ms
jquery-ui.css
41 ms
style.css
48 ms
cb_mojo_dark1.css
48 ms
jquery.cluetip.css
46 ms
style.css
45 ms
style.css
48 ms
Calendar.css
51 ms
WhiteChromeGridView.css
59 ms
default.css
63 ms
style.css
54 ms
style.css
55 ms
default.css
55 ms
stylemojo.css
66 ms
style-artisteer-overrides.css
69 ms
Semrock.css
80 ms
jplayer.blue.monday.css
76 ms
css
104 ms
jquery.min.js
79 ms
jquery-ui.min.js
91 ms
notify.min.js
91 ms
conversion.js
75 ms
WebResource.axd
87 ms
script.js
89 ms
WebResource.axd
94 ms
WebResource.axd
91 ms
WebResource.axd
91 ms
ScriptResource.axd
93 ms
fadeSlideShow.js
87 ms
analytics.js
157 ms
sem-gutter-banner.jpg
90 ms
71 ms
button-search.png
36 ms
Slider2-1200.jpg
79 ms
Slider-customsize.jpg
142 ms
Slider-BDpromo2.jpg
142 ms
slider-versachrome.jpg
79 ms
smk-slider-1200-brightline.jpg
79 ms
SMK-Banner-1200x430.png
423 ms
Individual-Filters.jpg
138 ms
FilterSets.jpg
142 ms
HC1.jpg
138 ms
idex-footer-logo.png
145 ms
isfl-footer-tagline.png
416 ms
White_SemrockLogo.png
418 ms
logo-linkedin.png
419 ms
ISO_Logo.png
419 ms
v0SdcGFAl2aezM9Vq_aFTQ.ttf
426 ms
nj47mAZe0mYUIySgfn0wpQ.ttf
427 ms
zJY4gsxBiSo5L7tNutxFNg.ttf
469 ms
DvlFBScY1r-FMtZSYIYoYw.ttf
481 ms
4cKlrioa77J2iqTqBgkRWg.ttf
475 ms
418 ms
Semrock-Top-Logo.jpg
391 ms
sem-mid-banner.jpg
352 ms
Plot_Now.png
351 ms
OrderNow.png
351 ms
SEM-Footer-Master.jpg
352 ms
collect
293 ms
ga.js
337 ms
a15.png
50 ms
74 ms
semrock.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
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
Form elements do not have associated labels
Links do not have a discernible name
semrock.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
Browser errors were logged to the console
Issues were logged in the Issues panel in Chrome Devtools
semrock.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
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Semrock.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 Semrock.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.
semrock.com
Open Graph description is not detected on the main page of Semrock. 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: