2.1 sec in total
29 ms
1.9 sec
151 ms
Visit sisweb.com now to see the best up-to-date Sisweb content for United States and also check out these interesting facts you probably never knew about sisweb.com
Scientific laboratory equipment and supplies. Buy mass spec filaments, tungsten wire, electron multipliers for your mass spectrometer. Get capillary columns, thermal desorption here. Manufacturing and...
Visit sisweb.comWe analyzed Sisweb.com page load time and found that the first response time was 29 ms and then it took 2.1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.
sisweb.com performance score
name
value
score
weighting
Value7.5 s
1/100
10%
Value12.1 s
0/100
25%
Value11.3 s
5/100
10%
Value2,190 ms
6/100
30%
Value0.411
24/100
15%
Value11.0 s
21/100
10%
29 ms
81 ms
12 ms
15 ms
706 ms
Our browser made a total of 43 requests to load all elements on the main page. We found that 95% of them (41 requests) were addressed to the original Sisweb.com, 5% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.7 sec) belongs to the original domain Sisweb.com.
Page size can be reduced by 246.1 kB (63%)
388.5 kB
142.4 kB
In fact, the total size of Sisweb.com main page is 388.5 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. 30% of websites need less resources to load. Javascripts take 178.5 kB which makes up the majority of the site volume.
Potential reduce by 80.6 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 80.6 kB or 76% of the original size.
Potential reduce by 25.5 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, Sisweb needs image optimization as it can save up to 25.5 kB or 37% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 113.2 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 113.2 kB or 63% of the original size.
Potential reduce by 26.7 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. Sisweb.com needs all CSS files to be minified and compressed as it can save up to 26.7 kB or 78% of the original size.
Number of requests can be reduced by 6 (15%)
41
35
The browser has sent 41 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sisweb. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and as a result speed up the page load time.
sisweb.com
29 ms
www.sisweb.com
81 ms
page.css
12 ms
page-optional.css
15 ms
jquery.tooltip.css
706 ms
jquery-1.10.2.min.js
24 ms
jquery.tooltip.js
726 ms
watermark.js
1708 ms
jquery.autocomplete.js
21 ms
page.js
14 ms
rating.js
22 ms
analytics.js
48 ms
newcover.jpg
28 ms
massspeclogo1.png
90 ms
cart.gif
28 ms
logo-sis-8.png
91 ms
filament80g.jpg
32 ms
gccol80.jpg
30 ms
sece.jpg
28 ms
tdtube80g.jpg
28 ms
sis-logonew.png
29 ms
next-advance-logo.gif
30 ms
bottle80g.jpg
89 ms
nist80.jpg
31 ms
filament5973.jpg
87 ms
fadal_closeup.jpg
90 ms
sis-logo-big-light.png
100 ms
phthal.png
92 ms
newcover100.jpg
91 ms
nist-ei.png
93 ms
5900.jpg
92 ms
gccol.jpg
94 ms
connectite-liner.jpg
94 ms
bulletblender.jpg
95 ms
asi-adjustablefs.jpg
96 ms
vacpump.jpg
95 ms
thermoheatedcap.jpg
96 ms
5971fil.jpg
97 ms
model200.jpg
96 ms
in-2c-28px-r.png
97 ms
question2.png
98 ms
phone.png
98 ms
collect
18 ms
sisweb.com 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 match their roles
[aria-hidden="true"] elements contain focusable descendents
ARIA input fields do not have accessible names
Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.
[aria-*] attributes do not have valid values
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
Image elements do not have [alt] attributes
Form elements do not have associated labels
Links do not have a discernible name
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.
sisweb.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
Displays images with incorrect aspect ratio
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
sisweb.com SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
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
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sisweb.com 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 Sisweb.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.
sisweb.com
Open Graph description is not detected on the main page of Sisweb. 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: