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Welcome to chemistryweek.org homepage info - get ready to check Chemistry Week best content right away, or after learning these important things about chemistryweek.org
National Chemistry Week is a public awareness campaign that promotes the value of chemistry in everyday life. NCW occurs annually the third week in October.
Visit chemistryweek.orgWe analyzed Chemistryweek.org page load time and found that the first response time was 106 ms and then it took 7.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.
chemistryweek.org performance score
name
value
score
weighting
Value3.4 s
36/100
10%
Value14.2 s
0/100
25%
Value7.4 s
27/100
10%
Value3,180 ms
2/100
30%
Value0.001
100/100
15%
Value19.8 s
2/100
10%
106 ms
726 ms
226 ms
326 ms
283 ms
Our browser made a total of 80 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Chemistryweek.org, 70% (56 requests) were made to Acs.org and 18% (14 requests) were made to Assets.acs.org. The less responsive or slowest element that took the longest time to load (2.9 sec) relates to the external source Acs.org.
Page size can be reduced by 973.2 kB (22%)
4.4 MB
3.4 MB
In fact, the total size of Chemistryweek.org main page is 4.4 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. 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. Images take 4.0 MB which makes up the majority of the site volume.
Potential reduce by 131.8 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. This page needs HTML code to be minified as it can gain 36.6 kB, which is 25% 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 131.8 kB or 89% of the original size.
Potential reduce by 839.4 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, Chemistry Week needs image optimization as it can save up to 839.4 kB or 21% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 696 B
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 1.3 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. Chemistryweek.org has all CSS files already compressed.
Number of requests can be reduced by 22 (29%)
77
55
The browser has sent 77 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Chemistry Week. 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 4 to 1 for CSS and as a result speed up the page load time.
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chemistryweek.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
Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.
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
Links do not have a discernible name
chemistryweek.org 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
Missing source maps for large first-party JavaScript
chemistryweek.org SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Chemistryweek.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 Chemistryweek.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.
chemistryweek.org
Open Graph data is detected on the main page of Chemistry Week. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: