11.4 sec in total
136 ms
2.3 sec
9 sec
Welcome to oh.chemheritage.org homepage info - get ready to check Oh Chemheritage best content for United States right away, or after learning these important things about oh.chemheritage.org
Visit oh.chemheritage.orgWe analyzed Oh.chemheritage.org page load time and found that the first response time was 136 ms and then it took 11.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.
oh.chemheritage.org performance score
name
value
score
weighting
Value5.8 s
4/100
10%
Value12.1 s
0/100
25%
Value9.5 s
11/100
10%
Value3,090 ms
2/100
30%
Value0.032
100/100
15%
Value11.9 s
16/100
10%
136 ms
830 ms
12 ms
36 ms
55 ms
Our browser made a total of 41 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Oh.chemheritage.org, 46% (19 requests) were made to Oh.sciencehistory.org and 27% (11 requests) were made to Use.typekit.net. The less responsive or slowest element that took the longest time to load (830 ms) relates to the external source Oh.sciencehistory.org.
Page size can be reduced by 352.1 kB (57%)
620.1 kB
268.1 kB
In fact, the total size of Oh.chemheritage.org main page is 620.1 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. 60% of websites need less resources to load. Javascripts take 241.0 kB which makes up the majority of the site volume.
Potential reduce by 59.1 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 59.1 kB or 69% of the original size.
Potential reduce by 1.4 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. Oh Chemheritage images are well optimized though.
Potential reduce by 96.7 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 96.7 kB or 40% of the original size.
Potential reduce by 194.8 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. Oh.chemheritage.org needs all CSS files to be minified and compressed as it can save up to 194.8 kB or 84% of the original size.
Number of requests can be reduced by 19 (68%)
28
9
The browser has sent 28 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Oh Chemheritage. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.
oh.chemheritage.org
136 ms
oh.sciencehistory.org
830 ms
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modernizr.min.js
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jquery.min.js
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oh.chemheritage.org accessibility score
oh.chemheritage.org best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
oh.chemheritage.org SEO score
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 Oh.chemheritage.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 Oh.chemheritage.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.
oh.chemheritage.org
Open Graph description is not detected on the main page of Oh Chemheritage. 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: