22.9 sec in total
5.1 sec
17.6 sec
211 ms
Click here to check amazing Chem Semnan content for Iran. Otherwise, check out these important facts you probably never knew about chem.semnan.ac.ir
دانشکده شیمی دانشگاه سمنان
Visit chem.semnan.ac.irWe analyzed Chem.semnan.ac.ir page load time and found that the first response time was 5.1 sec and then it took 17.8 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster. This domain responded with an error, which can significantly jeopardize Chem.semnan.ac.ir rating and web reputation
chem.semnan.ac.ir performance score
name
value
score
weighting
Value3.3 s
39/100
10%
Value6.2 s
11/100
25%
Value7.8 s
24/100
10%
Value140 ms
95/100
30%
Value0.019
100/100
15%
Value5.3 s
73/100
10%
5108 ms
1864 ms
1428 ms
232 ms
417 ms
Our browser made a total of 30 requests to load all elements on the main page. We found that all of those requests were addressed to Chem.semnan.ac.ir and no external sources were called. The less responsive or slowest element that took the longest time to load (12.7 sec) belongs to the original domain Chem.semnan.ac.ir.
Page size can be reduced by 156.0 kB (42%)
369.1 kB
213.1 kB
In fact, the total size of Chem.semnan.ac.ir main page is 369.1 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. Only 5% of websites need less resources to load. Images take 172.2 kB which makes up the majority of the site volume.
Potential reduce by 55.6 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 55.6 kB or 85% of the original size.
Potential reduce by 8.6 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. Chem Semnan images are well optimized though.
Potential reduce by 91.5 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 91.5 kB or 70% of the original size.
Potential reduce by 264 B
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. Chem.semnan.ac.ir needs all CSS files to be minified and compressed as it can save up to 264 B or 54% of the original size.
Number of requests can be reduced by 13 (50%)
26
13
The browser has sent 26 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Chem Semnan. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.
chem.semnan.ac.ir
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chem.semnan.ac.ir accessibility score
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
Buttons do not have an accessible name
Links do not have a discernible name
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
chem.semnan.ac.ir 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
chem.semnan.ac.ir SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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
FA
FA
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Chem.semnan.ac.ir can be misinterpreted by Google and other search engines. Our service has detected that Persian is used on the page, and it matches the claimed language. Our system also found out that Chem.semnan.ac.ir 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.
chem.semnan.ac.ir
Open Graph description is not detected on the main page of Chem Semnan. 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: