2.7 sec in total
449 ms
2 sec
201 ms
Welcome to chemiday.com homepage info - get ready to check Chemiday best content for Russia right away, or after learning these important things about chemiday.com
ChemiDay.com - это большая химико-биологическая энциклопедия, база уравнений химических реакций, база пищевых добавок и удобный поиск необходимой информации.
Visit chemiday.comWe analyzed Chemiday.com page load time and found that the first response time was 449 ms and then it took 2.2 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.
chemiday.com performance score
name
value
score
weighting
Value2.5 s
68/100
10%
Value2.5 s
90/100
25%
Value6.7 s
36/100
10%
Value1,080 ms
24/100
30%
Value0.121
84/100
15%
Value12.6 s
14/100
10%
449 ms
123 ms
11 ms
282 ms
294 ms
Our browser made a total of 48 requests to load all elements on the main page. We found that 48% of them (23 requests) were addressed to the original Chemiday.com, 10% (5 requests) were made to Googleads.g.doubleclick.net and 8% (4 requests) were made to Tpc.googlesyndication.com. The less responsive or slowest element that took the longest time to load (474 ms) relates to the external source Mc.yandex.ru.
Page size can be reduced by 115.4 kB (55%)
210.0 kB
94.6 kB
In fact, the total size of Chemiday.com main page is 210.0 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 142.0 kB which makes up the majority of the site volume.
Potential reduce by 12.1 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 12.1 kB or 68% of the original size.
Potential reduce by 2.0 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. Chemiday images are well optimized though.
Potential reduce by 81.3 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 81.3 kB or 57% of the original size.
Potential reduce by 20.0 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. Chemiday.com needs all CSS files to be minified and compressed as it can save up to 20.0 kB or 79% of the original size.
Number of requests can be reduced by 19 (44%)
43
24
The browser has sent 43 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Chemiday. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and as a result speed up the page load time.
chemiday.com
449 ms
my.css
123 ms
show_ads.js
11 ms
unitip.js
282 ms
social3.css
294 ms
Chem.png
288 ms
blog.png
289 ms
Compound.png
286 ms
voprs.png
287 ms
Enc.png
287 ms
Mend.png
342 ms
zrt_lookup.html
44 ms
show_ads_impl.js
46 ms
search_opt.png
221 ms
87016221.png
229 ms
90717784.png
248 ms
19626157.png
253 ms
znakvop.png
254 ms
link.png
325 ms
vkwidget.png
339 ms
2048.png
346 ms
Mend-big.png
376 ms
solubility.png
379 ms
molarmass.png
374 ms
ads
260 ms
osd.js
37 ms
analytics.js
48 ms
watch.js
474 ms
vk-w.svg
128 ms
hit;noadsuweb
260 ms
dspixel.js
282 ms
collect
26 ms
ads_300x250_1.html
126 ms
hit;noadsuweb
132 ms
ads
195 ms
advert.gif
91 ms
ads_300x250_2.html
119 ms
1
91 ms
ads
252 ms
m_js_controller.js
22 ms
abg.js
41 ms
googlelogo_color_112x36dp.png
81 ms
nessie_icon_tiamat_white.png
60 ms
s
58 ms
push
72 ms
x_button_blue2.png
11 ms
adex.ashx
176 ms
pixel
15 ms
chemiday.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.
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
<frame> or <iframe> elements do not have a title
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
Tables and lists
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Impact
Issue
List items (<li>) are not contained within <ul> or <ol> parent elements.
chemiday.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
Browser errors were logged to the console
chemiday.com 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
RU
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Chemiday.com can be misinterpreted by Google and other search engines. Our service has detected that Russian 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 Chemiday.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.
chemiday.com
Open Graph description is not detected on the main page of Chemiday. 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: