2.4 sec in total
341 ms
1.6 sec
462 ms
Visit community.h2vn.com now to see the best up-to-date Com Munity H 2 Vn content for Vietnam and also check out these interesting facts you probably never knew about community.h2vn.com
Cộng đồng Hóa học H2VN - Danh mục
Visit community.h2vn.comWe analyzed Community.h2vn.com page load time and found that the first response time was 341 ms and then it took 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.
community.h2vn.com performance score
name
value
score
weighting
Value3.1 s
48/100
10%
Value3.6 s
62/100
25%
Value3.4 s
90/100
10%
Value1,780 ms
10/100
30%
Value0.003
100/100
15%
Value11.1 s
20/100
10%
341 ms
121 ms
117 ms
175 ms
119 ms
Our browser made a total of 58 requests to load all elements on the main page. We found that 40% of them (23 requests) were addressed to the original Community.h2vn.com, 17% (10 requests) were made to Google.com and 14% (8 requests) were made to Tpc.googlesyndication.com. The less responsive or slowest element that took the longest time to load (388 ms) relates to the external source Googleads.g.doubleclick.net.
Page size can be reduced by 203.4 kB (42%)
488.2 kB
284.8 kB
In fact, the total size of Community.h2vn.com main page is 488.2 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. 55% of websites need less resources to load. Javascripts take 221.7 kB which makes up the majority of the site volume.
Potential reduce by 86.4 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 86.4 kB or 84% of the original size.
Potential reduce by 2.8 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. Com Munity H 2 Vn images are well optimized though.
Potential reduce by 51.4 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 51.4 kB or 23% of the original size.
Potential reduce by 62.7 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. Community.h2vn.com needs all CSS files to be minified and compressed as it can save up to 62.7 kB or 84% of the original size.
Number of requests can be reduced by 36 (67%)
54
18
The browser has sent 54 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Com Munity H 2 Vn. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.
community.h2vn.com
341 ms
index.css
121 ms
webkit.css
117 ms
script.js
175 ms
theme.js
119 ms
sha1.js
130 ms
jsapi
18 ms
adsbygoogle.js
5 ms
ga.js
29 ms
13 ms
online
85 ms
center_bg.jpg
196 ms
logo.png
64 ms
upshrink.png
66 ms
submit_bg.png
67 ms
upshrink2.png
67 ms
menu_gfx.png
62 ms
off.png
194 ms
new_none.png
192 ms
new_redirect.png
193 ms
collapse.gif
194 ms
xx.gif
193 ms
calendar.gif
213 ms
info.gif
213 ms
online.gif
212 ms
default+vi.css
40 ms
default.css
46 ms
default+vi.I.js
44 ms
__utm.gif
15 ms
__utm.gif
14 ms
default.css
58 ms
main_block.png
117 ms
windowbg.png
118 ms
expand.gif
117 ms
ca-pub-3489368883698030.js
111 ms
zrt_lookup.html
109 ms
show_ads_impl.js
47 ms
ads
388 ms
osd.js
20 ms
ads
350 ms
scream_V3_display_url_single_css.css
38 ms
scream_V3_display_url_single_css.js
45 ms
layout_engine.js
48 ms
abg.js
45 ms
m_js_controller.js
230 ms
s
24 ms
googlelogo_color_112x36dp.png
67 ms
2230965496654461062
36 ms
x_button_blue2.png
35 ms
favicon
62 ms
nessie_icon_tiamat_white.png
20 ms
async-ads.js
97 ms
google_custom_search_watermark.gif
46 ms
small-logo.png
22 ms
search_box_icon.png
22 ms
clear.png
77 ms
ui
78 ms
fBnyGA8Aionz5086-mElmoOSPUuyQ1M9Un647_EjucU.js
20 ms
community.h2vn.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
Form elements do not have associated labels
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
community.h2vn.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
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
community.h2vn.com SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
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
EN
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Community.h2vn.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 Community.h2vn.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.
community.h2vn.com
Open Graph description is not detected on the main page of Com Munity H 2 Vn. 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: