3.9 sec in total
635 ms
3.1 sec
255 ms
Visit bbs.opcoating.com now to see the best up-to-date Bbs Opcoating content and also check out these interesting facts you probably never knew about bbs.opcoating.com
光学薄膜论坛-专业光学薄膜交流技术平台
Visit bbs.opcoating.comWe analyzed Bbs.opcoating.com page load time and found that the first response time was 635 ms and then it took 3.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.
bbs.opcoating.com performance score
name
value
score
weighting
Value1.3 s
98/100
10%
Value1.8 s
98/100
25%
Value1.3 s
100/100
10%
Value0 ms
100/100
30%
Value0
100/100
15%
Value1.3 s
100/100
10%
635 ms
179 ms
217 ms
185 ms
184 ms
Our browser made a total of 48 requests to load all elements on the main page. We found that 63% of them (30 requests) were addressed to the original Bbs.opcoating.com, 29% (14 requests) were made to Opcoating.com and 4% (2 requests) were made to Hm.baidu.com. The less responsive or slowest element that took the longest time to load (1.1 sec) relates to the external source Eiv.baidu.com.
Page size can be reduced by 221.0 kB (59%)
372.6 kB
151.6 kB
In fact, the total size of Bbs.opcoating.com main page is 372.6 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. 25% of websites need less resources to load. Images take 131.0 kB which makes up the majority of the site volume.
Potential reduce by 65.6 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 65.6 kB or 79% of the original size.
Potential reduce by 38.6 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. Obviously, Bbs Opcoating needs image optimization as it can save up to 38.6 kB or 29% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 58.5 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 58.5 kB or 69% of the original size.
Potential reduce by 58.4 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. Bbs.opcoating.com needs all CSS files to be minified and compressed as it can save up to 58.4 kB or 78% of the original size.
Number of requests can be reduced by 20 (43%)
47
27
The browser has sent 47 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Bbs Opcoating. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and as a result speed up the page load time.
bbs.opcoating.com
635 ms
style_1_common.css
179 ms
style_1_forum_index.css
217 ms
common.js
185 ms
forum.js
184 ms
logging.js
165 ms
title.js
202 ms
discuz_tips.js
602 ms
0.gif
331 ms
1.gif
454 ms
2.gif
543 ms
3.gif
425 ms
4.gif
541 ms
5.gif
485 ms
6.gif
472 ms
7.gif
613 ms
dianhua.gif
670 ms
qq.gif
636 ms
email.gif
718 ms
shijian.gif
717 ms
index_bg.png
888 ms
logo.gif
803 ms
background.png
158 ms
switch_width.png
166 ms
Logo1.png
204 ms
px.png
15 ms
newarow.gif
156 ms
pn.png
190 ms
qq_login.gif
189 ms
nv.png
318 ms
qmenu.png
290 ms
nv_a.png
302 ms
search.png
265 ms
pt_item.png
358 ms
list.gif
417 ms
collapsed_no.gif
497 ms
forum.gif
496 ms
collapsed_yes.gif
465 ms
ad_close.gif
498 ms
security.png
361 ms
chart.png
571 ms
listbg.gif
567 ms
titlebg.png
942 ms
connect.php
879 ms
h.js
1001 ms
21.gif
1078 ms
hm.gif
328 ms
scrolltop.png
5 ms
bbs.opcoating.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.
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
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
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
bbs.opcoating.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
bbs.opcoating.com SEO score
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
ZH
N/A
GBK
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Bbs.opcoating.com can be misinterpreted by Google and other search engines. Our service has detected that Chinese 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 Bbs.opcoating.com main page’s claimed encoding is gbk. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.
bbs.opcoating.com
Open Graph description is not detected on the main page of Bbs Opcoating. 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: