5.8 sec in total
725 ms
4.2 sec
953 ms
Click here to check amazing Ocean Optics content for China. Otherwise, check out these important facts you probably never knew about oceanoptics.cn
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Visit oceanoptics.cnWe analyzed Oceanoptics.cn page load time and found that the first response time was 725 ms and then it took 5.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.
oceanoptics.cn performance score
name
value
score
weighting
Value3.1 s
46/100
10%
Value4.2 s
45/100
25%
Value11.6 s
4/100
10%
Value490 ms
59/100
30%
Value0.054
98/100
15%
Value22.7 s
1/100
10%
725 ms
61 ms
41 ms
41 ms
162 ms
Our browser made a total of 46 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Oceanoptics.cn, 11% (5 requests) were made to Fonts.gstatic.com and 4% (2 requests) were made to Hm.baidu.com. The less responsive or slowest element that took the longest time to load (1.5 sec) relates to the external source Goutong.baidu.com.
Page size can be reduced by 424.3 kB (12%)
3.4 MB
3.0 MB
In fact, the total size of Oceanoptics.cn main page is 3.4 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 2.7 MB which makes up the majority of the site volume.
Potential reduce by 116.0 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. This page needs HTML code to be minified as it can gain 32.8 kB, which is 22% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 116.0 kB or 77% of the original size.
Potential reduce by 128.6 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. Ocean Optics images are well optimized though.
Potential reduce by 148.3 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 148.3 kB or 29% of the original size.
Potential reduce by 31.3 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. Oceanoptics.cn needs all CSS files to be minified and compressed as it can save up to 31.3 kB or 38% of the original size.
Number of requests can be reduced by 14 (36%)
39
25
The browser has sent 39 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ocean Optics. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and as a result speed up the page load time.
www.oceaninsight.cn
725 ms
styles.css
61 ms
find.js
41 ms
preload.js
41 ms
gallery.js
162 ms
hm.js
1010 ms
ia.js
83 ms
oceanoptics_spectroscopykit_liquidssamplekit_1800x500-1.png
282 ms
oologo_hero_1800x500.jpg
282 ms
sr2-banner.png
307 ms
microsoftteams-image-3.png
243 ms
oceanoptics_logo_hero_3200x1800.jpg
243 ms
bus_hero_3200x1800.jpg
280 ms
ocean-sr.png
454 ms
hr_background.jpg
389 ms
sr-hr-qe-st_banner_3200x880_s.jpg
414 ms
ocean-sr-hero.png
458 ms
st_background.jpg
469 ms
hr_background.jpg
613 ms
electronic-wafer.jpg
552 ms
coral-reef-and-tropical-fish.jpg
610 ms
uv_sterilizedroom_hero.jpg
669 ms
bloodcells_hero_3200x1800.jpg
485 ms
ophthalmology_hero_3200x1800.jpg
656 ms
.png
838 ms
2.png
841 ms
ai.0.js
206 ms
webfont.js
216 ms
ie.js
948 ms
fetch.js
751 ms
IntersectionObserver.js
809 ms
dialog.js
806 ms
focusWithin.js
895 ms
dialog.css
989 ms
ia.js
231 ms
css
26 ms
ia.gif
389 ms
hm.gif
298 ms
b.js
1478 ms
app.js
43 ms
SlGDmQSNjdsmc35JDF1K5E55YMjF_7DPuGi-6_RkBI96WamXgElL.ttf
45 ms
SlGDmQSNjdsmc35JDF1K5E55YMjF_7DPuGi-2fRkBI96WamXgElL.ttf
46 ms
KFOlCnqEu92Fr1MmSU5fBBc9AMP6lQ.ttf
47 ms
KFOmCnqEu92Fr1Mu4mxPKTU1Kg.ttf
48 ms
KFOlCnqEu92Fr1MmEU9fBBc9AMP6lQ.ttf
46 ms
serviceWorker.js
88 ms
oceanoptics.cn accessibility score
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
[aria-*] attributes do not match their roles
Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.
[role]s are not contained by their required parent element
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
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.
oceanoptics.cn 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
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
oceanoptics.cn SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
robots.txt is not valid
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
ZH
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Oceanoptics.cn 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 Oceanoptics.cn 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.
oceanoptics.cn
Open Graph description is not detected on the main page of Ocean Optics. 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: