14.3 sec in total
4.1 sec
9.8 sec
372 ms
Welcome to 30t.com homepage info - get ready to check 30 T best content right away, or after learning these important things about 30t.com
三雷科技是黑龙江接入商,提供网站域名备案、虚拟主机、云主机等业务,网站业务包含网站制作、网站关键词排名优化、网站程序升级和维护等服务,提供代办icp和edi增值电信业务经营许可证服务。
Visit 30t.comWe analyzed 30t.com page load time and found that the first response time was 4.1 sec and then it took 10.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.
30t.com performance score
name
value
score
weighting
Value6.3 s
3/100
10%
Value9.7 s
0/100
25%
Value9.3 s
13/100
10%
Value50 ms
100/100
30%
Value0
100/100
15%
Value9.8 s
28/100
10%
4134 ms
3443 ms
3444 ms
3447 ms
3925 ms
Our browser made a total of 60 requests to load all elements on the main page. We found that all of those requests were addressed to 30t.com and no external sources were called. The less responsive or slowest element that took the longest time to load (5 sec) belongs to the original domain 30t.com.
Page size can be reduced by 168.1 kB (28%)
604.0 kB
435.8 kB
In fact, the total size of 30t.com main page is 604.0 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. 25% of websites need less resources to load. Images take 449.8 kB which makes up the majority of the site volume.
Potential reduce by 129.2 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 129.2 kB or 84% of the original size.
Potential reduce by 38.1 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. 30 T images are well optimized though.
Potential reduce by 763 B
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 763 B or 64% of the original size.
We found no issues to fix!
59
59
The browser has sent 59 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 30 T. According to our analytics all requests are already optimized.
30t.com
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indexdenlu.jpg
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30t.js
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1662 ms
30t.com 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
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
Image elements do not have [alt] attributes
Links do not have a discernible name
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
[id] attributes on active, focusable elements are not unique
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.
30t.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
30t.com SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
robots.txt is not valid
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
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 30t.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 30t.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.
30t.com
Open Graph description is not detected on the main page of 30 T. 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: