1.5 sec in total
725 ms
731 ms
1 ms
Click here to check amazing Nat 123 content for China. Otherwise, check out these important facts you probably never knew about nat123.com
nat123是内网穿透工具,也是免费的端口映射和DDNS动态域名解析软件。全端口P2P穿透不限速,80穿透本地公网IP加速不限速,自带防火墙,解决80被封/动态IP/无公网ip问题。可上网即映射外网,一个映射所有端口协议,发布网站、访问局域网服务器和应用,同时提供免费域名,URL转发,远程开机,软件下载,内网穿透教程等服务。
Visit nat123.comWe analyzed Nat123.com page load time and found that the first response time was 725 ms and then it took 732 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster.
nat123.com performance score
name
value
score
weighting
Value4.1 s
21/100
10%
Value5.0 s
27/100
25%
Value12.6 s
3/100
10%
Value300 ms
78/100
30%
Value0.258
48/100
15%
Value6.9 s
54/100
10%
725 ms
Our browser made a total of 1 request to load all elements on the main page. We found that all of those requests were addressed to Nat123.com and no external sources were called. The less responsive or slowest element that took the longest time to load (725 ms) belongs to the original domain Nat123.com.
Page size can be reduced by 93 B (29%)
321 B
228 B
In fact, the total size of Nat123.com main page is 321 B. This result falls within the top 5000 of lightweight and thus fast loading web pages. Only a small number of websites need less resources to load. HTML takes 321 B which makes up the majority of the site volume.
Potential reduce by 93 B
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 93 B or 29% of the original size.
We found no issues to fix!
0
0
Besides the initial HTML request, no CSS, Javascripts, AJAX or image files were requested in the course of web page rendering.
nat123.com
725 ms
nat123.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
Image elements do not have [alt] attributes
Form elements do not have associated labels
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
nat123.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
nat123.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
ZH
N/A
GBK
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nat123.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 Nat123.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.
nat123.com
Open Graph description is not detected on the main page of Nat 123. 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: