Access tangxin.com. 电话录音_电话录音系统_电话录音盒

name

value

score

weighting

FCP (First Contentful Paint)

Value1.4 s

97/100

10%

LCP (Largest Contentful Paint)

Value1.4 s

100/100

25%

SI (Speed Index)

Value4.4 s

75/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.257

48/100

15%

TTI (Time to Interactive)

Value3.5 s

92/100

10%

tangxin.com

1694 ms

bootstrap.css

1444 ms

style.css

759 ms

bootstrap-responsive.css

779 ms

flaticon.css

530 ms

Our browser made a total of 40 requests to load all elements on the main page. We found that 90% of them (36 requests) were addressed to the original Tangxin.com, 10% (4 requests) were made to Pub.idqqimg.com. The less responsive or slowest element that took the longest time to load (2.4 sec) belongs to the original domain Tangxin.com.

Content Size

864.6 kB

After Optimization

550.3 kB

In fact, the total size of Tangxin.com main page is 864.6 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 513.8 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 25.2 kB

Original 31.2 kB
After minification 27.5 kB
After compression 6.0 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 3.8 kB, which is 12% 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 25.2 kB or 81% of the original size.

Image Optimization

-8%

Potential reduce by 40.5 kB

Original 513.8 kB
After minification 473.3 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. Tangxin images are well optimized though.

JavaScript Optimization

-68%

Potential reduce by 94.9 kB

Original 139.2 kB
After minification 132.1 kB
After compression 44.3 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 94.9 kB or 68% of the original size.

CSS Optimization

-85%

Potential reduce by 153.7 kB

Original 180.5 kB
After minification 146.4 kB
After compression 26.7 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. Tangxin.com needs all CSS files to be minified and compressed as it can save up to 153.7 kB or 85% of the original size.

Requests Now

After Optimization

The browser has sent 38 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Tangxin. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

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.

High

[aria-hidden="true"] elements contain focusable descendents

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

These are opportunities to improve the interpretation of your content by users in different locales.

High

<html> element does not have a [lang] attribute

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.

High

Image elements do not have [alt] attributes

These items highlight common accessibility best practices.

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

Low

Detected JavaScript libraries

Search Engine Optimization Advices

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

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/).

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

Language Detected

ZH
Language Claimed

N/A
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Tangxin.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 Tangxin.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.

Social Sharing Optimization

tangxin.com

Open Graph description is not detected on the main page of Tangxin. 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:

Report Summary

Performance

Accessibility

Best Practices

SEO

电话录音_电话录音系统_电话录音盒_电话录音卡::唐信科技

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

tangxin.com

bootstrap.css

style.css

bootstrap-responsive.css

flaticon.css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

tangxin.com

bootstrap.css

style.css

bootstrap-responsive.css

flaticon.css

banner01.jpg

banner02.jpg

banner03.jpg

product-logo-96-s.jpg

product-logo-112-s.jpg

product-logo-82-s.jpg

product-logo-83-s.jpg

product-logo-84-s.jpg

product-logo-85-s.jpg

product-logo-86-s.jpg

product-logo-89-s.jpg

product-logo-107-s.jpg

product-logo-108-s.jpg

product-logo-101-s.jpg

product-logo-103-s.jpg

product-logo-97-s.jpg

product-logo-98-s.jpg

product-logo-111-s.jpg

jquery-1.8.3.min.js

bootstrap.min.js

responsive-nav.js

main.js

20081203185437php5EE.jpg

20081203204727php68F.jpg

20081204111230phpCDD.jpg

20081204113251phpD03.jpg

f_logo.png

logo.png

icon.png

help_bg.jpg

flaticon.woff

button_old_81.gif

button_11.gif

button_old_81.gif

button_11.gif

Accessibility Review

Accessibility Issues

Best Practices