Tools & Wizards About Us

Report Summary

  • 38

    Performance

    Renders faster than
    57% of other websites

  • 82

    Accessibility

    Visual factors better than
    that of 52% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

callingsys.com

Wireless Calling System / Wireless Call system / Wireless Pager system / Waiter Call System / Hospital call system

Page Load Speed

6.7 sec in total

First Response

673 ms

Resources Loaded

5.6 sec

Page Rendered

453 ms

About Website

Welcome to callingsys.com homepage info - get ready to check Calling Sys best content right away, or after learning these important things about callingsys.com

wireless calling products and services provider - We are dedicated to the research and manufacture of digital wireless calling system products for many years in shenzhen China. We have got many patent...

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Key Findings

We analyzed Callingsys.com page load time and found that the first response time was 673 ms and then it took 6.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

callingsys.com performance score

38

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.9 s

4/100

10%

LCP (Largest Contentful Paint)

Value8.7 s

1/100

25%

SI (Speed Index)

Value14.7 s

1/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.686

7/100

15%

TTI (Time to Interactive)

Value6.6 s

57/100

10%

Network Requests Diagram

www.callingsys.com

673 ms

style.css

223 ms

swiper.css

429 ms

jquery-3.7.1.min.js

663 ms

swiper.js

872 ms

Our browser made a total of 29 requests to load all elements on the main page. We found that all of those requests were addressed to Callingsys.com and no external sources were called. The less responsive or slowest element that took the longest time to load (3.8 sec) belongs to the original domain Callingsys.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 39.8 kB (3%)

Content Size

1.3 MB

After Optimization

1.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Callingsys.com main page is 1.3 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. 40% of websites need less resources to load. Images take 1.2 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 17.4 kB

  • Original 20.8 kB
  • After minification 16.7 kB
  • After compression 3.4 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 4.1 kB, which is 20% 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 17.4 kB or 84% of the original size.

Image Optimization

-0%

Potential reduce by 4.8 kB

  • Original 1.2 MB
  • After minification 1.1 MB

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. Calling Sys images are well optimized though.

JavaScript Optimization

-16%

Potential reduce by 15.5 kB

  • Original 95.8 kB
  • After minification 95.8 kB
  • After compression 80.3 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 15.5 kB or 16% of the original size.

CSS Optimization

-30%

Potential reduce by 2.0 kB

  • Original 6.7 kB
  • After minification 6.7 kB
  • After compression 4.7 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. Callingsys.com needs all CSS files to be minified and compressed as it can save up to 2.0 kB or 30% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

28

After Optimization

28

  • Images
  • JavaScript
  • CSS

The browser has sent 28 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Calling Sys. According to our analytics all requests are already optimized.

Network Requests Diagram

Accessibility Review

callingsys.com accessibility score

82

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

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

High

<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

High

Links do not have a discernible name

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

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

Best Practices

callingsys.com best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

callingsys.com SEO score

92

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

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

High

Document uses legible font sizes

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Callingsys.com can be misinterpreted by Google and other search engines. Our service has detected that English 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 Callingsys.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

Open Graph data is detected on the main page of Calling Sys. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: