Tools & Wizards About Us
caosim.com screenshot

Report Summary

  • 15

    Performance

    Renders faster than
    27% of other websites

  • 71

    Accessibility

    Visual factors better than
    that of 37% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 91

    SEO

    Google-friendlier than
    71% of websites

caosim.com

caosim - Kho Sim Số Đẹp Giá Rẻ Lớn Nhất Việt Nam

Page Load Speed

6.4 sec in total

First Response

1.1 sec

Resources Loaded

5 sec

Page Rendered

261 ms

caosim.com screenshot

About Website

Visit caosim.com now to see the best up-to-date Cao Sim content for Vietnam and also check out these interesting facts you probably never knew about caosim.com

caosim.com web dành riêng cho thợ sim, điểm bán điện thoại và cộng tác viên . Với 9 triệu sim, caosim.com trở thành kho Sim số đẹp lớn nhất Việt Nam bao gồm sim số đẹp các mạng Viettel, Vinaphone, Mob...

Visit caosim.com

Key Findings

We analyzed Caosim.com page load time and found that the first response time was 1.1 sec and then it took 5.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

caosim.com performance score

15

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.9 s

1/100

10%

LCP (Largest Contentful Paint)

Value8.5 s

2/100

25%

SI (Speed Index)

Value13.0 s

2/100

10%

TBT (Total Blocking Time)

Value5,480 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.104

89/100

15%

TTI (Time to Interactive)

Value14.1 s

10/100

10%

Network Requests Diagram

caosim.com

1059 ms

bootstrap.min.css

860 ms

font-awesome.min.css

617 ms

fonts.googleapis.com.css

593 ms

main.css

619 ms

Our browser made a total of 39 requests to load all elements on the main page. We found that 95% of them (37 requests) were addressed to the original Caosim.com, 5% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (2.7 sec) belongs to the original domain Caosim.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 628.0 kB (73%)

Content Size

863.5 kB

After Optimization

235.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Caosim.com main page is 863.5 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. Javascripts take 327.1 kB which makes up the majority of the site volume.

HTML Optimization

-90%

Potential reduce by 208.1 kB

  • Original 232.2 kB
  • After minification 163.8 kB
  • After compression 24.1 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 68.4 kB, which is 29% 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 208.1 kB or 90% of the original size.

Image Optimization

-20%

Potential reduce by 21.9 kB

  • Original 110.8 kB
  • After minification 88.9 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. Obviously, Cao Sim needs image optimization as it can save up to 21.9 kB or 20% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-74%

Potential reduce by 240.8 kB

  • Original 327.1 kB
  • After minification 271.5 kB
  • After compression 86.3 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 240.8 kB or 74% of the original size.

CSS Optimization

-81%

Potential reduce by 157.2 kB

  • Original 193.5 kB
  • After minification 187.4 kB
  • After compression 36.3 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. Caosim.com needs all CSS files to be minified and compressed as it can save up to 157.2 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 12 (32%)

Requests Now

38

After Optimization

26

  • Images
  • JavaScript
  • CSS

The browser has sent 38 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cao Sim. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

caosim.com

caosim.com

1059 ms

bootstrap.min.css

bootstrap.min.css

860 ms

font-awesome.min.css

font-awesome.min.css

617 ms

fonts.googleapis.com.css

fonts.googleapis.com.css

593 ms

main.css

main.css

619 ms

css.css

css.css

607 ms

dodai.css

dodai.css

809 ms

miniframework.css

miniframework.css

1183 ms

jquery-1.9.1.min.js

jquery-1.9.1.min.js

1467 ms

jquery.history.js

jquery.history.js

899 ms

bootstrap.min.js

bootstrap.min.js

918 ms

main.js

main.js

1104 ms

home.js

home.js

1170 ms

stickytooltip.js

stickytooltip.js

1467 ms

header-bg.jpg

header-bg.jpg

284 ms

logo.jpg

logo.jpg

1027 ms

nav-a-bg.jpg

nav-a-bg.jpg

567 ms

cao%20sim.jpg

cao%20sim.jpg

573 ms

lam-sim-sinh-vien(2).jpg

lam-sim-sinh-vien(2).jpg

1141 ms

sim-dep.jpg

sim-dep.jpg

1099 ms

viettel-1.jpg

viettel-1.jpg

883 ms

mobifone-1.jpg

mobifone-1.jpg

1129 ms

vinafone-1.jpg

vinafone-1.jpg

1147 ms

face.png

face.png

1442 ms

google.png

google.png

1609 ms

in.png

in.png

1661 ms

z.png

z.png

1659 ms

tieudemuc-bg.jpg

tieudemuc-bg.jpg

1693 ms

tieudemuccon-bg.jpg

tieudemuccon-bg.jpg

1719 ms

formsearch-bg.jpg

formsearch-bg.jpg

1995 ms

go-bg.jpg

go-bg.jpg

2177 ms

righttintuc-a.jpg

righttintuc-a.jpg

2171 ms

simsothich-td-bg.jpg

simsothich-td-bg.jpg

2172 ms

simtieude-bg.jpg

simtieude-bg.jpg

2271 ms

datmua.jpg

datmua.jpg

2248 ms

footer-bg-li.png

footer-bg-li.png

2541 ms

footer-dit.png

footer-dit.png

2718 ms

analytics.js

analytics.js

6 ms

collect

collect

15 ms

Accessibility Review

caosim.com accessibility score

71

Accessibility Issues

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

Buttons do not have an accessible name

High

Links do not have a discernible name

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.

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

caosim.com best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

caosim.com SEO score

91

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    VI

  • Language Claimed

    VI

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Caosim.com can be misinterpreted by Google and other search engines. Our service has detected that Vietnamese is used on the page, and it matches the claimed language. Our system also found out that Caosim.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

caosim.com

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