Access central.co.th. Central Online | 9.9 | ลดสูงสุด 70% + ลดเพิ่ม 14%

name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

24/100

10%

LCP (Largest Contentful Paint)

Value45.4 s

0/100

25%

SI (Speed Index)

Value23.1 s

0/100

10%

TBT (Total Blocking Time)

Value21,070 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.739

6/100

15%

TTI (Time to Interactive)

Value52.7 s

0/100

10%

central.co.th

481 ms

www.central.co.th

28 ms

th

119 ms

api.js

114 ms

client

318 ms

Our browser made a total of 109 requests to load all elements on the main page. We found that 28% of them (31 requests) were addressed to the original Central.co.th, 25% (27 requests) were made to S7ap1.scene7.com and 23% (25 requests) were made to Assets.central.co.th. The less responsive or slowest element that took the longest time to load (2.4 sec) relates to the external source S7ap1.scene7.com.

Content Size

2.6 MB

After Optimization

1.8 MB

In fact, the total size of Central.co.th main page is 2.6 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 709.3 kB

Original 827.2 kB
After minification 689.7 kB
After compression 117.9 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 137.5 kB, which is 17% 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 709.3 kB or 86% of the original size.

Image Optimization

-6%

Potential reduce by 76.0 kB

Original 1.3 MB
After minification 1.3 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. Central images are well optimized though.

JavaScript Optimization

-14%

Potential reduce by 57.8 kB

Original 414.9 kB
After minification 414.9 kB
After compression 357.1 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 57.8 kB or 14% of the original size.

CSS Optimization

-66%

Potential reduce by 12.4 kB

Original 18.7 kB
After minification 15.7 kB
After compression 6.3 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. Central.co.th needs all CSS files to be minified and compressed as it can save up to 12.4 kB or 66% of the original size.

Requests Now

After Optimization

The browser has sent 98 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Central. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 31 to 1 for JavaScripts and from 6 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 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

High

Links do not have a discernible name

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Areas of Improvement

High

Does not use HTTPS

High

Requests the geolocation permission on page load

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

Search Engine Optimization Advices

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

High

Links are not crawlable

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

N/A
Language Claimed

TH
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Central.co.th can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is Thai. Our system also found out that Central.co.th 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

central.co.th

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

Central Online | 9.9 | ลดสูงสุด 70% + ลดเพิ่ม 14%

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

central.co.th

www.central.co.th

th

api.js

client

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

central.co.th

www.central.co.th

th

api.js

client

croprod.css

build_2_75.min.js

build.min.js

optimize.js

clientlib-base.lc-4619fa99b040189420b8a71f3340d35d-lc.min.css

clientlib-cif.lc-8299930684c5ab6c4a9246830821444e-lc.min.css

clientlib-plugins.lc-655b85cc49c8fad5284de7b978c0c320-lc.min.css

clientlib-cds.lc-ddd42c7b93a08a30cc5bf78bb541bfe7-lc.min.css

js

ins.js

gtm.js

4k3poiahsb

jquery-3.6.0.min.js

jquery.lc-7842899024219bcbdb5e72c946870b79-lc.min.js

container.lc-0a6aff292f5cc42142779cde92054524-lc.min.js

clientlib-base.lc-f0f4e56bad3e0d20e47b305359329a16-lc.min.js

common.lc-72a6a24541a7c9465a2ee536b75f57f7-lc.min.js

clientlib-cif.lc-cf72df109ae9c525abf8b6889fbc1bc3-lc.min.js

clientlib-plugins.lc-a4a9f22c5bef95d20b1e37735ab8ba2b-lc.min.js

clientlib-prod.lc-840e2cab665581004f650d8ec548aeda-lc.min.js

clientlib-cds.lc-32a0935c8515a32d4c3a567bcc28a88d-lc.min.js

esw.min.js

optimize.js

optimize.js

recaptcha__en.js

search-insights.min.js

logo-1

20240424_SBTC_Teaser_Giftwrapping

box-real-for-app-hires.jpg

rectangle-775387.png

shopping-bag-return-arrow-left.png

certificate-checkmark.png

certificate-medal.png

%D1%81oupon-discount.png

tools-hammer.png

Circle-info-2

Warning

new-blackcoupon.png