Access hvacr.vn. HVACR.VN - Cộng Đồng Kỹ Sư Cơ Điện Lạnh Việt Nam

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

38/100

10%

LCP (Largest Contentful Paint)

Value5.3 s

21/100

25%

SI (Speed Index)

Value13.4 s

2/100

10%

TBT (Total Blocking Time)

Value3,980 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value17.0 s

4/100

10%

hvacr.vn

545 ms

400 ms

css.php

1483 ms

css.php

856 ms

preamble.min.js

790 ms

Our browser made a total of 71 requests to load all elements on the main page. We found that 31% of them (22 requests) were addressed to the original Hvacr.vn, 28% (20 requests) were made to Cdn.hvacr.vn and 8% (6 requests) were made to Googleads.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (2.7 sec) belongs to the original domain Hvacr.vn.

Content Size

1.1 MB

After Optimization

1.0 MB

In fact, the total size of Hvacr.vn main page is 1.1 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. 45% of websites need less resources to load. Javascripts take 569.1 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 62.1 kB

Original 80.6 kB
After minification 74.3 kB
After compression 18.6 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. 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 62.1 kB or 77% of the original size.

Image Optimization

-5%

Potential reduce by 25.2 kB

Original 469.5 kB
After minification 444.3 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. HVACR images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 6.2 kB

Original 569.1 kB
After minification 569.1 kB
After compression 562.9 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. This website has mostly compressed JavaScripts.

Requests Now

After Optimization

The browser has sent 63 CSS, Javascripts, AJAX and image requests in order to completely render the main page of HVACR. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 24 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Issues

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 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

Areas of Improvement

High

Does not use HTTPS

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

High

Page has valid source maps

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

VI
Language Claimed

VI
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Hvacr.vn 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 Hvacr.vn 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 HVACR. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: