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name

value

score

weighting

FCP (First Contentful Paint)

Value1.2 s

99/100

10%

LCP (Largest Contentful Paint)

Value3.0 s

77/100

25%

SI (Speed Index)

Value4.9 s

66/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.006

100/100

15%

TTI (Time to Interactive)

Value1.2 s

100/100

10%

co.rhvacnet.com

2195 ms

index_style.css

537 ms

foot.css

508 ms

head.css

511 ms

logo.jpg

1019 ms

Our browser made a total of 72 requests to load all elements on the main page. We found that 90% of them (65 requests) were addressed to the original Co.rhvacnet.com, 10% (7 requests) were made to User.rhvacnet.com. The less responsive or slowest element that took the longest time to load (2.5 sec) belongs to the original domain Co.rhvacnet.com.

Content Size

395.3 kB

After Optimization

278.0 kB

In fact, the total size of Co.rhvacnet.com main page is 395.3 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. 20% of websites need less resources to load. Images take 290.8 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 69.3 kB

Original 85.2 kB
After minification 74.8 kB
After compression 15.9 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 10.4 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 69.3 kB or 81% of the original size.

Image Optimization

-11%

Potential reduce by 31.9 kB

Original 290.8 kB
After minification 258.9 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, Co Rhvacnet needs image optimization as it can save up to 31.9 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

CSS Optimization

-84%

Potential reduce by 16.2 kB

Original 19.4 kB
After minification 15.9 kB
After compression 3.1 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. Co.rhvacnet.com needs all CSS files to be minified and compressed as it can save up to 16.2 kB or 84% of the original size.

Requests Now

After Optimization

The browser has sent 71 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Co Rhvacnet. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests 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 keyboard navigation in your application.

High

[id] attributes on active, focusable elements are not unique

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

High

<input type="image"> elements do not have [alt] text

High

Form elements do not have associated labels

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

List items (<li>) are not contained within <ul> or <ol> parent elements.

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

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

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 Co.rhvacnet.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 Co.rhvacnet.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

co.rhvacnet.com

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

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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

co.rhvacnet.com

index_style.css

foot.css

head.css

logo.jpg

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

co.rhvacnet.com

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