Access blackcatsolution.com. 开云网页版-开云(中国)官方网站登录界面-开云网页版-开云(中国)官方网站登录界面

name

value

score

weighting

FCP (First Contentful Paint)

Value6.0 s

3/100

10%

LCP (Largest Contentful Paint)

Value6.1 s

12/100

25%

SI (Speed Index)

Value18.2 s

0/100

10%

TBT (Total Blocking Time)

Value550 ms

53/100

30%

CLS (Cumulative Layout Shift)

Value0.255

48/100

15%

TTI (Time to Interactive)

Value8.8 s

35/100

10%

blackcatsolution.com

207 ms

www.blackcatsolution.com

874 ms

bootstrap.min.css

31 ms

style.css

132 ms

font-awesome.min.css

47 ms

Our browser made a total of 50 requests to load all elements on the main page. We found that 66% of them (33 requests) were addressed to the original Blackcatsolution.com, 20% (10 requests) were made to Fonts.gstatic.com and 6% (3 requests) were made to Cdnjs.cloudflare.com. The less responsive or slowest element that took the longest time to load (874 ms) belongs to the original domain Blackcatsolution.com.

Content Size

4.7 MB

After Optimization

4.4 MB

In fact, the total size of Blackcatsolution.com main page is 4.7 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. 60% of websites need less resources to load. Images take 4.5 MB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 12.4 kB

Original 16.0 kB
After minification 13.2 kB
After compression 3.7 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 2.8 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 12.4 kB or 77% of the original size.

Image Optimization

-4%

Potential reduce by 197.0 kB

Original 4.5 MB
After minification 4.3 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. Blackcatsolution images are well optimized though.

JavaScript Optimization

-50%

Potential reduce by 56.6 kB

Original 114.1 kB
After minification 109.7 kB
After compression 57.4 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 56.6 kB or 50% of the original size.

CSS Optimization

-76%

Potential reduce by 7.7 kB

Original 10.1 kB
After minification 7.1 kB
After compression 2.4 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. Blackcatsolution.com needs all CSS files to be minified and compressed as it can save up to 7.7 kB or 76% of the original size.

Requests Now

After Optimization

The browser has sent 37 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Blackcatsolution. 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 5 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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 interpretation of your content by users in different locales.

High

<html> element does not have a [lang] attribute

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

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

Browser errors were logged to the console

High

Page has valid source maps

Search Engine Optimization Advices

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Links do not have descriptive text

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

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 Blackcatsolution.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 Blackcatsolution.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

blackcatsolution.com

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

开云网页版-开云(中国)官方网站登录界面-开云网页版-开云(中国)官方网站登录界面

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

blackcatsolution.com

www.blackcatsolution.com

bootstrap.min.css

style.css

font-awesome.min.css

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

blackcatsolution.com

www.blackcatsolution.com

bootstrap.min.css

style.css

font-awesome.min.css

css

clients.css

5d19c6bbac860_logo.png

iso.png

phone.png

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jquery.min.js

popper.min.js

bootstrap.min.js

sticky.js

jquery-3.3.1.slim.min.js

grid-gallery.min.js

grouploop-1.0.0.js

5d175fb5d83a9_s1.jpg

5d175fd257b85_ss2.jpg

5d175fea1b044_ss3.jpg

5d175ffcc9982_s2.jpg

star.png

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KFOlCnqEu92Fr1MmYUtfBBc9AMP6lQ.ttf