Access bgi.com. 华大基因 - 基因科技造福人类

name

value

score

weighting

FCP (First Contentful Paint)

Value7.0 s

1/100

10%

LCP (Largest Contentful Paint)

Value30.5 s

0/100

25%

SI (Speed Index)

Value40.3 s

0/100

10%

TBT (Total Blocking Time)

Value28,110 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value1

2/100

15%

TTI (Time to Interactive)

Value40.9 s

0/100

10%

bgi.com

668 ms

www.bgi.com

2363 ms

d8ece993cdc8a241.css

811 ms

polyfills-c67a75d1b6f99dc8.js

1428 ms

awsc.js

112 ms

Our browser made a total of 81 requests to load all elements on the main page. We found that 17% of them (14 requests) were addressed to the original Bgi.com, 60% (49 requests) were made to Cdn.it.bgi.com and 20% (16 requests) were made to Bgi-com-oss.oss-cn-shenzhen.aliyuncs.com. The less responsive or slowest element that took the longest time to load (5.9 sec) belongs to the original domain Bgi.com.

Content Size

20.2 MB

After Optimization

18.5 MB

In fact, the total size of Bgi.com main page is 20.2 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. 70% of websites need less resources to load. Images take 19.9 MB which makes up the majority of the site volume.

HTML Optimization

-91%

Potential reduce by 264.5 kB

Original 291.4 kB
After minification 291.4 kB
After compression 26.9 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. 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 264.5 kB or 91% of the original size.

Image Optimization

-7%

Potential reduce by 1.4 MB

Original 19.9 MB
After minification 18.4 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. Bgi images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 0 B

Original 90.0 kB
After minification 90.0 kB
After compression 90.0 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 78 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Bgi. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 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 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

Links do not have a discernible name

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

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

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 Bgi.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 Bgi.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

bgi.com

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

华大基因 - 基因科技造福人类

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

bgi.com

www.bgi.com

d8ece993cdc8a241.css

polyfills-c67a75d1b6f99dc8.js

awsc.js

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

bgi.com

www.bgi.com

d8ece993cdc8a241.css

polyfills-c67a75d1b6f99dc8.js

awsc.js

webpack-acc02936de6e1f98.js

framework-4556c45dd113b893.js

main-90b2ecf6ba2dfcb5.js

_app-d55e5739518d48e2.js

index-e43e46f73a5639e6.js

_buildManifest.js

_ssgManifest.js

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