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About Website

Welcome to sum-battery.com homepage info - get ready to check SUM Battery best content right away, or after learning these important things about sum-battery.com

Dongguan SUM Electronics Technology Co.,Ltd: Professional lithium batteries factory, customized any lithium battery, get free samples and free technical support.

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name

value

score

weighting

FCP (First Contentful Paint)

Value3.1 s

48/100

10%

LCP (Largest Contentful Paint)

Value4.7 s

33/100

25%

SI (Speed Index)

Value4.3 s

76/100

10%

TBT (Total Blocking Time)

Value70 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value4.5 s

82/100

10%

sum-battery.com

447 ms

www.sum-battery.com

555 ms

css2

30 ms

style.css

299 ms

home.css

303 ms

Our browser made a total of 46 requests to load all elements on the main page. We found that 33% of them (15 requests) were addressed to the original Sum-battery.com, 28% (13 requests) were made to Img01.v15cdn.com and 22% (10 requests) were made to Css02.v15cdn.com. The less responsive or slowest element that took the longest time to load (849 ms) belongs to the original domain Sum-battery.com.

Content Size

859.8 kB

After Optimization

805.7 kB

In fact, the total size of Sum-battery.com main page is 859.8 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. 40% of websites need less resources to load. Images take 686.0 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 40.9 kB

Original 50.0 kB
After minification 47.0 kB
After compression 9.1 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 40.9 kB or 82% of the original size.

Image Optimization

-0%

Potential reduce by 2 B

Original 686.0 kB
After minification 686.0 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. SUM Battery images are well optimized though.

JavaScript Optimization

-13%

Potential reduce by 13.0 kB

Original 101.5 kB
After minification 101.5 kB
After compression 88.5 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 13.0 kB or 13% of the original size.

CSS Optimization

-1%

Potential reduce by 265 B

Original 22.4 kB
After minification 22.4 kB
After compression 22.1 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. Sum-battery.com has all CSS files already compressed.

Requests Now

After Optimization

The browser has sent 42 CSS, Javascripts, AJAX and image requests in order to completely render the main page of SUM Battery. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

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

Search Engine Optimization Advices

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

EN
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sum-battery.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Sum-battery.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

sum-battery.com

Open Graph data is detected on the main page of SUM Battery. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook:

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Performance

Accessibility

Best Practices

SEO

China Polymer Lithium Battery Manufacturers, Lifepo4 Lithium Battery Suppliers, 18650 Lithium Battery Factory | SUM

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)