Access rosebatteries.com. Expert Battery Pack Engineering & Manufacturing for High-Reliability Applications

Report Summary

About Website

Welcome to rosebatteries.com homepage info - get ready to check Rosebatteries best content for United States right away, or after learning these important things about rosebatteries.com

High-Performance Lithium-Ion Battery Packs, Custom Battery Packs, Battery Chargers and Battery Pack Design Lithium-Ion, Lithium Iron Phosphate, LiPo

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name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

24/100

10%

LCP (Largest Contentful Paint)

Value16.4 s

0/100

25%

SI (Speed Index)

Value7.6 s

25/100

10%

TBT (Total Blocking Time)

Value590 ms

50/100

30%

CLS (Cumulative Layout Shift)

Value0.004

100/100

15%

TTI (Time to Interactive)

Value15.1 s

7/100

10%

rosebatteries.com

430 ms

www.rosebatteries.com

180 ms

jquery-1.7.1.js

49 ms

css2

36 ms

custom-styles.min.css

58 ms

Our browser made a total of 40 requests to load all elements on the main page. We found that 50% of them (20 requests) were addressed to the original Rosebatteries.com, 18% (7 requests) were made to Fonts.gstatic.com and 8% (3 requests) were made to 6584819.fs1.hubspotusercontent-na1.net. The less responsive or slowest element that took the longest time to load (641 ms) relates to the external source 6584819.fs1.hubspotusercontent-na1.net.

Content Size

743.6 kB

After Optimization

225.6 kB

In fact, the total size of Rosebatteries.com main page is 743.6 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. 65% of websites need less resources to load. HTML takes 618.9 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 509.9 kB

Original 618.9 kB
After minification 605.7 kB
After compression 109.0 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 509.9 kB or 82% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

Original 57.2 kB
After minification 57.2 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. Rosebatteries images are well optimized though.

JavaScript Optimization

-12%

Potential reduce by 7.3 kB

Original 60.8 kB
After minification 60.8 kB
After compression 53.5 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 7.3 kB or 12% of the original size.

CSS Optimization

-13%

Potential reduce by 893 B

Original 6.8 kB
After minification 6.8 kB
After compression 5.9 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. Rosebatteries.com needs all CSS files to be minified and compressed as it can save up to 893 B or 13% of the original size.

Requests Now

After Optimization

The browser has sent 30 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rosebatteries. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 21 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 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

Heading elements are not in a sequentially-descending order

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

Links do not have a discernible name

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

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 Rosebatteries.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 Rosebatteries.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

rosebatteries.com

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

Report Summary

Performance

Accessibility

Best Practices

SEO

Expert Battery Pack Engineering & Manufacturing for High-Reliability Applications

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)