Tools & Wizards About Us
jackery.com screenshot

Report Summary

  • 20

    Performance

    Renders faster than
    37% of other websites

  • 74

    Accessibility

    Visual factors better than
    that of 40% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

jackery.com

Jackery Best Solar Generator, Portable Power Station & Solar Panels

Page Load Speed

3.2 sec in total

First Response

632 ms

Resources Loaded

1.9 sec

Page Rendered

642 ms

jackery.com screenshot

About Website

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

Jackery® offers an array of portable power supply solutions, including solar generators, portable power stations & solar panels. Click to learn more!

Visit jackery.com

Key Findings

We analyzed Jackery.com page load time and found that the first response time was 632 ms and then it took 2.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

jackery.com performance score

20

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.8 s

58/100

10%

LCP (Largest Contentful Paint)

Value12.6 s

0/100

25%

SI (Speed Index)

Value31.4 s

0/100

10%

TBT (Total Blocking Time)

Value10,910 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.075

95/100

15%

TTI (Time to Interactive)

Value52.1 s

0/100

10%

Network Requests Diagram

www.jackery.com

632 ms

bat.js

59 ms

theme.bundle.css

46 ms

index.bundle.css

54 ms

vendor.min.js

61 ms

Our browser made a total of 221 requests to load all elements on the main page. We found that 81% of them (179 requests) were addressed to the original Jackery.com, 6% (13 requests) were made to Cdn.shopify.com and 4% (8 requests) were made to Static.klaviyo.com. The less responsive or slowest element that took the longest time to load (1.2 sec) relates to the external source Pixel.orichi.info.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.1 MB (11%)

Content Size

9.8 MB

After Optimization

8.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Jackery.com main page is 9.8 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. Only a small number of websites need less resources to load. Images take 8.3 MB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 690.3 kB

  • Original 805.1 kB
  • After minification 680.4 kB
  • After compression 114.8 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 124.7 kB, which is 15% 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 690.3 kB or 86% of the original size.

Image Optimization

-5%

Potential reduce by 415.4 kB

  • Original 8.3 MB
  • After minification 7.9 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. Jackery images are well optimized though.

JavaScript Optimization

-3%

Potential reduce by 18.2 kB

  • Original 675.2 kB
  • After minification 675.2 kB
  • After compression 657.0 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.

CSS Optimization

-1%

Potential reduce by 426 B

  • Original 40.8 kB
  • After minification 40.8 kB
  • After compression 40.3 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. Jackery.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 60 (28%)

Requests Now

214

After Optimization

154

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 214 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jackery. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 54 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.jackery.com

www.jackery.com

632 ms

bat.js

bat.js

59 ms

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46 ms

index.bundle.css

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54 ms

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108 ms

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228 ms

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255 ms

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137 ms

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137 ms

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137 ms

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142 ms

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141 ms

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141 ms

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140 ms

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137 ms

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137 ms

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66 ms

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69 ms

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65 ms

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63 ms

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77 ms

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64 ms

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81 ms

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79 ms

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87 ms

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82 ms

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80 ms

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87 ms

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117 ms

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93 ms

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101 ms

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101 ms

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134 ms

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134 ms

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136 ms

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133 ms

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133 ms

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135 ms

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132 ms

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128 ms

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Accessibility Review

jackery.com accessibility score

74

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Names and labels

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.

Impact

Issue

High

Image elements do not have [alt] attributes

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

jackery.com best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Requests the notification permission on page load

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

jackery.com SEO score

86

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

Content Best Practices

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

Impact

Issue

High

Image elements do not have [alt] attributes

Mobile Friendly

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/).

Impact

Issue

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 Jackery.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 Jackery.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

jackery.com

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