Tools & Wizards About Us
cart.jlcpcb.com screenshot

Report Summary

  • 14

    Performance

    Renders faster than
    26% of other websites

  • 75

    Accessibility

    Visual factors better than
    that of 41% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 67

    SEO

    Google-friendlier than
    26% of websites

cart.jlcpcb.com

PCB Prototype & PCB Fabrication Manufacturer - JLCPCB

Page Load Speed

2.4 sec in total

First Response

16 ms

Resources Loaded

2.3 sec

Page Rendered

65 ms

cart.jlcpcb.com screenshot

About Website

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

Instant online PCB quote, get PCBs for only $2. Check design with the online gerber viewer, Easy and quick PCB Price Calculator from JLCPCB

Visit cart.jlcpcb.com

Key Findings

We analyzed Cart.jlcpcb.com page load time and found that the first response time was 16 ms and then it took 2.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

cart.jlcpcb.com performance score

14

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value24.9 s

0/100

10%

LCP (Largest Contentful Paint)

Value34.4 s

0/100

25%

SI (Speed Index)

Value24.9 s

0/100

10%

TBT (Total Blocking Time)

Value3,650 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.097

90/100

15%

TTI (Time to Interactive)

Value44.6 s

0/100

10%

Network Requests Diagram

cart.jlcpcb.com

16 ms

quote

2 ms

quote

293 ms

country-iconfont.v1.0.0.js

914 ms

jlcpcb.sensors.v1.0.3.js

1677 ms

Our browser made a total of 34 requests to load all elements on the main page. We found that 29% of them (10 requests) were addressed to the original Cart.jlcpcb.com, 21% (7 requests) were made to Googletagmanager.com and 6% (2 requests) were made to Static.jlcpcb.com. The less responsive or slowest element that took the longest time to load (1.7 sec) relates to the external source Static.jlcpcb.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 3.6 MB (68%)

Content Size

5.3 MB

After Optimization

1.7 MB

  • HTML
  • JavaScript
  • CSS

In fact, the total size of Cart.jlcpcb.com main page is 5.3 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. 45% of websites need less resources to load. Javascripts take 3.4 MB which makes up the majority of the site volume.

HTML Optimization

-73%

Potential reduce by 1.2 MB

  • Original 1.6 MB
  • After minification 1.6 MB
  • After compression 445.2 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 1.2 MB or 73% of the original size.

JavaScript Optimization

-64%

Potential reduce by 2.2 MB

  • Original 3.4 MB
  • After minification 3.4 MB
  • After compression 1.2 MB

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 2.2 MB or 64% of the original size.

CSS Optimization

-82%

Potential reduce by 223.0 kB

  • Original 272.9 kB
  • After minification 272.9 kB
  • After compression 49.8 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. Cart.jlcpcb.com needs all CSS files to be minified and compressed as it can save up to 223.0 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 24 (77%)

Requests Now

31

After Optimization

7

  • Images
  • JavaScript
  • CSS

The browser has sent 31 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cart JLCPCB. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 25 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

cart.jlcpcb.com

cart.jlcpcb.com

16 ms

quote

quote

2 ms

quote

quote

293 ms

country-iconfont.v1.0.0.js

country-iconfont.v1.0.0.js

914 ms

jlcpcb.sensors.v1.0.3.js

jlcpcb.sensors.v1.0.3.js

1677 ms

tracking.js

tracking.js

33 ms

gtm.js

gtm.js

130 ms

js

js

239 ms

js

js

314 ms

js

js

387 ms

b305d46.css

b305d46.css

304 ms

a893e88.css

a893e88.css

681 ms

state.js

state.js

385 ms

76517b8.js

76517b8.js

385 ms

c8ede616806389aafbb5.js

c8ede616806389aafbb5.js

672 ms

cbe7baaf474d85cf9674.js

cbe7baaf474d85cf9674.js

853 ms

21cca30d12545fe43cfb.js

21cca30d12545fe43cfb.js

1660 ms

js

js

147 ms

uwt.js

uwt.js

254 ms

insight.min.js

insight.min.js

326 ms

hotjar-3744015.js

hotjar-3744015.js

325 ms

bat.js

bat.js

319 ms

fbevents.js

fbevents.js

242 ms

js

js

204 ms

js

js

239 ms

134631188.js

134631188.js

27 ms

insight.old.min.js

insight.old.min.js

9 ms

modules.84f80a92c39bbd76564a.js

modules.84f80a92c39bbd76564a.js

42 ms

adsct

adsct

109 ms

adsct

adsct

166 ms

adsct

adsct

134 ms

adsct

adsct

135 ms

134631188

134631188

74 ms

clarity.js

clarity.js

27 ms

Accessibility Review

cart.jlcpcb.com accessibility score

75

Accessibility Issues

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

High

Form elements do not have associated labels

High

Links do not have a discernible name

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

cart.jlcpcb.com best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

cart.jlcpcb.com SEO score

67

Search Engine Optimization Advices

Content Best Practices

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

Impact

Issue

High

Links do not have descriptive text

High

Image elements do not have [alt] attributes

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

High

robots.txt is not valid

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

High

Tap targets are not sized appropriately

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 Cart.jlcpcb.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 Cart.jlcpcb.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

cart.jlcpcb.com

Open Graph description is not detected on the main page of Cart JLCPCB. 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: