Tools & Wizards About Us

Report Summary

  • 40

    Performance

    Renders faster than
    59% of other websites

  • 67

    Accessibility

    Visual factors better than
    that of 32% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 72

    SEO

    Google-friendlier than
    31% of websites

jzzfastener.net

China Fastener Info - The Most Popular Fastener Media of Bolts|Nuts|Rivets|Washers|Anchors

Page Load Speed

14.2 sec in total

First Response

697 ms

Resources Loaded

13.2 sec

Page Rendered

267 ms

About Website

Visit jzzfastener.net now to see the best up-to-date Jzz Fastener content and also check out these interesting facts you probably never knew about jzzfastener.net

The China's Fastener Info Center! Top fastener suppliers, Screws bolts and nuts studs washers rivets pins from china, China Fastener Directory for free, threaded rods anchor bolts chinese hardware chi...

Visit jzzfastener.net

Key Findings

We analyzed Jzzfastener.net page load time and found that the first response time was 697 ms and then it took 13.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

jzzfastener.net performance score

40

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.3 s

0/100

10%

LCP (Largest Contentful Paint)

Value13.9 s

0/100

25%

SI (Speed Index)

Value16.2 s

0/100

10%

TBT (Total Blocking Time)

Value260 ms

83/100

30%

CLS (Cumulative Layout Shift)

Value0.087

93/100

15%

TTI (Time to Interactive)

Value13.8 s

10/100

10%

Network Requests Diagram

jzzfastener.net

697 ms

www.chinafastenerinfo.net

2363 ms

bootstrap.css

235 ms

bottom.css

458 ms

top.css

680 ms

Our browser made a total of 97 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Jzzfastener.net, 91% (88 requests) were made to Chinafastenerinfo.net and 4% (4 requests) were made to At.alicdn.com. The less responsive or slowest element that took the longest time to load (8.5 sec) relates to the external source Chinafastenerinfo.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 324.7 kB (17%)

Content Size

1.9 MB

After Optimization

1.5 MB

  • HTML
  • Images
  • CSS

In fact, the total size of Jzzfastener.net main page is 1.9 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. 65% of websites need less resources to load. Images take 1.6 MB which makes up the majority of the site volume.

HTML Optimization

-94%

Potential reduce by 244.3 kB

  • Original 260.4 kB
  • After minification 114.3 kB
  • After compression 16.1 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. This page needs HTML code to be minified as it can gain 146.1 kB, which is 56% 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 244.3 kB or 94% of the original size.

Image Optimization

-5%

Potential reduce by 72.8 kB

  • Original 1.6 MB
  • After minification 1.5 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. Jzz Fastener images are well optimized though.

CSS Optimization

-17%

Potential reduce by 7.5 kB

  • Original 43.4 kB
  • After minification 43.0 kB
  • After compression 35.9 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. Jzzfastener.net needs all CSS files to be minified and compressed as it can save up to 7.5 kB or 17% of the original size.

Requests Breakdown

Number of requests can be reduced by 12 (13%)

Requests Now

93

After Optimization

81

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 93 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jzz Fastener. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

jzzfastener.net accessibility score

67

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

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

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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.

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

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

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

jzzfastener.net 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

Page has valid source maps

SEO Factors

jzzfastener.net SEO score

72

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

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 Jzzfastener.net 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 Jzzfastener.net 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

Open Graph description is not detected on the main page of Jzz Fastener. 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: