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din571.com screenshot

Report Summary

  • 72

    Performance

    Renders faster than
    82% of other websites

  • 69

    Accessibility

    Visual factors better than
    that of 34% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 54

    SEO

    Google-friendlier than
    19% of websites

din571.com

Haiyan Tianqi Fastener Co., Ltd.

Page Load Speed

5.6 sec in total

First Response

428 ms

Resources Loaded

4.9 sec

Page Rendered

352 ms

din571.com screenshot

About Website

Visit din571.com now to see the best up-to-date Din 571 content and also check out these interesting facts you probably never knew about din571.com

As a famous China Wood Screws manufacturers,Lag Screws suppliers and Tapping Screws wholesalers,Haiyan Tianqi Fastener Co., Ltd supply kinds of wood lag screws,Self Tapping Screws,and other self tappi...

Visit din571.com

Key Findings

We analyzed Din571.com page load time and found that the first response time was 428 ms and then it took 5.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

din571.com performance score

72

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

29/100

10%

LCP (Largest Contentful Paint)

Value3.7 s

57/100

25%

SI (Speed Index)

Value6.0 s

47/100

10%

TBT (Total Blocking Time)

Value190 ms

90/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value4.6 s

81/100

10%

Network Requests Diagram

din571.com

428 ms

din571.com

339 ms

js-sdk-pro.min.js

1394 ms

ifmobile.js

1033 ms

css.css

71 ms

Our browser made a total of 51 requests to load all elements on the main page. We found that 82% of them (42 requests) were addressed to the original Din571.com, 12% (6 requests) were made to Bdimg.share.baidu.com and 2% (1 request) were made to Sdk.51.la. The less responsive or slowest element that took the longest time to load (1.7 sec) relates to the external source Collect-v6.51.la.

Page Optimization Overview & Recommendations

Page size can be reduced by 51.0 kB (1%)

Content Size

5.2 MB

After Optimization

5.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Din571.com main page is 5.2 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. 40% of websites need less resources to load. Images take 5.1 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 21.4 kB

  • Original 27.4 kB
  • After minification 22.7 kB
  • After compression 6.0 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. This page needs HTML code to be minified as it can gain 4.7 kB, which is 17% 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 21.4 kB or 78% of the original size.

Image Optimization

-0%

Potential reduce by 16.3 kB

  • Original 5.1 MB
  • After minification 5.1 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. Din 571 images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 22 B

  • Original 44.7 kB
  • After minification 44.7 kB
  • After compression 44.7 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

-49%

Potential reduce by 13.3 kB

  • Original 27.4 kB
  • After minification 25.6 kB
  • After compression 14.1 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. Din571.com needs all CSS files to be minified and compressed as it can save up to 13.3 kB or 49% of the original size.

Requests Breakdown

Number of requests can be reduced by 16 (35%)

Requests Now

46

After Optimization

30

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 46 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Din 571. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

din571.com

din571.com

428 ms

din571.com

din571.com

339 ms

js-sdk-pro.min.js

js-sdk-pro.min.js

1394 ms

ifmobile.js

ifmobile.js

1033 ms

css.css

css.css

71 ms

reset.css

reset.css

140 ms

jquery-1.8.3.min.js

jquery-1.8.3.min.js

261 ms

common.js

common.js

210 ms

jquery.mousewheel-3.0.4.pack.js

jquery.mousewheel-3.0.4.pack.js

211 ms

jquery.fancybox-1.3.4.pack.js

jquery.fancybox-1.3.4.pack.js

211 ms

mobile.css

mobile.css

209 ms

tablet.css

tablet.css

218 ms

desktop.css

desktop.css

281 ms

idangerous.swiper.min.js

idangerous.swiper.min.js

335 ms

bar.js

bar.js

446 ms

jquery.qrcode.min.js

jquery.qrcode.min.js

281 ms

collect

collect

1650 ms

bj.jpg

bj.jpg

405 ms

logo.jpg

logo.jpg

77 ms

en.jpg

en.jpg

128 ms

dy.jpg

dy.jpg

123 ms

alb.jpg

alb.jpg

71 ms

fdj.jpg

fdj.jpg

126 ms

menu_bg.gif

menu_bg.gif

142 ms

M_X.png

M_X.png

150 ms

blank.png

blank.png

192 ms

banner_01.jpg

banner_01.jpg

307 ms

banner_02.jpg

banner_02.jpg

378 ms

banner_03.jpg

banner_03.jpg

384 ms

a95354724ab1e790b2b0149e5d0fefbc.jpg

a95354724ab1e790b2b0149e5d0fefbc.jpg

223 ms

3b1031a2c53806bd45289c780fecd2ac.jpg

3b1031a2c53806bd45289c780fecd2ac.jpg

263 ms

c57aeb8e0a56e81a9dcf4411950a7d55.jpg

c57aeb8e0a56e81a9dcf4411950a7d55.jpg

303 ms

2a5cefb507f56a6dcaf490164d59716d.jpg

2a5cefb507f56a6dcaf490164d59716d.jpg

442 ms

a25f8f95cd3ca7d58a17333971098126.jpg

a25f8f95cd3ca7d58a17333971098126.jpg

495 ms

c2dbd166f8893c8b5bb1693261a2d3c4.jpg

c2dbd166f8893c8b5bb1693261a2d3c4.jpg

543 ms

9208760cc3e830be7d02c7089df04c17.jpg

9208760cc3e830be7d02c7089df04c17.jpg

518 ms

bd3f508d25126c56908821a2b80f5f1a.jpg

bd3f508d25126c56908821a2b80f5f1a.jpg

564 ms

436d48980b7c28c9efc80eb452916419.jpg

436d48980b7c28c9efc80eb452916419.jpg

516 ms

964ca099514ad7efbc74472e4b92c995.jpg

964ca099514ad7efbc74472e4b92c995.jpg

621 ms

3ffbc6f7cd2fa8122b9215436e8adb26.jpg

3ffbc6f7cd2fa8122b9215436e8adb26.jpg

688 ms

arrows.png

arrows.png

582 ms

submenu_top.png

submenu_top.png

630 ms

case.png

case.png

600 ms

flyout-connectors.jpg

flyout-connectors.jpg

677 ms

share.js

share.js

1216 ms

select_right.gif

select_right.gif

630 ms

share_api.js

share_api.js

257 ms

share_view.js

share_view.js

510 ms

tangram.js

tangram.js

769 ms

api_base.js

api_base.js

506 ms

view_base.js

view_base.js

306 ms

Accessibility Review

din571.com accessibility score

69

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

Links do not have a discernible name

Best Practices

din571.com best practices score

50

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

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

Browser errors were logged to the console

SEO Factors

din571.com SEO score

54

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Din571.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Din571.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

din571.com

Open Graph description is not detected on the main page of Din 571. 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: