Tools & Wizards About Us
screwl.com screenshot

Report Summary

  • 9

    Performance

    Renders faster than
    23% of other websites

  • 54

    Accessibility

    Visual factors better than
    that of 23% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 85

    SEO

    Google-friendlier than
    55% of websites

screwl.com

特殊螺丝,自攻螺丝,非标螺丝,螺丝订制,螺丝规格,螺钉,阳江螺丝厂【官方网站】

Page Load Speed

34.4 sec in total

First Response

688 ms

Resources Loaded

33 sec

Page Rendered

710 ms

screwl.com screenshot

About Website

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

广东锦泰五金科技有限公司是一家专注非标螺丝,特殊螺丝研发,生产,销售于一体的螺丝厂,主营产品有自攻螺丝,螺钉,不锈钢螺丝等,并于2010年注册锦锢（JSCREW）螺丝品牌.

Visit screwl.com

Key Findings

We analyzed Screwl.com page load time and found that the first response time was 688 ms and then it took 33.7 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster.

Performance Metrics

screwl.com performance score

9

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value10.1 s

0/100

10%

LCP (Largest Contentful Paint)

Value13.1 s

0/100

25%

SI (Speed Index)

Value18.9 s

0/100

10%

TBT (Total Blocking Time)

Value4,420 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.209

59/100

15%

TTI (Time to Interactive)

Value32.7 s

0/100

10%

Network Requests Diagram

screwl.com

688 ms

screwl.com

3219 ms

qhdcontent.css

1470 ms

content.css

1472 ms

menu.css

1052 ms

Our browser made a total of 264 requests to load all elements on the main page. We found that 58% of them (153 requests) were addressed to the original Screwl.com, 9% (24 requests) were made to Log.mmstat.com and 9% (24 requests) were made to Gm.mmstat.com. The less responsive or slowest element that took the longest time to load (14.2 sec) belongs to the original domain Screwl.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.9 MB (17%)

Content Size

10.9 MB

After Optimization

9.0 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Screwl.com main page is 10.9 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 9.3 MB which makes up the majority of the site volume.

HTML Optimization

-92%

Potential reduce by 233.1 kB

  • Original 252.7 kB
  • After minification 164.0 kB
  • After compression 19.6 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 88.7 kB, which is 35% 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 233.1 kB or 92% of the original size.

Image Optimization

-12%

Potential reduce by 1.1 MB

  • Original 9.3 MB
  • After minification 8.2 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. Obviously, Screwl needs image optimization as it can save up to 1.1 MB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-27%

Potential reduce by 253.4 kB

  • Original 952.3 kB
  • After minification 926.9 kB
  • After compression 698.9 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 253.4 kB or 27% of the original size.

CSS Optimization

-88%

Potential reduce by 297.6 kB

  • Original 339.6 kB
  • After minification 275.5 kB
  • After compression 42.0 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. Screwl.com needs all CSS files to be minified and compressed as it can save up to 297.6 kB or 88% of the original size.

Requests Breakdown

Number of requests can be reduced by 110 (44%)

Requests Now

249

After Optimization

139

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 249 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Screwl. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 65 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

screwl.com

screwl.com

688 ms

screwl.com

screwl.com

3219 ms

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2409 ms

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2184 ms

Accessibility Review

screwl.com accessibility score

54

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.

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

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

screwl.com best practices score

67

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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

screwl.com SEO score

85

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

    ZH

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Screwl.com can be misinterpreted by Google and other search engines. Our service has detected that Chinese 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 Screwl.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

screwl.com

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