Tools & Wizards About Us
app17.com screenshot

Report Summary

  • 47

    Performance

    Renders faster than
    65% of other websites

  • 52

    Accessibility

    Visual factors better than
    that of 21% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 84

    SEO

    Google-friendlier than
    52% of websites

app17.com

阿仪网-仪器信息网,仪器仪表专业平台

Page Load Speed

19.6 sec in total

First Response

592 ms

Resources Loaded

17.4 sec

Page Rendered

1.6 sec

app17.com screenshot

About Website

Welcome to app17.com homepage info - get ready to check App 17 best content for China right away, or after learning these important things about app17.com

阿仪网致力于为采购商更容易找自己仪器仪表产品信息,仪器仪表企业网络宣传和推广更有效，平台提供实验仪器,化工仪器,分析仪器,光学仪器,无损检测,物理仪器,环境检测,色谱仪器,生物检测,温度仪表,压力 仪表,流量仪表,电工仪表,量具量等产品,权威的行业资讯，促进行业人士之间的交流及交易，节省企业的营销和物流成本。

Visit app17.com

Key Findings

We analyzed App17.com page load time and found that the first response time was 592 ms and then it took 19 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.

Performance Metrics

app17.com performance score

47

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.7 s

13/100

10%

LCP (Largest Contentful Paint)

Value7.8 s

3/100

25%

SI (Speed Index)

Value8.3 s

19/100

10%

TBT (Total Blocking Time)

Value80 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.112

86/100

15%

TTI (Time to Interactive)

Value49.0 s

0/100

10%

Network Requests Diagram

app17.com

592 ms

www.app17.com

1472 ms

common.ashx

408 ms

Industry.IndustryAction,Industry.ashx

414 ms

jquery.js

1079 ms

Our browser made a total of 223 requests to load all elements on the main page. We found that 10% of them (23 requests) were addressed to the original App17.com, 30% (67 requests) were made to Img1.app17.com and 28% (63 requests) were made to Img10.app17.com. The less responsive or slowest element that took the longest time to load (14.9 sec) relates to the external source Img10.app17.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 3.4 MB (20%)

Content Size

16.8 MB

After Optimization

13.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of App17.com main page is 16.8 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. 80% 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 16.2 MB which makes up the majority of the site volume.

HTML Optimization

-89%

Potential reduce by 505.1 kB

  • Original 566.5 kB
  • After minification 396.3 kB
  • After compression 61.5 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 170.2 kB, which is 30% 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 505.1 kB or 89% of the original size.

Image Optimization

-17%

Potential reduce by 2.8 MB

  • Original 16.2 MB
  • After minification 13.3 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, App 17 needs image optimization as it can save up to 2.8 MB or 17% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-26%

Potential reduce by 18.2 kB

  • Original 69.9 kB
  • After minification 69.9 kB
  • After compression 51.6 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 18.2 kB or 26% of the original size.

CSS Optimization

-40%

Potential reduce by 9.3 kB

  • Original 23.1 kB
  • After minification 23.1 kB
  • After compression 13.8 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. App17.com needs all CSS files to be minified and compressed as it can save up to 9.3 kB or 40% of the original size.

Requests Breakdown

Number of requests can be reduced by 13 (6%)

Requests Now

220

After Optimization

207

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 220 CSS, Javascripts, AJAX and image requests in order to completely render the main page of App 17. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

app17.com

app17.com

592 ms

www.app17.com

www.app17.com

1472 ms

common.ashx

common.ashx

408 ms

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Industry.IndustryAction,Industry.ashx

414 ms

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1079 ms

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695 ms

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Accessibility Review

app17.com accessibility score

52

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.

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

Definition list items are not wrapped in <dl> elements

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

app17.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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

app17.com SEO score

84

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    N/A

  • Encoding

    GB2312

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise App17.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 App17.com main page’s claimed encoding is gb2312. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

app17.com

Open Graph description is not detected on the main page of App 17. 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: