Tools & Wizards About Us
btbvalve.com screenshot

Report Summary

  • 18

    Performance

    Renders faster than
    34% of other websites

  • 67

    Accessibility

    Visual factors better than
    that of 32% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

btbvalve.com

玉环比得宝有限公司

Page Load Speed

7.3 sec in total

First Response

660 ms

Resources Loaded

6.5 sec

Page Rendered

109 ms

btbvalve.com screenshot

About Website

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

玉环比得宝气阀有限公司，成立于2005年，专业制造与研发气动角座阀与其他气动阀门，十余年生产经验与技术积累，数十项技术创新，做到小阀门，大技术。针对各种极端工况，如高频，高温等需求，实现产品各项指标完全达到用户使用标准。严格遵循ISO9001及6S质量认证与生产体系，配合进口设备与先进生产工艺，产品达到国内行业领先水平。长期与世界五百强，中国五百强等企业合作，覆盖包装、橡塑、印染、汽配等数十种行业...

Visit btbvalve.com

Key Findings

We analyzed Btbvalve.com page load time and found that the first response time was 660 ms and then it took 6.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

btbvalve.com performance score

18

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.3 s

1/100

10%

LCP (Largest Contentful Paint)

Value8.4 s

2/100

25%

SI (Speed Index)

Value21.1 s

0/100

10%

TBT (Total Blocking Time)

Value1,960 ms

8/100

30%

CLS (Cumulative Layout Shift)

Value0.004

100/100

15%

TTI (Time to Interactive)

Value41.0 s

0/100

10%

Network Requests Diagram

btbvalve.com

660 ms

css.css

150 ms

pub.js

214 ms

3310210700500575.js

2789 ms

index_02.jpg

83 ms

Our browser made a total of 43 requests to load all elements on the main page. We found that 95% of them (41 requests) were addressed to the original Btbvalve.com, 2% (1 request) were made to Zjnet.zjaic.gov.cn and 2% (1 request) were made to Idinfo.zjaic.gov.cn. The less responsive or slowest element that took the longest time to load (3.1 sec) relates to the external source Idinfo.zjaic.gov.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 61.9 kB (30%)

Content Size

209.6 kB

After Optimization

147.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Btbvalve.com main page is 209.6 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 15% of websites need less resources to load. Images take 156.9 kB which makes up the majority of the site volume.

HTML Optimization

-90%

Potential reduce by 36.0 kB

  • Original 40.1 kB
  • After minification 30.3 kB
  • After compression 4.1 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 9.8 kB, which is 25% 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 36.0 kB or 90% of the original size.

Image Optimization

-10%

Potential reduce by 16.3 kB

  • Original 156.9 kB
  • After minification 140.6 kB

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. Btbvalve images are well optimized though.

JavaScript Optimization

-78%

Potential reduce by 7.2 kB

  • Original 9.3 kB
  • After minification 6.1 kB
  • After compression 2.1 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 7.2 kB or 78% of the original size.

CSS Optimization

-71%

Potential reduce by 2.4 kB

  • Original 3.4 kB
  • After minification 2.9 kB
  • After compression 985 B

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. Btbvalve.com needs all CSS files to be minified and compressed as it can save up to 2.4 kB or 71% of the original size.

Requests Breakdown

Number of requests can be reduced by 15 (36%)

Requests Now

42

After Optimization

27

  • Images
  • JavaScript
  • CSS

The browser has sent 42 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Btbvalve. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Network Requests Diagram

btbvalve.com

btbvalve.com

660 ms

css.css

css.css

150 ms

pub.js

pub.js

214 ms

3310210700500575.js

3310210700500575.js

2789 ms

index_02.jpg

index_02.jpg

83 ms

Angle_Seat_Valve(BTB7239___BTB7339__).jpg

Angle_Seat_Valve(BTB7239___BTB7339__).jpg

1249 ms

Three_Way_Angle_Seat_Valve(BTB7259___BTB7359__).jpg

Three_Way_Angle_Seat_Valve(BTB7259___BTB7359__).jpg

1248 ms

Right_Angle_Seat_Valve(BTB734908L-40).jpg

Right_Angle_Seat_Valve(BTB734908L-40).jpg

1325 ms

Flange_Angle_Seat_Valve.jpg

Flange_Angle_Seat_Valve.jpg

1265 ms

Flange_Right_Angle_Seat_Valve.jpg

Flange_Right_Angle_Seat_Valve.jpg

1334 ms

Threaded_Pneumatic_Angle_Seat_Valve(BTB925903-10).jpg

Threaded_Pneumatic_Angle_Seat_Valve(BTB925903-10).jpg

1267 ms

Three_Way_Angle_Seat_Valve(BTB3935905-25).jpg

Three_Way_Angle_Seat_Valve(BTB3935905-25).jpg

1384 ms

Three_Way_Piston_Valve(BTB3734905-20).jpg

Three_Way_Piston_Valve(BTB3734905-20).jpg

1374 ms

Pneumatic_Ball_Valve(BTB2000A-50).jpg

Pneumatic_Ball_Valve(BTB2000A-50).jpg

1345 ms

Three_Way_Pneumatic_Ball_Valve(BTB2003A-50).jpg

Three_Way_Pneumatic_Ball_Valve(BTB2003A-50).jpg

1347 ms

Two-way_Water_Solenoid_Valve(BTB2W-25).jpg

Two-way_Water_Solenoid_Valve(BTB2W-25).jpg

1468 ms

index_04.jpg

index_04.jpg

153 ms

index_07.jpg

index_07.jpg

65 ms

index_12.jpg

index_12.jpg

75 ms

index_14.jpg

index_14.jpg

131 ms

index_17.jpg

index_17.jpg

208 ms

index_18.jpg

index_18.jpg

146 ms

index_20.jpg

index_20.jpg

146 ms

index_29.jpg

index_29.jpg

140 ms

index_27.jpg

index_27.jpg

211 ms

index_31.jpg

index_31.jpg

205 ms

index_36.jpg

index_36.jpg

321 ms

index_66.jpg

index_66.jpg

242 ms

index2_45.jpg

index2_45.jpg

218 ms

index_41.jpg

index_41.jpg

292 ms

index_43.jpg

index_43.jpg

274 ms

index2_44.jpg

index2_44.jpg

303 ms

index_45.jpg

index_45.jpg

285 ms

index_47.jpg

index_47.jpg

313 ms

index2_55.jpg

index2_55.jpg

354 ms

index2_60.jpg

index2_60.jpg

353 ms

index_56.jpg

index_56.jpg

371 ms

index_64.jpg

index_64.jpg

377 ms

index_59.jpg

index_59.jpg

404 ms

index_61.jpg

index_61.jpg

423 ms

index_73.jpg

index_73.jpg

431 ms

index_80.jpg

index_80.jpg

430 ms

i_lo2.gif

i_lo2.gif

3099 ms

Accessibility Review

btbvalve.com accessibility score

67

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

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

btbvalve.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

btbvalve.com SEO score

83

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 Btbvalve.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 Btbvalve.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

btbvalve.com

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