Tools & Wizards About Us
crystal-material.com screenshot

Report Summary

  • 80

    Performance

    Renders faster than
    86% of other websites

  • 55

    Accessibility

    Visual factors better than
    that of 23% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 67

    SEO

    Google-friendlier than
    26% of websites

crystal-material.com

Crystal Material supplier,manufacturers from China - Biotain Crystal Co., Ltd.

Page Load Speed

5.4 sec in total

First Response

524 ms

Resources Loaded

4.5 sec

Page Rendered

375 ms

crystal-material.com screenshot

About Website

Welcome to crystal-material.com homepage info - get ready to check Crystal Material best content right away, or after learning these important things about crystal-material.com

Biotain Crystal is a Crystal materials manufacturer/supplier in China for optoelectronics and semiconductors. We are specializing in the production of single crystal substrates, optical windows and se...

Visit crystal-material.com

Key Findings

We analyzed Crystal-material.com page load time and found that the first response time was 524 ms and then it took 4.9 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

crystal-material.com performance score

80

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

36/100

10%

LCP (Largest Contentful Paint)

Value3.4 s

66/100

25%

SI (Speed Index)

Value5.3 s

57/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value3.4 s

93/100

10%

Network Requests Diagram

crystal-material.com

524 ms

www.crystal-material.com

962 ms

style.css

237 ms

21917355.js

976 ms

banner3.jpg

699 ms

Our browser made a total of 56 requests to load all elements on the main page. We found that 98% of them (55 requests) were addressed to the original Crystal-material.com, 2% (1 request) were made to Js.users.51.la. The less responsive or slowest element that took the longest time to load (2.4 sec) belongs to the original domain Crystal-material.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 98.8 kB (6%)

Content Size

1.8 MB

After Optimization

1.7 MB

  • HTML
  • Images
  • CSS

In fact, the total size of Crystal-material.com main page is 1.8 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. 45% of websites need less resources to load. Images take 1.7 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 19.5 kB

  • Original 23.8 kB
  • After minification 22.3 kB
  • After compression 4.3 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 19.5 kB or 82% of the original size.

Image Optimization

-5%

Potential reduce by 78.4 kB

  • Original 1.7 MB
  • After minification 1.7 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. Crystal Material images are well optimized though.

CSS Optimization

-20%

Potential reduce by 850 B

  • Original 4.3 kB
  • After minification 4.3 kB
  • After compression 3.5 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. Crystal-material.com needs all CSS files to be minified and compressed as it can save up to 850 B or 20% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

54

After Optimization

54

  • Images
  • JavaScript
  • CSS

The browser has sent 54 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Crystal Material. According to our analytics all requests are already optimized.

Network Requests Diagram

crystal-material.com

crystal-material.com

524 ms

www.crystal-material.com

www.crystal-material.com

962 ms

style.css

style.css

237 ms

21917355.js

21917355.js

976 ms

banner3.jpg

banner3.jpg

699 ms

1-141026125SU32.jpg

1-141026125SU32.jpg

700 ms

1-141026124424135.jpg

1-141026124424135.jpg

711 ms

1-141026123254310.jpg

1-141026123254310.jpg

712 ms

1-1Z104221249606.jpg

1-1Z104221249606.jpg

958 ms

1-1Z324225912344.png

1-1Z324225912344.png

1753 ms

1-1PR11K429134.jpg

1-1PR11K429134.jpg

937 ms

1-141026123S5V4.jpg

1-141026123S5V4.jpg

938 ms

1-14102611224X44.jpg

1-14102611224X44.jpg

946 ms

1-1410261250393D.jpg

1-1410261250393D.jpg

948 ms

1-14102612550N54.jpg

1-14102612550N54.jpg

1172 ms

1-1410261220114S.jpg

1-1410261220114S.jpg

1402 ms

1-1PQ91J31cT.jpg

1-1PQ91J31cT.jpg

1417 ms

1-200112200111595.jpg

1-200112200111595.jpg

1194 ms

1-2001051Q6320-L.jpg

1-2001051Q6320-L.jpg

1197 ms

1-200111211614203.jpg

1-200111211614203.jpg

1406 ms

1-2001122023260-L.jpg

1-2001122023260-L.jpg

1433 ms

1-2001112156150-L.jpg

1-2001112156150-L.jpg

1439 ms

1-2001062113160-L.jpg

1-2001062113160-L.jpg

1866 ms

1-2001052235050-L.jpg

1-2001052235050-L.jpg

1640 ms

1-200112121I1S4.jpg

1-200112121I1S4.jpg

1658 ms

1-2002161931554Y.jpg

1-2002161931554Y.jpg

1672 ms

1-200216192123600.jpg

1-200216192123600.jpg

1682 ms

1-200216192929613.jpg

1-200216192929613.jpg

1883 ms

1-200112220505560.jpg

1-200112220505560.jpg

1894 ms

1-1Q00QJ4030-L.jpg

1-1Q00QJ4030-L.jpg

2145 ms

1-1Q00QPQ20-L.jpg

1-1Q00QPQ20-L.jpg

1923 ms

1-1Q00Q649240-L.jpg

1-1Q00Q649240-L.jpg

2004 ms

1-1Q00QSR80-L.jpg

1-1Q00QSR80-L.jpg

2103 ms

1-131021164501c8.jpg

1-131021164501c8.jpg

2116 ms

1-1310211F105919.jpg

1-1310211F105919.jpg

2130 ms

1-1310211604113b.jpg

1-1310211604113b.jpg

2163 ms

1-1Q1241FG6146.jpg

1-1Q1241FG6146.jpg

2255 ms

1-131021161953223.jpg

1-131021161953223.jpg

2337 ms

1-1310211AT2414.jpg

1-1310211AT2414.jpg

2350 ms

1-131021163609545.jpg

1-131021163609545.jpg

2133 ms

1-1310211639134X.jpg

1-1310211639134X.jpg

1692 ms

aboutus_pic.jpg

aboutus_pic.jpg

1714 ms

top_line.jpg

top_line.jpg

1805 ms

tel-ico.gif

tel-ico.gif

1867 ms

email-ico.gif

email-ico.gif

1655 ms

topbg.jpg

topbg.jpg

1672 ms

logo.png

logo.png

1681 ms

search2.jpg

search2.jpg

1704 ms

showbox_bg2.jpg

showbox_bg2.jpg

1809 ms

category_bg.jpg

category_bg.jpg

1639 ms

little-banner7.jpg

little-banner7.jpg

1632 ms

channel_top.gif

channel_top.gif

1649 ms

channel_son.gif

channel_son.gif

1471 ms

contactbox.jpg

contactbox.jpg

1494 ms

little-banner8.jpg

little-banner8.jpg

1601 ms

aboutbox_shadow.jpg

aboutbox_shadow.jpg

1611 ms

Accessibility Review

crystal-material.com accessibility score

55

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

Form elements do not have associated labels

Best Practices

crystal-material.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

SEO Factors

crystal-material.com SEO score

67

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

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 Crystal-material.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 Crystal-material.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

crystal-material.com

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