Tools & Wizards About Us
bosmaoptics.com screenshot

Report Summary

  • 11

    Performance

    Renders faster than
    24% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 66% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 72

    SEO

    Google-friendlier than
    31% of websites

bosmaoptics.com

BOSMA

Page Load Speed

11.2 sec in total

First Response

698 ms

Resources Loaded

8.6 sec

Page Rendered

2 sec

bosmaoptics.com screenshot

About Website

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

BOSMA BOSMA

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Key Findings

We analyzed Bosmaoptics.com page load time and found that the first response time was 698 ms and then it took 10.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

bosmaoptics.com performance score

11

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.2 s

78/100

10%

LCP (Largest Contentful Paint)

Value27.9 s

0/100

25%

SI (Speed Index)

Value12.5 s

3/100

10%

TBT (Total Blocking Time)

Value7,460 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value1.043

2/100

15%

TTI (Time to Interactive)

Value10.3 s

25/100

10%

Network Requests Diagram

bosmaoptics.com

698 ms

www.bosmaoptics.com

1547 ms

reset.css

513 ms

head-foot.css

514 ms

style.css

537 ms

Our browser made a total of 43 requests to load all elements on the main page. We found that 60% of them (26 requests) were addressed to the original Bosmaoptics.com, 40% (17 requests) were made to Www-x-bosmaoptics-x-com.img.addlink.cn. The less responsive or slowest element that took the longest time to load (4.7 sec) relates to the external source Www-x-bosmaoptics-x-com.img.addlink.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 132.8 kB (2%)

Content Size

5.8 MB

After Optimization

5.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Bosmaoptics.com main page is 5.8 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. 30% of websites need less resources to load. Images take 5.8 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 20.5 kB

  • Original 24.1 kB
  • After minification 13.5 kB
  • After compression 3.5 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 10.6 kB, which is 44% 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 20.5 kB or 85% of the original size.

Image Optimization

-2%

Potential reduce by 110.4 kB

  • Original 5.8 MB
  • After minification 5.6 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. BOSMA Optics images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 131 B

  • Original 66.5 kB
  • After minification 66.5 kB
  • After compression 66.3 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

-20%

Potential reduce by 1.7 kB

  • Original 8.3 kB
  • After minification 8.3 kB
  • After compression 6.7 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. Bosmaoptics.com needs all CSS files to be minified and compressed as it can save up to 1.7 kB or 20% of the original size.

Requests Breakdown

Number of requests can be reduced by 3 (13%)

Requests Now

24

After Optimization

21

  • Images
  • JavaScript
  • CSS

The browser has sent 24 CSS, Javascripts, AJAX and image requests in order to completely render the main page of BOSMA Optics. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

bosmaoptics.com

bosmaoptics.com

698 ms

www.bosmaoptics.com

www.bosmaoptics.com

1547 ms

reset.css

reset.css

513 ms

head-foot.css

head-foot.css

514 ms

style.css

style.css

537 ms

jquery.min.js

jquery.min.js

1215 ms

com.js

com.js

528 ms

swiper.min.css

swiper.min.css

406 ms

swiper.min.js

swiper.min.js

1319 ms

logo2.png

logo2.png

219 ms

sousuo.png

sousuo.png

222 ms

BTgYdJXif9fZGlzo21GQ.jpg

BTgYdJXif9fZGlzo21GQ.jpg

221 ms

yCCsx7auxliyfDwd7RTf.jpg

yCCsx7auxliyfDwd7RTf.jpg

223 ms

SpJrqJD0uEHiIdYcj2NC.jpg

SpJrqJD0uEHiIdYcj2NC.jpg

227 ms

close.png

close.png

432 ms

iYNktfBwoTcoKRicTDMb.jpg

iYNktfBwoTcoKRicTDMb.jpg

437 ms

sZGOn4D8d2XNrqMs4U9J.jpg

sZGOn4D8d2XNrqMs4U9J.jpg

438 ms

sYwNS54QpnkRIsGvduWs.jpg

sYwNS54QpnkRIsGvduWs.jpg

443 ms

6KQTTISJnhMAqwVD2mbB.jpg

6KQTTISJnhMAqwVD2mbB.jpg

451 ms

gM7CKmHGr3emABU0qyhx.jpg

gM7CKmHGr3emABU0qyhx.jpg

516 ms

mose.png

mose.png

646 ms

Dsa6qOzLuuhz3wlIT2HA.jpg

Dsa6qOzLuuhz3wlIT2HA.jpg

654 ms

zdarmOY5GiieSezqii2v.jpg

zdarmOY5GiieSezqii2v.jpg

656 ms

EFFfcjKIzwHczXV8hCoZ.jpg

EFFfcjKIzwHczXV8hCoZ.jpg

662 ms

Kp0s2v0HxjWN1UYONL0g.jpg

Kp0s2v0HxjWN1UYONL0g.jpg

674 ms

k90P7IXr2vOf80xfO65t.jpeg

k90P7IXr2vOf80xfO65t.jpeg

730 ms

logo2.png

logo2.png

1481 ms

BTgYdJXif9fZGlzo21GQ.jpg

BTgYdJXif9fZGlzo21GQ.jpg

2229 ms

sousuo.png

sousuo.png

787 ms

yCCsx7auxliyfDwd7RTf.jpg

yCCsx7auxliyfDwd7RTf.jpg

2512 ms

SpJrqJD0uEHiIdYcj2NC.jpg

SpJrqJD0uEHiIdYcj2NC.jpg

2543 ms

close.png

close.png

584 ms

iYNktfBwoTcoKRicTDMb.jpg

iYNktfBwoTcoKRicTDMb.jpg

2538 ms

sZGOn4D8d2XNrqMs4U9J.jpg

sZGOn4D8d2XNrqMs4U9J.jpg

2320 ms

sYwNS54QpnkRIsGvduWs.jpg

sYwNS54QpnkRIsGvduWs.jpg

3153 ms

6KQTTISJnhMAqwVD2mbB.jpg

6KQTTISJnhMAqwVD2mbB.jpg

2487 ms

gM7CKmHGr3emABU0qyhx.jpg

gM7CKmHGr3emABU0qyhx.jpg

2723 ms

mose.png

mose.png

2363 ms

Dsa6qOzLuuhz3wlIT2HA.jpg

Dsa6qOzLuuhz3wlIT2HA.jpg

3127 ms

zdarmOY5GiieSezqii2v.jpg

zdarmOY5GiieSezqii2v.jpg

4658 ms

EFFfcjKIzwHczXV8hCoZ.jpg

EFFfcjKIzwHczXV8hCoZ.jpg

3542 ms

Kp0s2v0HxjWN1UYONL0g.jpg

Kp0s2v0HxjWN1UYONL0g.jpg

3584 ms

k90P7IXr2vOf80xfO65t.jpeg

k90P7IXr2vOf80xfO65t.jpeg

2765 ms

Accessibility Review

bosmaoptics.com accessibility score

87

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

bosmaoptics.com best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

bosmaoptics.com SEO score

72

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

Links do not have descriptive text

High

Image elements do not have [alt] attributes

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

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

    EN

  • Language Claimed

    ZH

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Bosmaoptics.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it does not match the claimed Chinese language. Our system also found out that Bosmaoptics.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

bosmaoptics.com

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